133 results on '"Ondrasek, Gabrijel"'
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2. Nanobiochar-Coating Regulates N and P Release from DAP Fertilizer in Soil and Improves Maize Crop Productivity
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Shah, Ghulam Abbas, Mustafa, Mughees, Asfour, Hani Z., Shoukat, Khubra, Yasin, Ahsan, Ali, Nadeem, Niazi, Muhammad Bilal Khan, Ondrasek, Gabrijel, and Rashid, Muhammad Imtiaz
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- 2024
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3. Immunomodulating melatonin-decorated silica nanoparticles suppress bacterial wilt (Ralstonia solanacearum) in tomato (Solanum lycopersicum L.) through fine-tuning of oxidative signaling and rhizosphere bacterial community
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Ijaz, Munazza, Lv, Luqiong, Ahmed, Temoor, Noman, Muhammad, Manan, Abdul, Ijaz, Rafia, Hafeez, Rahila, Shahid, Muhammad Shafiq, Wang, Daoze, Ondrasek, Gabrijel, and Li, Bin
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- 2024
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4. Regulatory mechanism of C4-dicarboxylates in cyclo (Phe-Pro) production
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Xu, Xinyan, Liu, Liu, Xu, Lihui, Zhang, Yang, Hafeez, Rahila, Ijaz, Munazza, Ali, Hayssam M., Shahid, Muhammad Shafiq, Ahmed, Temoor, Ondrasek, Gabrijel, and Li, Bin
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- 2024
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5. Fly ash application impacts master physicochemical pedovariables: A multilevel meta-analysis
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Horvatinec, Jelena, Buczny, Jacek, and Ondrasek, Gabrijel
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- 2024
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6. Humates and Chlorides Synergistically Increase Cd Phytoaccumulation in Strawberry Fruits, Heightening Health Risk from Cd in Human Diet
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Ondrasek, Gabrijel, Jelovica Badovinac, Ivana, Peter, Robert, Petravić, Mladen, Macan, Jelena, and Rengel, Zed
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- 2022
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7. Humates mitigate Cd uptake in the absence of NaCl salinity, but combined application of humates and NaCl enhances Cd mobility & phyto-accumulation
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Ondrasek, Gabrijel, Romić, Davor, Tanaskovik, Vjekoslav, Savić, Radovan, Rathod, Santosha, Horvatinec, Jelena, and Rengel, Zed
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- 2022
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8. Modeling seasonal soil moisture dynamics in gley soils in relation to groundwater table oscillations in eastern Croatia
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Krevh, Vedran, Filipović, Vilim, Filipović, Lana, Mateković, Valentina, Petošić, Dragutin, Mustać, Ivan, Ondrašek, Gabrijel, Bogunović, Igor, Kovač, Zoran, Pereira, Paulo, Sasidharan, Salini, He, Hailong, Groh, Jannis, Stumpp, Christine, and Brunetti, Giuseppe
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- 2022
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9. Role of hypothetical protein PA1-LRP in antibacterial activity of endolysin from a new Pantoea phage PA1.
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Tian, Ye, Xu, Xinyan, Ijaz, Munazza, Shen, Ying, Shahid, Muhammad Shafiq, Ahmed, Temoor, Ali, Hayssam M., Yan, Chengqi, Gu, Chunyan, Lu, Jianfei, Wang, Yanli, Ondrasek, Gabrijel, and Li, Bin
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TRANSMEMBRANE domains ,PHYTOPATHOGENIC microorganisms ,LYSIS ,BACTERIAL diseases ,GRAM-negative bacteria - Abstract
Introduction: Pantoea ananatis has emerged as a significant plant pathogen affecting various crops worldwide, causing substantial economic losses. Bacteriophages and their endolysins offer promising alternatives for controlling bacterial infections, addressing the growing concerns of antibiotic resistance. Methods: This study isolated and characterized the Pantoea phage PA1 and investigated the role of PA1-LRP in directly damaging bacteria and assisting endolysin PA1-Lys in cell lysis, comparing its effect to exogenous transmembrane domains following the identification and analysis of the PA1-Lys and the PA1-LRP based on whole genome analysis of phage PA1. Additionally, this study also explored how hydrophobic region of PA1-LRP (HPP) contributes to bacterial killing when combined with PA1-Lys and examined the stability and lytic spectrum of PA1-Lys under various conditions. Results and discussion: Phage PA1 belonging to the Chaseviridae family exhibited a broad host range against P. ananatis strains, with a latent period of 40 minutes and a burst size of 17.17 phages per infected cell. PA1-Lys remained stable at pH 6-10 and temperatures of 20-50°C and showed lytic activity against various Gram-negative bacteria, while PA1-Lys alone could not directly lyse bacteria, its lytic activity was enhanced in the presence of EDTA. Surprisingly, PA1-LRP inhibited bacterial growth when expressed alone. After 24 h of incubation, the OD
600 value of pET28a-LRP decreased by 0.164 compared to pET28a. Furthermore, the lytic effect of co-expressed PA1-LRP and PA1-Lys was significantly stronger than each separately. After 24 h of incubation, compared to pET28a-LRP, the OD600 value of pET28a-Lys-LRP decreased by 0.444, while the OD420 value increased by 3.121. Live/dead cell staining, and flow cytometry experiments showed that the fusion expression of PA1-LRP and PA1-Lys resulted in 41.29% cell death, with bacterial morphology changing from rod-shaped to filamentous. Notably, PA1-LRP provided stronger support for endolysin-mediated cell lysis than exogenous transmembrane domains. Additionally, our results demonstrated that the HPP fused with PA1-Lys, led to 40.60% cell death, with bacteria changing from rod-shaped to spherical and exhibiting vacuolation. Taken together, this study provides insights into the lysis mechanisms of Pantoea phages and identifies a novel lysis-related protein, PA1-LRP, which could have potential applications in phage therapy and bacterial disease control. [ABSTRACT FROM AUTHOR]- Published
- 2024
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10. Advancements in Bacteriophages for the Fire Blight Pathogen Erwinia amylovora.
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Ke, Dufang, Luo, Jinyan, Liu, Pengfei, Shou, Linfei, Ijaz, Munazza, Ahmed, Temoor, Shahid, Muhammad Shafiq, An, Qianli, Mustać, Ivan, Ondrasek, Gabrijel, Wang, Yanli, Li, Bin, and Lou, Binggan
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PHYTOPATHOGENIC microorganisms ,ERWINIA amylovora ,COPPER compounds ,PLANT diseases ,DRUG resistance in bacteria ,ERWINIA - Abstract
Erwinia amylovora, the causative agent of fire blight, causes significant economic losses for farmers worldwide by inflicting severe damage to the production and quality of plants in the Rosaceae family. Historically, fire blight control has primarily relied on the application of copper compounds and antibiotics, such as streptomycin. However, the emergence of antibiotic-resistant strains and growing environmental concerns have highlighted the need for alternative control methods. Recently, there has been a growing interest in adopting bacteriophages (phages) as a biological control strategy. Phages have demonstrated efficacy against the bacterial plant pathogen E. amylovora, including strains that have developed antibiotic resistance. The advantages of phage therapy includes its minimal impact on microbial community equilibrium, the lack of a detrimental impact on plants and beneficial microorganisms, and its capacity to eradicate drug-resistant bacteria. This review addresses recent advances in the isolation and characterization of E. amylovora phages, including their morphology, host range, lysis exertion, genomic characterization, and lysis mechanisms. Furthermore, this review evaluates the environmental tolerance of E. amylovora phages. Despite their potential, E. amylovora phages face certain challenges in practical applications, including stability issues and the risk of lysogenic conversion. This comprehensive review examines the latest developments in the application of phages for controlling fire blight and highlights the potential of E. amylovora phages in plant protection strategies. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Spectral Intelligence: AI-Driven Hyperspectral Imaging for Agricultural and Ecosystem Applications.
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Ali, Faizan, Razzaq, Ali, Tariq, Waheed, Hameed, Akhtar, Rehman, Abdul, Razzaq, Khizar, Sarfraz, Sohaib, Rajput, Nasir Ahmed, Zaki, Haitham E. M., Shahid, Muhammad Shafiq, and Ondrasek, Gabrijel
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MACHINE learning ,AGRICULTURE ,REMOTE sensing ,PHYTOPATHOGENIC microorganisms ,FARMERS - Abstract
Ensuring global food security amid mounting challenges, such as population growth, disease infestations, resource limitations, and climate change, is a pressing concern. Anticipated increases in food demand add further complexity to this critical issue. Plant pathogens, responsible for substantial crop losses (up to 41%) in major crops like wheat, rice, maize, soybean, and potato, exacerbate the situation. Timely disease detection is crucial, yet current practices often identify diseases at advanced stages, leading to severe infestations. To address this, remote sensing and Hyperspectral imaging (HSI) have emerged as robust and nondestructive techniques, exhibiting promising results in early disease identification. Integrating machine learning algorithms with image data sets enables precise spatial–temporal disease identification, facilitating timely detection, predictive modeling, and effective disease management without compromising fitness or climate adaptability. By harnessing these cutting-edge technologies and data-driven decision-making, growers can optimize input costs while achieving enhanced yields, making significant strides toward global food security in the face of climate change risks. This review will discuss some of the foundational concepts of remote sensing, several platforms used for remote sensing data collection, successful application of the approach, and its future perspective. [ABSTRACT FROM AUTHOR]
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- 2024
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12. Traditional Strategies and Cutting-Edge Technologies Used for Plant Disease Management: A Comprehensive Overview.
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Akhtar, Hira, Usman, Muhammad, Binyamin, Rana, Hameed, Akhtar, Arshad, Sarmad Frogh, Aslam, Hafiz Muhammad Usman, Khan, Imran Ahmad, Abbas, Manzar, Zaki, Haitham E. M., Ondrasek, Gabrijel, and Shahid, Muhammad Shafiq
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PESTICIDE resistance ,PLANT diseases ,SYNTHETIC proteins ,BIOTECHNOLOGY ,DISEASE management - Abstract
Agriculture plays a fundamental role in ensuring global food security, yet plant diseases remain a significant threat to crop production. Traditional methods to manage plant diseases have been extensively used, but they face significant drawbacks, such as environmental pollution, health risks and pathogen resistance. Similarly, biopesticides are eco-friendly, but are limited by their specificity and stability issues. This has led to the exploration of novel biotechnological approaches, such as the development of synthetic proteins, which aim to mitigate these drawbacks by offering more targeted and sustainable solutions. Similarly, recent advances in genome editing techniques—such as meganucleases (MegNs), zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs) and clustered regularly interspaced short palindromic repeats (CRISPR)—are precise approaches in disease management, but are limited by technical challenges and regulatory concerns. In this realm, nanotechnology has emerged as a promising frontier that offers novel solutions for plant disease management. This review examines the role of nanoparticles (NPs), including organic NPs, inorganic NPs, polymeric NPs and carbon NPs, in enhancing disease resistance and improving pesticide delivery, and gives an overview of the current state of nanotechnology in managing plant diseases, including its advantages, practical applications and obstacles that must be overcome to fully harness its potential. By understanding these aspects, we can better appreciate the transformative impact of nanotechnology on modern agriculture and can develop sustainable and effective strategies to mitigate plant diseases, ensuring enhanced agricultural productivity. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Wood biomass fly ash ameliorates acidic, low-nutrient hydromorphic soil & reduces metal accumulation in maize
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Ondrasek, Gabrijel, Zovko, Monika, Kranjčec, Filip, Savić, Radovan, Romić, Davor, and Rengel, Zed
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- 2021
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14. Recent advances in nanoenabled immunomodulation for enhancing plant resilience against phytopathogens.
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Masood, Hafiza Ayesha, Yetong Qi, Zahid, Muhammad Khubaib, Zhitao Li, Ahmad, Salman, Ji-Min Lv, Shahid, Muhammad Shafiq, Ali, Hamada E., Ondrasek, Gabrijel, and Xingjiang Qi
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PLANT diseases ,DISEASE resistance of plants ,NATURAL immunity ,DISEASE management ,IMMUNOREGULATION - Abstract
Plant diseases caused by microbial pathogens pose a severe threat to global food security. Although genetic modifications can improve plant resistance; however, environmentally sustainable strategies are needed to manage plant diseases. Nano-enabled immunomodulation involves using engineered nanomaterials (ENMs) to modulate the innate immune system of plants and enhance their resilience against pathogens. This emerging approach provides unique opportunities through the ability of ENMs to act as nanocarriers for delivering immunomodulatory agents, nanoprobes for monitoring plant immunity, and nanoparticles (NPs) that directly interact with plant cells to trigger immune responses. Recent studies revealed that the application of ENMs as nanoscale agrochemicals can strengthen plant immunity against biotic stress by enhancing systemic resistance pathways, modulating antioxidant defense systems, activating defense-related genetic pathways and reshaping the plantassociated microbiomes. However, key challenges remain in unraveling the complex mechanisms through which ENMs influence plant molecular networks, assessing their long-term environmental impacts, developing biodegradable formulations, and optimizing targeted delivery methods. This review provides a comprehensive investigation of the latest research on nanoenabled immunomodulation strategies, potential mechanisms of action, and highlights future perspectives to overcome existing challenges for sustainable plant disease management. [ABSTRACT FROM AUTHOR]
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- 2024
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15. Centers for optimizing water management in agroecosystems & global food security.
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Ondrasek, Gabrijel and Rengel, Zed
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WATER management ,FOOD security ,LOCAL foods ,AGRICULTURAL ecology ,PUBLIC officers - Abstract
Global food security (GFS) is challenged by increasing food demand due to population growth and climate change. International trade and globalization have underpinned GFS until the most recent public health, geopolitical and economic crises, when virtually overnight, the focus of governments has shifted towards domestically and locally produced foods. However, the agrifood sector has limited flexibility, and relatively long periods are needed for fundamental/sustainable changes. One of the crucial factors enabling GFS is the efficient water management, but the required knowledge and capabilities are often lacking regionally/locally. We propose the Centers for Optimizing Water Management in Agroecosystems as a long-term solution. The Centers would be the specialized hubs for promotion of research, innovation and technology transfer, raising the knowledge of stakeholders (farmers, extension and government officials, scholars, students, policymakers and other professionals) and their capacities in water management. These Centers would operate as research/education/technology demonstration entities tailored to the specifics of a particular country/region, aiming to address the most important and pertinent goals and outcomes with a high-spatial-resolution outreach. Finally, the Centers will improve farmers’ livelihoods, contribute to sustainable and efficient use of agro-environmental resources, and increase productivity and food quality, ultimately supporting GFS. [ABSTRACT FROM AUTHOR]
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- 2024
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16. Bio-based resources: systemic & circular solutions for (agro)environmental services.
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Ondrasek, Gabrijel, Meriño-Gergichevich, Cristian, Manterola-Barroso, Carlos, Seguel Fuentealba, Alex, Romero, Sebastián Meier, Savić, Radovan, Cholin, Sarvamangala S., and Horvatinec, Jelena
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- 2024
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17. Enhancing Quality Fruit Composition in Red Currant Cultivars by Foliar Calcium Application across Preharvest and Postharvest Stages.
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Panfilova, Olga, Kahramanoğlu, Ibrahim, Ondrasek, Gabrijel, Ryago, Nelli, Leonteva, Larisa, Wan, Chunpeng, Tsoy, Mikhail, Okatan, Volkan, Golyaeva, Olga, Loretts, Olga, Kukhar, Viktor, and Karpukhin, Mikhail
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FRUIT composition ,BERRIES ,FRUIT quality ,CULTIVARS ,CALCIUM ,WEATHER - Abstract
Foliar calcium (Ca) treatment exhibits strong potential for enhancing yield and quality in some fruit crops. This study aimed to assess the impact of foliar application of Ca-organomineral (Ca-OM) suspension on total soluble solids (TSS) and Ca dynamics in leaves and berries across five red currant cultivars during the vegetation and storage. A randomized block design with two treatments: (1) Control (without Ca-OM treatment) and (2) foliar Ca-OM treatment, with three repetitions, was applied on five different red currant cultivars. Although foliar Ca-OM treatments did not impact Ca or TSS in leaves, they positively influenced Ca and TSS in fruits, displaying significant variability among cultivars. In addition, Ca-OM treatment increased berry density, reduced abscission, and inhibited the development of diseases, extending storage periods for "Lvovyanka," "Vika," and "Gazel" cultivars by three to seven days compared to the Ca-OM untreated control. Ca-OM treatment in the early stages of the ontogenesis of currants provided a high percentage of Ca intake in berries. At the stage of complete maturation, the Ca content in berries decreased and depended on the ripening period of the cultivars. Before harvesting, Ca-OM increased the strength of berries (Fc) and reduced the shedding of berries in the clusters (Fs). At the vegetation stage, Ca-OM increased TSS in berries, and the content of TSS depended on the genotype and weather conditions. The Ca-OM treatment and low temperatures contributed to preserving berry density, reducing the shedding of berries and PLW, and restraining the development of diseases during storage. In addition, the high content of TSS and Ca in berries against the background of a slow rate of decrease in berry density in the Ca-OM variants ensured an extension of the shelf life of "Lvovyanka," "Vika," and "Gazel" by three to seven days compared to the control untreated with Ca-OM. Clustering analyses identified these cultivars as similar in terms of TSS and calcium content in fruits, emphasizing their common traits. The study underscores the potential of foliar Ca treatment to enhance berry quality during growth and storage, significantly improve storage duration, and fortify resistance against adverse factors, presenting promising opportunities for elevating yield and quality in specific red currant cultivars. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Hazelnut and Walnut Nutshell Features as Emerging Added-Value Byproducts of the Nut Industry: A Review.
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Manterola-Barroso, Carlos, Padilla Contreras, Daniela, Ondrasek, Gabrijel, Horvatinec, Jelena, Gavilán CuiCui, Gabriela, and Meriño-Gergichevich, Cristian
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NUT industry ,SCIENTIFIC literature ,HAZELNUTS ,AGRICULTURAL economics ,WALNUT - Abstract
The hard-shelled seed industry plays an important role in the global agricultural economy. In fact, only considering hazelnut and walnut, the global nut supply is over 5.6 tons. As a result considerable amounts are produced year by year, burnt or discarded as waste, bypassing a potential source of valuable compounds or features. This review deals with the recent scientific literature on their chemical composition as well as functional applications as an approach to sustain the utilization of the main byproduct derived from industry. Indeed, nutshells have received great interest due to their lignin, antioxidant, physical and mechanical features. It was found that these properties vary among cultivars and localities of plantation, influencing physical and structural features. The inconsistencies regarding the above-mentioned properties of nutshells lead to exploring the status of hazelnut and walnut shell applications in sustainable bio-economy chains. In fact, in terms of potential applications, the state of the art links their use to the construction industry and the manufacture of materials, such as resin or plastic composites, particleboards or construction panels, or vital infrastructure and as a filler in cement pavements. However, their current use continues bypassing their great antioxidant potential and their interesting chemical and mechanical features. [ABSTRACT FROM AUTHOR]
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- 2024
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19. Growth Competition between Rice (Oryza sativa) and Barnyardgrass (Echinochloa oryzicola) under Varying Mono-/Mixed Cropping Patterns and Air Temperatures.
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Bir, Md. Shahidul Haque, Ali, Md. Arshad, Aktar, Most Mohshina, Park, Kee Woong, Shahbaz, Muhammad, Chong, Khim Phin, Shahid, Muhammad Shafiq, Panfilova, Olga, and Ondrasek, Gabrijel
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ATMOSPHERIC temperature ,ECHINOCHLOA ,COMPETITION (Biology) ,AGRICULTURAL productivity ,GRAIN yields ,MONOCULTURE agriculture ,CYPERUS ,RICE - Abstract
Increase in the concentration of atmospheric greenhouse gases significantly contributes to global warming, representing a substantial challenge for crop production. The study was conducted to determine the growth competition between rice (Oryza sativa) and barnyardgrass (Echinochloa oryzicola) under (i) different cropping patterns and (ii) elevated air temperatures in phytotrons under field condition, at two plant densities (4 and 16 plants per pot). Rice and barnyardgrass were planted with varying cropping patterns (rice: barnyardgrass mixture proportions); 100:0, 75:25, 50:50, 25:75 and 0:100. Air temperatures were maintained in phytotrons as follows: Ambient–A (Control), A +0.8 °C, A +1.9 °C and A +3.4 °C. Plant attributes such as plant height, number of effective tillers, shoot dry weight and grain yield of rice were recorded in this study in the rice/barnyardgrass mixture proportions in the order of 100:0 > 75:25 > 50:50 > 25:75. The highest rice grain yield (37.7 g/pot) was recorded in the monoculture (100:0 rice/barnyardgrass) under ambient temperature, whereas the lowest rice grain yield (0.3 g/pot) was recorded at the 25:75 rice/barnyardgrass mixture proportion under ambient +3.4 °C. The increase in temperature had a significant impact on growth, number of tillers and shoot dry weight of both rice and barnyardgrass plants and followed the order of ambient +3.4 °C > ambient +1.9 °C > ambient +0.8 °C > ambient. However, higher temperature negatively affected the yield of rice and resulted in a substantial decrease in the grain yield. Barnyardgrass showed the highest plant characteristics when grown alongside rice compared to the growth in monoculture. This indicates that barnyardgrass was highly competitive when grown under interspecific competition compared to an intraspecific competition. In contrast, rice grew better in monoculture than in mixture with barnyardgrass. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Impact of Michelia champaca and Tectona grandis mono-species and their mixed plantation on chemical soil properties in a tropical semi-evergreen forest.
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Raihan, Farzana, Shela, Shirin, Mahabul Alam, Md., Haque, Md Ekramul, Chen, Ting-Wen, Horvatinec, Jelena, and Ondrasek, Gabrijel
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FOREST soils ,SOIL profiles ,MIXED culture (Microbiology) ,TROPICAL forests ,SOIL acidity - Abstract
Understanding the effects of planted forests on soil properties is of great importance to meet increasing demands for wood production and contributing to forest ecosystem services and soil carbon sequestration. However, the influence of mono- and mixed tree plantations on soil chemical properties remains incompletely explained, particularly in tropical semi-evergreen forests. In this study, a monoplantation of Michelia champaca and Tectona grandis, as well as their mixed plantation, were studied on soil variables (pH, SOC, N, P, K) at different depths (0-10, 10-20, and 20-30 cm) in tropical semi-evergreen forest of the Khadimnagar National Park, Bangladesh. All examined pedovariables showed no significant differences among plantation types, notably in the surface soil layer (up to 10 cm). However, significant oscillations were found in the deepest soil layer (20- 30 cm), where M. champaca and mixed-species plantations obtained the lowest SOC (0.55-0.66%) and N (0.05-0.06%) concentrations. In the intermediate soil layer (10-20 cm) K concentrations were the lowest in M. champaca (19.6 mg/kg) and mixed-species plantation (17.6 mg/kg), while T. grandis recorded the highest K concentration (27.4 mg/kg). Additionally, the results indicated an increase in pH with soil depth (from 5.30 in the topsoil to 7.00 in the deepest layer), with T. grandis showing the lowest values across examined soil layers (5.76-5.95) and significantly differing from M. champaca, which exhibited the highest pH over the soil profile (6.29-6.51). Such results suggest the leaching of basic cations (Ca
2+ , Mg2+ , K+ ) over the soil profile due to pronounced monsoon rainfalls. Further research is necessary to fully elucidate underlying mechanisms behind the observed impact of examined plantations on chemical soil variables. Considering other variables such as litter chemical composition and various physical and microbiological soil properties can offer valuable guidelines for enhancing more sustainable management of a tropical semi-evergreen forest, prone to soil acidity and water erosion. [ABSTRACT FROM AUTHOR]- Published
- 2024
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21. Evaluation and Selection of Bromegrass Genotypes under Phosphorus and Water Scarcity towards the Development of Resilient Agriculture Focusing on Efficient Resource Use.
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Meier, Sebastián, de Souza Campos, Pedro M., Morales, Arturo, López-Olivari, Rafael, Ortega-Klose, Fernando, Aponte, Humberto, Cartes, Paula, Khan, Naser, Ondrasek, Gabrijel, Cea, Pamela, Palma-Millanao, Rubén, and Seguel, Alex
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PHOSPHORUS in water ,BROMEGRASSES ,WATER shortages ,RYEGRASSES ,LOLIUM perenne ,WATER efficiency - Abstract
The relationship between phosphorus (P) availability and water restriction was explored in this study, focusing on its impact on phosphorus use efficiency (PUE) and water use efficiency (WUE) in various bromegrass (Bromus spp.) genotypes. Under controlled conditions, five bromegrass genotypes, as well as one ryegrass (Lolium perenne) cultivar, were compared by subjecting them to two P levels and two watering regimes. It was determined that combining water and phosphorus limitations led to reduced plant productivity. Initially, the ryegrass outperformed the bromegrass, but this result declined over time, while bromegrass exhibited consistent stability. Notably, under P and water stress, enhanced root development was observed in bromegrass compared to that in ryegrass. Distinct patterns of PUE and WUE allowed for the categorization of bromegrass genotypes into three groups. Genotype 3457 emerged as the most efficient, scoring 20 out of 24, while Pro 94-49 A achieved a score of only 10 out of 24. This study suggests that the drought resilience of bromegrass may be linked to increased root growth during the early vegetative stages, which potentially facilitates improved P acquisition. However, further validation through long-term field experiments is needed. The insights from this study are potentially valuable for use in shaping plant breeding programs by revealing the plant adaptation mechanisms for both P and water absorption. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Molecular Signature of a Novel Alternanthera Yellow Vein Virus Variant Infecting the Ageratum conyzoides Weed in Oman.
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Shafiq, Muhammad, Ondrasek, Gabrijel, Al-Sadi, Abdullah Mohammed, and Shahid, Muhammad Shafiq
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PHYTOPLASMAS , *WHOLE genome sequencing , *BEGOMOVIRUSES , *BASE pairs , *CROPS , *GENETIC variation - Abstract
Alternanthera yellow vein virus (AlYVV), a monopartite begomovirus, has been identified infecting a diverse range of crops and native plants in Pakistan, India, and China. However, distinctive yellow vein symptoms, characteristic of begomovirus infection, were observed on the Ageratum conyzoides weed in Oman, prompting a thorough genomic characterization in this study. The results unveiled a complete genome sequence of 2745 base pairs and an associated betasatellite spanning 1345 base pairs. In addition, Sequence Demarcation Tool analyses indicated the highest nucleotide identity of 92.8% with a previously reported AlYVV-[IN_abalpur_A_17:LC316182] strain, whereas the betasatellite exhibited a 99.8% nucleotide identity with isolates of tomato leaf curl betasatellite. Thus, our findings propose a novel AlYVV Oman virus (AlYVV-OM) variant, emphasizing the need for additional epidemiological surveillance to understand its prevalence and significance in Oman and the broader region. To effectively manage the spread of AlYVV-OM and minimize its potential harm to (agro)ecosystems, future research should focus on elucidating the genetic diversity of AlYVV-OM and its interactions with other begomoviruses. [ABSTRACT FROM AUTHOR]
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- 2023
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23. Editorial: Integrated nutrients management: an approach for sustainable crop production and food security in changing climates.
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Amanullah, Ondrasek, Gabrijel, and Al-Tawaha, Abdel Rahman
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SUSTAINABILITY ,AGRICULTURAL productivity ,FOOD security ,CLIMATE change ,FOOD crops - Published
- 2023
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24. Comparative Root Transcriptome Profiling and Gene Regulatory Network Analysis between Eastern and Western Carrot (Daucus carota L.) Cultivars Reveals Candidate Genes for Vascular Tissue Patterning.
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Kulkarni, Chaitra C., Cholin, Sarvamangala S., Bajpai, Akhilesh K., Ondrasek, Gabrijel, Mesta, R. K., Rathod, Santosha, and Patil, H. B.
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CARROTS ,GENE regulatory networks ,CULTIVARS ,REGULATOR genes ,TRANSCRIPTOMES ,PLANT-pathogen relationships - Abstract
Carrot (Daucus carota L.) is a highly consumed vegetable rich in carotenoids, known for their potent antioxidant, anti-inflammatory, and immune-protecting properties. While genetic and molecular studies have largely focused on wild and Western carrot cultivars (cvs), little is known about the evolutionary interactions between closely related Eastern and Western cvs. In this study, we conducted comparative transcriptome profiling of root tissues from Eastern (UHSBC-23-1) and Western (UHSBC-100) carrot cv. to better understand differentially expressed genes (DEGs) associated with storage root development and vascular cambium (VC) tissue patterning. Through reference-guided TopHat mapping, we achieved an average mapping rate of 73.87% and identified a total of 3544 DEGs (p < 0.05). Functional annotation and gene ontology classification revealed 97 functional categories, including 33 biological processes, 19 cellular components, 45 metabolic processes, and 26 KEGG pathways. Notably, Eastern cv. exhibited enrichment in cell wall, plant-pathogen interaction, and signal transduction terms, while Western cv. showed dominance in photosynthesis, metabolic process, and carbon metabolism terms. Moreover, constructed gene regulatory network (GRN) for both cvs. obtained orthologs with 1222 VC-responsive genes of Arabidopsis thaliana. In Western cv, GRN revealed VC-responsive gene clusters primarily associated with photosynthetic processes and carbon metabolism. In contrast, Eastern cv. exhibited a higher number of stress-responsive genes, and transcription factors (e.g., MYB15, WRKY46, AP2/ERF TF connected via signaling pathways with NAC036) were identified as master regulators of xylem vessel differentiation and secondary cell wall thickening. By elucidating the comparative transcriptome profiles of Eastern and Western cvs. for the first time, our study provides valuable insights into the differentially expressed genes involved in root development and VC tissue patterning. The identification of key regulatory genes and their roles in these processes represents a significant advancement in our understanding of the evolutionary relations and molecular mechanisms underlying secondary growth of carrot and regulation by vascular cambium. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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25. Fly Bioash Ameliorates Acid Luvisol and Increases Sunflower (Helianthus annuus L.) Yield in Field Conditions without Compromising the Risk of Radioactive Contamination.
- Author
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Ondrasek, Gabrijel, Kranjčec, Filip, Horvatinec, Jelena, Bubalo Kovačić, Marina, Husnjak, Stjepan, Čoga, Lepomir, Babić, Dinko, Rašeta, Davor, Volarić, Nikola, Fulajtar, Emil, Rashid, Muhammad Imtiaz, Včev, Aleksandar, and Petrinec, Branko
- Subjects
- *
RADIOACTIVE contamination , *COMMON sunflower , *SUNFLOWERS , *SUSTAINABILITY , *WOOD chips , *ORGANIC farming , *DECIDUOUS forests , *SUNFLOWER seeds , *RADIOLOGICAL health risk - Abstract
Fly bioash (FBA) as a by-product of biomass-fuelled facilities exhibits alkaline properties and is enriched with phytonutrients, thereby offering the potential to effectively ameliorate acidic and nutrient-deficient soils. However, concerns about health risks due to a potential FBA radioactive contamination are still not well studied, notably under field conditions. This study examined pH changes and concentrations of natural (238U, 232Th, 226Ra, 40K) and anthropogenic (137Cs) radionuclides after application of very alkaline (pH > 12) FBA in: (i) highly acid (pHKCl = 4.1) Luvisol and (ii) sunflower (Helianthus annuus L.) seeds, grown in organic farming and rain-fed conditions. FBA (originated from a modern cogeneration, fuelled on certified deciduous forest wood chips) was applied at increasing doses; 0, 4.5, 8.6, 13, and 17.2 t/ha. After 54 months of application, FBA significantly increased soil pHKCl by up to 1.8 unit and the seed yield by 15%, compared with no amended Control, without compromising soil electrical conductivity (salinity). The activity concentrations (Ac) of all observed radionuclides, measured using high-resolution gamma-ray spectrometry, were not altered under FBA application, neither in the surface (0–30 cm) Luvisol horizon nor in the sunflower seed. Moreover, the Ac of 238U, 232Th, and 137Cs in the seed were below detection limit, whereas the Ac of 40K and 226Ra were lower by up to 2.6 and 61 times, respectively, than their corresponding Ac in the soil treatments. The radiological footprint of FBA exhibited lower Ac for most of the observed radionuclides compared with both (i) Croatian non-arable topsoils (with reductions of 238U 3.6 times, 232Th 1.8 times, 226Ra 1.7 times, and 137Cs 1.5 times) and (ii) widely used mineral N/P/K fertilisers in conventional agroecosystems (with reductions of 238U 12.5 times; 226Ra 1.3 times, and 40K 2.4 times). Our findings provide evidence that the application of FBA as a soil conditioner does not pose radiological health or environmental risks, contributing to more sustainable agri-food production and circular bioeconomy. However, it is essential to conduct further studies to comprehensively investigate the effects of FBA application on soil and crop quality across diverse environmental conditions and extended spatiotemporal scales. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
26. Spatiotemporal Characterization of Drought Magnitude, Severity, and Return Period at Various Time Scales in the Hyderabad Karnataka Region of India.
- Author
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Patil, Rahul, Polisgowdar, Basavaraj Shivanagouda, Rathod, Santosha, Bandumula, Nirmala, Mustac, Ivan, Srinivasa Reddy, Gejjela Venkataravanappa, Wali, Vijaya, Satishkumar, Umapathy, Rao, Satyanarayana, Kumar, Anil, and Ondrasek, Gabrijel
- Subjects
DROUGHT management ,DROUGHTS ,CLIMATE change ,GAMMA distributions ,SUSTAINABLE development ,WATER management ,ECOSYSTEM services - Abstract
Global climate change is anticipated to have a profound impact on drought occurrences, leading to detrimental consequences for the environment, socioeconomic relations, and ecosystem services. In order to evaluate the extent of drought impact, a comprehensive study was conducted in the Hyderabad–Karnataka region, India. Precipitation data from 31 stations spanning a 50-year period (1967–2017) were analyzed using the standardized precipitation index (SPI) based on gamma distribution. The findings reveal that approximately 15% of the assessed years of experienced drought conditions, with a range of influence between 41% and 76% under SPI_3, and between 43% and 72% under SPI_6. Examining the timescale magnitude frequency provided insights into variations in the severity of drought events across different locations and timescales. Notably, the Ballari (−8.77), Chitapur (−8.22), and Aland (−7.40) regions exhibited the most significant magnitudes of drought events for SPI_3 with a 5-year return period. The heightened risk of recurrent droughts in the study area emphasizes the necessity of integrating SPI in decision-making processes, as such integration can markedly contribute to the development of reliable and sustainable long-term water management strategies at regional and national levels. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
27. Land Resources in Organic Agriculture: Trends and Challenges in the Twenty-First Century from Global to Croatian Contexts.
- Author
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Ondrasek, Gabrijel, Horvatinec, Jelena, Kovačić, Marina Bubalo, Reljić, Marko, Vinceković, Marko, Rathod, Santosha, Bandumula, Nirmala, Dharavath, Ramesh, Rashid, Muhammad Imtiaz, Panfilova, Olga, Kodikara, Kodikara Arachchilage Sunanda, Defterdarović, Jasmina, Krevh, Vedran, Filipović, Vilim, Filipović, Lana, Čop, Tajana, and Njavro, Mario
- Subjects
- *
ORGANIC farming , *LAND resource , *GREENHOUSE gases , *TWENTY-first century , *LAND use , *AGRICULTURE - Abstract
Organic agriculture (OA) is a continuously growing global concept that emphasizes the use of sustainable and environmentally-friendly practices. By adopting OA, it is possible to improve ecosystems services, increase biodiversity, decrease environmental pollution, reduce carbon footprints and mitigate greenhouse gas emissions, generating food that is free from harmful residues of agrochemicals, thereby enhancing food safety and security. This study provides a comprehensive review of the latest insights on the global utilization of land resources in OA, focusing particularly on some EU countries that experienced a notable and rapid progress in organic farming during the past two decades. With negligible 1.6% (75 Mha) of global cropland is currently dedicated to OA, there is ample opportunity to expand the adoption of OA and realize its multi-beneficial potential for farmers (by premium prices), and consumers (by healthier and nutritious food). The importance of OA has been recognized by the most recent EU agro-environmental policies and green strategies, with an ambitious goal to have at least 25% of agroecosystems under organic management by 2030. Despite numerous financial supports and a multifold increase in OA land area, many member states are unlikely to achieve this goal, including Croatia, which currently has a share of only 8% (~109,000 ha) of lands in OA. Furthermore, converting conventional land to organic farming has not always led to an increase in value-added final OA products. EU policies related to OA have been focused on the area of land cultivated organically, rather than overall production performance, and financial subsidies have been essential to achieve this policy. Therefore, some of critical obstacles and challenges for OA under rising pressures due to global climate change, public health and geopolitical crises need to be managed by specifically designed policies and regulations, which would contribute to more sustainable OA, i.e., food safety and security. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
28. Proficient Lignocellulolytic Novel Bacterial Isolates from Diversified Galiyat Forests of Lower Himalaya.
- Author
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Awan, Malik Owais Ullah, Iqbal, Akhtar, Rashid, Muhammad Imtiaz, Irshad, Usman, Hafeez, Farhan, Ullah, Farid, Irshad, Muhammad, Ondrasek, Gabrijel, Mustac, Ivan, and Nazir, Rashid
- Subjects
XYLANASES ,LIGNOCELLULOSE ,RENEWABLE energy sources ,MICROORGANISM populations ,WASTE management ,FOSSIL fuels ,LACCASE - Abstract
Lignocellulosic biomass needs attention as an alternative energy source to overcome the adverse impacts of fossil fuels. Diversified Galiyat forests of Lower Himalaya may represent the potential source of lignocellulose degrading microbiota, particularly the lytic bacteria. Therefore, soil and wood samples were collected from different sites of Nathiagali and Thandiani of Galiyat forests. The soil samples collected were clayey, with a pH between 6.7 and 7.0, and with an organic matter of 2.8%–2.9% in Nathiagali and 2.1%–2.2% in Thandiani. The soils were enriched with more diversified cultivable bacteria (9 Log CFU/g) than the respective wood samples (7.4–8.6 Log CFU/g). Out of 90 bacteria, 22 isolates were efficient for cellulose degradation, 14 for xylanase activity, and 10 for laccase production. Cluster analysis showed that lignocellulolytic bacteria were grouped based on the sample medium (soil–wood) rather than the sampling site (Thandiani–Nathiagali). Efficient bacteria were also sequenced, and we found that cellulase production was prevalent in Pseudomonas spp. while laccase activity was diverse among taxonomically varied bacteria. Moreover, Stenotrophomonas sp. TS2B1 performed the best for corncob xylose degradation. Overall, the results suggest that Galiyat forests represent diverse lignocellulolytic microbial populations which should be further evaluated for applications in lignocellulosic waste management and for potential consequent fuel production. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
29. Spatial distribution and temporal variation of chemical properties of drainage watercourses in rural and peri-urban areas of Novi Sad (Serbia)—a case study
- Author
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Savic, Radovan, Ondrasek, Gabrijel, Blagojevic, Bosko, Bubalo Kovacic, Marina, and Zemunac, Rados
- Published
- 2017
- Full Text
- View/download PDF
30. Nanobiochar Associated Ammonia Emission Mitigation and Toxicity to Soil Microbial Biomass and Corn Nutrient Uptake from Farmyard Manure.
- Author
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Rashid, Muhammad Imtiaz, Shah, Ghulam Abbas, Iqbal, Zahid, Ramzan, Muhammad, Rehan, Mohammad, Ali, Nadeem, Shahzad, Khurram, Summan, Ahmad, Ismail, Iqbal M. I., and Ondrasek, Gabrijel
- Subjects
FARM manure ,NUTRIENT uptake ,SOILS ,BIOMASS ,CORN - Abstract
The unique properties of NB, such as its nano-size effect and greater adsorption capacity, have the potential to mitigate ammonia (NH
3 ) emission, but may also pose threats to soil life and their associated processes, which are not well understood. We studied the influence of different NB concentrations on NH3 emission, soil microbial biomass, nutrient mineralization, and corn nutrient uptake from farmyard manure (FM). Three different NB concentrations i.e., 12.5 (NB1), 25 (NB2), and 50% (NB3), alone and in a fertilizer mixture with FM, were applied to corn. NB1 alone increased microbial biomass in soil more than control, but other high NB concentrations did not influence these parameters. In fertilizer mixtures, NB2 and NB3 decreased NH3 emission by 25% and 38%, respectively, compared with FM alone. Additionally, NB3 significantly decreased microbial biomass carbon, N, and soil potassium by 34%, 36%, and 14%, respectively, compared with FM. This toxicity to soil parameters resulted in a 21% decrease in corn K uptake from FM. Hence, a high NB concentration causes toxicity to soil microbes, nutrient mineralization, and crop nutrient uptake from the FM. Therefore, this concentration-dependent toxicity of NB to soil microbes and their associated processes should be considered before endorsing NB use in agroecosystems. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
31. Nanobiochar and Copper Oxide Nanoparticles Mixture Synergistically Increases Soil Nutrient Availability and Improves Wheat Production.
- Author
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Rashid, Muhammad Imtiaz, Shah, Ghulam Abbas, Sadiq, Maqsood, Amin, Noor ul, Ali, Arshid Mahmood, Ondrasek, Gabrijel, and Shahzad, Khurram
- Subjects
COPPER oxide ,LOAM soils ,WHEAT ,CLAY soils ,COPPER ,CROP management ,CROP quality - Abstract
Recently, nanomaterials have received considerable attention in the agricultural sector, due to their distinctive characteristics such as small size, high surface area to volume ratio, and charged surface. These properties allow nanomaterials to be utilized as nanofertilizers, that can improve crop nutrient management and reduce environmental nutrient losses. However, after soil application, metallic nanoparticles have been shown to be toxic to soil biota and their associated ecosystem services. The organic nature of nanobiochar (nanoB) may help to overcome this toxicity while maintaining all the beneficial effects of nanomaterials. We aimed to synthesize nanoB from goat manure and utilize it with CuO nanoparticles (nanoCu) to influence soil microbes, nutrient content, and wheat productivity. An X-ray diffractogram (XRD) confirmed nanoB synthesis (crystal size = 20 nm). The XRD spectrum showed a distinct carbon peak at 2θ = 42.9°. Fourier-transform spectroscopy of nanoB's surface indicated the presence of C=O, C≡N–R, and C=C bonds, and other functional groups. The electron microscopic micrographs of nanoB showed cubical, pentagonal, needle, and spherical shapes. NanoB and nanoCu were applied alone and as a mixture at the rate of 1000 mg kg
−1 soil, to pots where wheat crop was grown. NanoCu did not influence any soil or plant parameters except soil Cu content and plant Cu uptake. The soil and wheat Cu content in the nanoCu treatment were 146 and 91% higher, respectively, than in the control. NanoB increased microbial biomass N, mineral N, and plant available P by 57, 28, and 64%, respectively, compared to the control. The mixture of nanoB and nanoCu further increased these parameters, by 61, 18, and 38%, compared to nanoB or nanoCu alone. Consequently, wheat biological, grain yields, and N uptake were 35, 62 and 80% higher in the nanoB+nanoCu treatment compared to the control. NanoB further increased wheat Cu uptake by 37% in the nanoB+nanoCu treatment compared to the nanoCu alone. Hence, nanoB alone, or in a mixture with nanoCu, enhanced soil microbial activity, nutrient content, and wheat production. NanoB also increased wheat Cu uptake when mixed with nanoCu, a micronutrient essential for seed and chlorophyll production. Therefore, a mixture of nanobiochar and nanoCu would be recommended to farmers for improving their clayey loam soil quality and increasing Cu uptake and crop productivity in such agroecosystems. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
32. Cadmium speciation assessment in salinised environmental conditions
- Author
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Ondrasek Gabrijel, Romić Davor, Savić Radovan, and Tanaskovik Vjekoslav
- Subjects
rhizosphere salinity ,trace elements ,geochemical modelling ,Agriculture (General) ,S1-972 - Abstract
Increased topsoil salinity and trace elements content due to inappropriate land management practices (fertigation, soil amendments application) represent some of the most widespread threats to food safety and security in modern agriculture. Phytodeposition, as the most important entry pathway for biotoxic and nonessential trace element cadmium (Cd) into the human foodstuffs, corresponds positively to rhizosphere salinity. By using computational chemical speciation approach (Visual MINTEQ), the biogeochemistry of Cd-contaminated (1µM) solution was evaluated in terms of different levels (low-high) of some of the most abundant naturally-occurring salt minerals (Na + 15-150, Cl -12-90 and SO 4 2-1.5-30 mM) in a wide pH (3.5-9.5) range and low presence of dissolved organic carbon (1 mg Doc/L). According to the modelling results, the concentration of free Cd 2+ predominated in most of pH ranges tested under low salinity, whereas concentrations of Cd-Cl-and Cd-SO4-complexed pool prevailed in medium to high salinity environments . The NICA-Donnan modelling confirmed the importance of Cd-organic complexes only under higher pH values (>8.0) and low salinity conditions. These results confirm that as a consequence of diminished dissolved organic pool due to excessive salinity (e.g. naturally salt-affected soils, water used in irrigated agriculture) Cd biogeochemistry in the rhizosphere can be affected in a way that would enhance Cd mobility and thus phytoextraction by irrigated food crops.
- Published
- 2012
- Full Text
- View/download PDF
33. ACCUMULATION OF NON/ESSENTIAL ELEMENTS IN RADISH PLANTS GROWN IN SALT-AFFECTED AND CADMIUM-CONTAMINATED ENVIRONMENT
- Author
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ONDRASEK, Gabrijel, RENGEL, Zed, ROMIC, Davor, POLJAK, Milan, and ROMIC, Marija
- Published
- 2009
34. NITROGEN, VARIETY AND GROWING SEASON EFFECTS ON GRAIN YIELD AND PROTEIN CONTENT IN WINTER WHEAT
- Author
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PLAVSIC, Hrvoje, JOSIPOVIC, Marko, ONDRASEK, Gabrijel, SOSTARIC, Jasna, and DUVNJAK, Vinko
- Published
- 2008
35. WATER CONSUMPTION AND MACRONUTRIENTS LEACHING IN TOMATO SUBSTRATE GROWING
- Author
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ONDRASEK, Gabrijel, ROMIC, Davor, BOROSIC, Josip, HERAK-CUSTIC, Mirjana, and ROMIC, Marija
- Published
- 2008
36. Accumulation of Heavy Metal Ions from Urban Soil in Spontaneous Flora.
- Author
-
Harja, Maria, Ciocinta, Ramona Carla, Ondrasek, Gabrijel, Bucur, Daniel, and Dirja, Marcel
- Subjects
HEAVY metals ,PRIMROSES ,METAL ions ,URBAN soils ,BRASSICA juncea ,COPPER ,BOTANY ,INDUSTRIAL pollution - Abstract
This study aimed to analyse the bioaccumulation of heavy metal ions in plants of spontaneous flora. An urban area was established from which soil samples were taken and analyses were performed on the content of heavy metal ions. The soil samples were collected from Iasi's urban area to determine the heavy metal concentrations, obtain maps of sensitive land, and determine the content of heavy metals in spontaneous flora and transfer these into an aqueous extract. The investigation of heavy metal ion levels in certain plants revealed the following: (i) all plants from the Brassicaceae accumulate heavy metals, and B. juncea has a great ability to accumulate and transfer Cu, Cr(VI), Cd, Ni, Pb, and Zn towards the shoots; (ii) heavy metals (Fe, Cu, Cr, Mn, Zn) were present in variable concentrations, with mint and nettle being notable for their increased level of iron and thyme, and rattle for its zinc levels; (iii) toxic metals (Pb, Cd, Ni) are present in low concentrations in plants as well as in infusions, except for in primula and plantain, which do not have high levels of Pb and Cd. The results showed that values exceeded the maximum recommended values in areas with industrial pollution. Taking into account the potential for the bioaccumulation of heavy metal ions by plants from spontaneous flora and their use as medicinal plants, it is recommended, based on the studies conducted, to harvest and use plants from soils that do not contain heavy metal ions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
37. Biotechnology Advances in Bioremediation of Arsenic: A Review.
- Author
-
Preetha, Jaganathan Sakthi Yazhini, Arun, Muthukrishnan, Vidya, Nandakumar, Kowsalya, Kumaresan, Halka, Jayachandran, and Ondrasek, Gabrijel
- Subjects
ARSENIC ,MICROBIAL remediation ,BIOREMEDIATION ,CRUST of the earth ,WASTE management ,BIOTECHNOLOGY - Abstract
Arsenic is a highly toxic metalloid widespread in the Earth's crust, and its contamination due to different anthropogenic activities (application of agrochemicals, mining, waste management) represents an emerging environmental issue. Therefore, different sustainable and effective remediation methods and approaches are needed to prevent and protect humans and other organisms from detrimental arsenic exposure. Among numerous arsenic remediation methods, those supported by using microbes as sorbents (microbial remediation), and/or plants as green factories (phytoremediation) are considered as cost-effective and environmentally-friendly bioremediation. In addition, recent advances in genetic modifications and biotechnology have been used to develop (i) more efficient transgenic microbes and plants that can (hyper)accumulate or detoxify arsenic, and (ii) novel organo-mineral materials for more efficient arsenic remediation. In this review, the most recent insights from arsenic bio-/phytoremediation are presented, and the most relevant physiological and molecular mechanisms involved in arsenic biological routes, which can be useful starting points in the creation of more arsenic-tolerant microbes and plants, as well as their symbiotic associations are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. Advanced Continuous Monitoring System—Tools for Water Resource Management and Decision Support System in Salt Affected Delta.
- Author
-
Reljić, Marko, Romić, Marija, Romić, Davor, Gilja, Gordon, Mornar, Vedran, Ondrasek, Gabrijel, Bubalo Kovačić, Marina, and Zovko, Monika
- Subjects
WATER management ,SALTWATER encroachment ,WATER quality monitoring ,DECISION support systems ,WEB portals ,WATER quality ,SOIL weathering - Abstract
The greatest environmental problem facing the world today is climate change, with a rise in sea level being one of the most important consequences, especially in low-lying coastal areas, such as river deltas where changes are exacerbated by human impacts, leading to increased seawater intrusion into coastal aquifers and the degradation of water quality. Water quality monitoring systems are being developed and deployed to monitor changes in the aquatic environment. With technological progress, traditional sampling-based water monitoring has been supplemented with sensors and automated data acquisition and transmission devices, resulting in the automation of water quality monitoring systems. This paper reviews the recent development and application of automated continuous water quality monitoring systems. It also draws on the results of our own experience in implementing such a system in the Neretva River Delta on the Croatian Adriatic coast. The installed system provides (near) real-time data on parameters such as temperature, pH, EC, TDS, and DO in the water, as well as a number of soil and weather variables, with data available at a high frequency through a developed database and web portal for various stakeholders. Continuous monitoring enables the collection of big data that can be used to develop models for predictions of water quality parameters and to develop guidelines for future management. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. Soil Treatment with Nitric Oxide-Releasing Chitosan Nanoparticles Protects the Root System and Promotes the Growth of Soybean Plants under Copper Stress.
- Author
-
Gomes, Diego G., Debiasi, Tatiane V., Pelegrino, Milena T., Pereira, Rodrigo M., Ondrasek, Gabrijel, Batista, Bruno L., Seabra, Amedea B., and Oliveira, Halley C.
- Subjects
PLANT growth ,CHITOSAN ,SOYBEAN ,PLANT protection ,NANOPARTICLES - Abstract
The nanoencapsulation of nitric oxide (NO) donors is an attractive technique to protect these molecules from rapid degradation, expanding, and enabling their use in agriculture. Here, we evaluated the effect of the soil application of chitosan nanoparticles containing S-nitroso-MSA (a S-nitrosothiol) on the protection of soybeans (Glycine max cv. BRS 257) against copper (Cu) stress. Soybeans were grown in a greenhouse in soil supplemented with 164 and 244 mg kg
−1 Cu and treated with a free or nanoencapsulated NO donor at 1 mM, as well as with nanoparticles without NO. There were also soybean plants treated with distilled water and maintained in soil without Cu addition (control), and with Cu addition (water). The exogenous application of the nanoencapsulated and free S-nitroso-MSA improved the growth and promoted the maintenance of the photosynthetic activity in Cu-stressed plants. However, only the nanoencapsulated S-nitroso-MSA increased the bioavailability of NO in the roots, providing a more significant induction of the antioxidant activity, the attenuation of oxidative damage, and a greater capacity to mitigate the root nutritional imbalance triggered by Cu stress. The results suggest that the nanoencapsulation of the NO donors enables a more efficient delivery of NO for the protection of soybean plants under Cu stress. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
40. What If the World Went Vegan? A Review of the Impact on Natural Resources, Climate Change, and Economies.
- Author
-
Dorgbetor, Isaac Korku, Ondrasek, Gabrijel, Kutnjak, Hrvoje, and Mikuš, Ornella
- Subjects
NATURAL resources ,VEGANISM ,CROP residues ,AGRICULTURAL wastes ,GREENHOUSE gases ,FOOD preferences ,COVID-19 ,CLIMATE change - Abstract
Contemporary knowledge on climate change has given rise to a group of advocates who suggest global veganism as an adaptive means of mitigating the threat of climate change. Livestock farming is accused of contributing massively to greenhouse gas (GHG) emissions. Some studies suggest that eliminating meat from the diet (i.e., moving to a vegan diet) can reduce GHG emissions globally, while other studies suggest that livestock farming may make a smaller contribution to GHG emissions compared to previous estimates. A paradigm shift in agricultural production is expected to have direct impacts on natural resources, biodiversity, and economies. However, crop-only production and an exclusively vegan diet may lead to the loss of important plant and animal genetic materials, increase pressure on land and water resources, and exacerbate problems with agricultural crop residues. This "all in one basket" approach may affect the global meat trade, change the dynamics of some economies, and threaten food security in the event of pest and disease pandemics. This review found that crop-based ideology would make a huge contribution to reducing GHG emissions, while the integrity of land and water resources could be threatened in the future. Agricultural policies need to develop appropriate instruments to ensure food security, consumer preferences, and environmental protection and to provide a fair income for farmers worldwide. Global stakeholders in the agri-food sector, from policy makers to farmers, need to be engaged in a coherent policy to reduce the C footprint in our diets, protecting the (agri)environment and securing incomes. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
41. Development and Characterization of a Novel Soil Amendment Based on Biomass Fly Ash Encapsulated in Calcium Alginate Microspheres.
- Author
-
Vinceković, Marko, Šegota, Suzana, Jurić, Slaven, Harja, Maria, and Ondrasek, Gabrijel
- Subjects
FLY ash ,CALCIUM alginate ,BIOMASS ,HYDROGEN bonding interactions ,MICROSPHERES ,SOIL amendments ,SOILS - Abstract
Biomass fly ash (BFA) from a biomass cogeneration plant was encapsulated into calcium alginate microspheres (ALG/Ca) and characterized. An FTIR analysis indicated that BFA loading weakened molecular interactions between ALG/Ca constituents (mainly hydrogen bonding and electrostatic interactions), thus changing the crosslinking density. SEM and AFM analyses revealed a wrinkled and rough surface with elongated and distorted granules. The in vitro release of BFA's main components (K, Ca, and Mg) was controlled by diffusion through the gel-like matrix, but the kinetics and released amounts differed significantly. The smaller released amounts and slower release rates of Ca and Mg compared to K resulted from the differences in the solubility of their minerals as well as from the interactions of divalent cations with alginate chains. The physicochemical properties of the novel microsphere formulation reveal significant potential for the prolonged delivery of nutrients to crops in a safe manner. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
42. Modeling and Forecasting of Rice Prices in India during the COVID-19 Lockdown Using Machine Learning Approaches.
- Author
-
Rathod, Santosha, Chitikela, Gayatri, Bandumula, Nirmala, Ondrasek, Gabrijel, Ravichandran, Sundaram, and Sundaram, Raman Meenakshi
- Subjects
PRICES ,ARTIFICIAL neural networks ,COVID-19 ,BOX-Jenkins forecasting ,STAY-at-home orders ,FORECASTING - Abstract
Via national lockdowns, the COVID-19 pandemic disrupted the production and distribution of foodstuffs worldwide, including rice (Oryza sativa L.) production, affecting the prices in India's agroecosystems and markets. The present study was performed to assess the impact of the COVID-19 national lockdown on rice prices in India, and to develop statistical machine learning models to forecast price changes under similar crisis scenarios. To estimate the rice prices under COVID-19, the general time series models, such as the autoregressive integrated moving average (ARIMA) model, the artificial neural network (ANN) model, and the extreme learning machine (ELM) model, were applied. The results obtained using the ARIMA intervention model revealed that during the COVID-19 lockdown in India, rice prices increased by INR 0.92/kg. In addition, the ELM intervention model was faster, with less computation time, and provided better results vs other models because it detects the nonlinear pattern in time series data, along with the intervention variable, which was considered an exogenous variable. The use of forecasting models can be a useful tool in supporting decision makers, especially under unpredictable crises. The study results are of great importance for the national agri-food sector, as they can bolster authorities and policymakers in planning and designing more sustainable interventions in the food market during (inter)national crisis situations. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
43. An Economic Evaluation of Improved Rice Production Technology in Telangana State, India.
- Author
-
Bandumula, Nirmala, Rathod, Santosha, Ondrasek, Gabrijel, Pillai, Muthuraman Pitchiah, and Sundaram, Raman Meenakshi
- Subjects
RICE ,BIOFORTIFICATION ,FOOD security ,ECONOMIC impact ,NUTRITION ,CASTE ,RESEARCH institutes - Abstract
The demonstrations on improved rice production technology were organized in the Wanaparthy, Nagarkurnool, Yadadri Bhuvanagiri, and Rangareddy districts of Telangana state of India. These demonstrations were organized under the Scheduled Caste Sub Plan of the Indian Institute of Rice Research during the wet season of 2021. The biofortified varieties assume great significance to achieve nutrition security. Hence, the zinc biofortified rice variety, DRR Dhan 48 was demonstrated on the 142 farmer fields and the economic impact of these demonstrations was assessed with the 'difference in difference' approach. The results revealed that the production of rice under demonstration plots was more profitable with a higher benefit-to-cost ratio (B:C; 1.9) compared to that of the control plots (1.4). The independent two-sample t-test revealed that the productivity at the control plots was not statistically different from that of the demonstrations plots (p = 0.112) before the project was implemented, however, with the intervention in the form of the demonstration of improved rice production technology, the productivity differed significantly (p = 0.000) for the control and the demonstration plots for the intervention year. The results of the difference in differences estimator revealed that there was a positive impact of demonstrations on the yield of the beneficiaries. The mean productivity of demonstration plots and control plots were 5.52 t/ha and 4.5 t/ha, respectively. The farmers had an additional yield advantage of 22.6% over the control plots. The results indicated that the adoption of an improved package of practices would enable harnessing higher productivity levels and bridging the yield gaps in similar agroecosystems. Also, the results suggest the practical significance of the popularization of biofortified rice varieties for food and nutritional security. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
44. Review of Agricultural-Related Water Security in Water-Scarce Countries: Jordan Case Study.
- Author
-
Beithou, Nabil, Qandil, Ahmed, Khalid, Mohammad Bani, Horvatinec, Jelena, and Ondrasek, Gabrijel
- Subjects
WATER shortages ,NATURAL resources ,RENEWABLE natural resources ,WATER security ,CROPPING systems ,CROPS ,GOVERNMENT policy - Abstract
Food security is an essential issue for human survival and civilization. Whenever food–water security is in doubt, the community is negatively affected. Globally, Jordan is the second most water-stressed country, located in an arid, politically divided and migratory active Middle East region that lacks the access to valuable natural resources such as fertile soils. Jordan receives about 78 m
3 /person/year from renewable resources, which represents 1% of the world water share. Jordan's Water Minister declared that a 50 million m3 lack of drinking water is to be faced next year; this shortage is added to the lack of irrigation water, which yields food insecurity and food price fluctuations that wear out the consumer. The aim of this study is to provide a comprehensive overview of the impact of agricultural cropping patterns and water security by analyzing the most relevant national databases. The study results will contribute to the development of national policy in order to strategize the aid programs and adaptation measures for more sustainable planning in the Jordanian agri-food sector. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
45. Nitrogen and Phosphorus Concentrations and Their Ratios as Indicators of Water Quality and Eutrophication of the Hydro-System Danube–Tisza–Danube.
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Savic, Radovan, Stajic, Milica, Blagojević, Boško, Bezdan, Atila, Vranesevic, Milica, Nikolić Jokanović, Vesna, Baumgertel, Aleksandar, Bubalo Kovačić, Marina, Horvatinec, Jelena, and Ondrasek, Gabrijel
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WATER quality ,PHOSPHORUS in water ,CANALS ,EUTROPHICATION ,WATER pollution ,ENVIRONMENTAL monitoring ,PHOSPHORUS - Abstract
Conserving clean and safe freshwater is a global challenge, with nitrogen (N) and phosphorus (P) as frequent limiting factors affecting water quality due to eutrophication. This paper provides a critical overview of the spatiotemporal variability in both nutrient concentrations and their total mass ratio (TN:TP) in the canal network of the Hydro system Danube–Tisza–Danube at 21 measuring locations monitored by the Environmental Protection Agency of the Republic of Serbia over a length of almost 1000 km, collected once a month during the last decade. A spatiotemporal variation in nutrient concentrations in the tested surface water samples was confirmed by correlations and cluster analyses. The highest TN concentrations were found in winter and early spring (non-vegetation season), and the highest TP concentrations in the middle of the year (vegetation season). The TN:TP mass ratio as an indicator of the eutrophication pointed out N and P co-limitation (TN:TP 8–24) in 64% of samples, N limitation (TN:TP < 8) was detected in 27% and P limitation (TN:TP > 24) in the remaining 9% of water samples. Such observations indicate slow-flowing, lowland water courses exposed to the effects of non-point and point contamination sources as nutrient runoff from the surrounding farmlands and/or urban and industrial zones, but further investigation is needed for clarification. These results are an important starting point for reducing N and P runoff loads and controlling source pollution to improve water quality and underpin recovery from eutrophication in the studied watershed. [ABSTRACT FROM AUTHOR]
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- 2022
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46. Characterization and Prediction of Water Stress Using Time Series and Artificial Intelligence Models.
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Gorlapalli, Amuktamalyada, Kallakuri, Supriya, Sreekanth, Pagadala Damodaram, Patil, Rahul, Bandumula, Nirmala, Ondrasek, Gabrijel, Admala, Meena, Gireesh, Channappa, Anantha, Madhyavenkatapura Siddaiah, Parmar, Brajendra, Yadav, Brahamdeo Kumar, Sundaram, Raman Meenakshi, and Rathod, Santosha
- Abstract
In agroecosystems, drought is a critical climatic phenomenon that affects evapotranspiration and induces water stress in plants. The objective in this study was to characterize and forecast water stress in the Hyderabad region of India using artificial intelligence models. The monthly precipitation data for the period 1982–2021 was characterized by the standardized precipitation index (SPI) and modeled using the classical autoregressive integrated moving average (ARIMA) model and artificial intelligence (AI), i.e., artificial neural network (ANN) and support vector regression (SVR) model. The results show that on the short-term SPI3 time scale the studied region experienced extreme water deficit in 1983, 1992, 1993, 2007, 2015, and 2018, while on the mid-term SPI6 time scale, 1983, 1991, 2011, and 2016 were extremely dry. In addition, the prediction of drought at both SPI3 and SPI6 time scales by AI models outperformed the classical ARIMA models in both, training and validation data sets. Among applied models, the SVR model performed better than other models in modeling and predicting drought (confirmed by root mean square error—RMSE), while the Diebold–Mariano test confirmed that SVR output was significantly superior. A reduction in the prediction error of SVR by 48% and 32% (vs. ARIMA), and by 21% and 26% (vs. ANN) was observed in the test data sets for both SPI3 and SPI6 time scales. These results may be due to the ability of the SVR model to account for the nonlinear and complex patterns in the input data sets against the classical linear ARIMA model. These results may contribute to more sustainable and efficient management of water resources/stress in cropping systems. [ABSTRACT FROM AUTHOR]
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- 2022
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47. Sustainable Intensification of a Rice–Maize System through Conservation Agriculture to Enhance System Productivity in Southern India.
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Tuti, Mangal Deep, Rapolu, Mahender Kumar, Sreedevi, Banugu, Bandumula, Nirmala, Kuchi, Surekha, Bandeppa, Sonth, Saha, Soumya, Parmar, Brajendra, Rathod, Santosha, Ondrasek, Gabrijel, and Sundaram, Raman Meenakshi
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AGRICULTURAL intensification ,AGRICULTURE ,SOIL depth ,STARTUP costs ,CROP rotation ,CROP management ,CORN ,NO-tillage - Abstract
Integrated management of rice–maize systems is an emerging challenge in southern India due to improper rice residues and tillage management in maize crops. Conservation agriculture (CA) practices such as a reduced tillage and maintaining stubble mulch may hold the potential to increase yields, reduce crop establishment costs and increase farm incomes. A five-year trial was performed to study the effect of different CA and establishment methods in rice on system productivity, profitability, and soil carbon status in a rice–maize system. In the rainy season, the trial consisted of two main treatments: (i) normal manual transplanting and (ii) direct-wet seeding, and three sub-main treatments at different sowing dates with fifteen day intervals. In addition, in the winter season, two tillage treatments (conventional and minimum tillage) were imposed over the rainy season treatments. Both rice and maize were grown under irrigated conditions. The results showed that sowing times at 15 day intervals did not impact the yield significantly. Transplanted rice obtained a significantly higher grain yield during the first four years, but in the last year, the yield was similar in both of the establishment methods. In the winter season, conventional tilled maize recorded a higher cob yield than under the minimum tilled treatment, except for the last year, where both the tillage treatment effects were the same. System productivity of CA-based minimum tilled rice–maize was inferior during the first three years but was superior to the conventionally tilled method in the fourth and fifth year. Pooled analysis revealed that the conventionally tilled rice–maize system resulted in a similar system productivity as that of the CA during the study period. The cost–benefit analysis revealed that transplanted rice and conventionally tilled maize fetched higher net returns of INR 111,074 and INR 101,658/ha, respectively, over the direct-wet seeded rice and CA. In addition, the 15 July rice sown followed by the maize system led to an increase in irrigation water productivity by 15.7%, and the total water (irrigation + rainfall) productivity by 27.1% in the maize crop compared with the 30 July sown system. The CA-based rice–maize system resulted in a significantly higher very labile (0.194%) and labile (0.196%) carbon concentration at a 0–5 cm depth of soil compared to those under the conventional system. Thus, CA can be recommended for southern India and similar agro-ecological tropic and sub-tropic conditions. This system can be followed with appropriate location-specific modification in South-Asian countries, where crop yields and soil health are declining as a result of continuous cereal–cereal crop rotation. [ABSTRACT FROM AUTHOR]
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- 2022
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48. Creation and Use of Highly Adaptive Productive and Technological Red Currant Genotypes to Improve the Assortment and Introduction into Different Ecological and Geographical Zones.
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Panfilova, Olga, Kahramanoğlu, Ibrahim, Ondrasek, Gabrijel, Okatan, Volkan, Ryago, Nelly, Tsoy, Mikhail, Golyaeva, Olga, and Knyazev, Sergey
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ECOLOGICAL zones ,GENOTYPES ,CLIMATE change ,BERRIES ,INFLORESCENCES ,HIERARCHICAL clustering (Cluster analysis) ,GROWING season - Abstract
Global climate change with the cyclicity of natural and climatic processes in the growing season of berry plants, causes weakening at the defense system to (a)biotic stressors, which actualize the need for accelerated cultivar-improving breeding. A new hybrid red currant material was obtained and studied by the method of interspecific hybridization. Correlation analysis was used to assess the relationship between adaptively significant and economical and biological traits. To assess intergenotypic variability, hierarchical clustering was used according to the studied features, which allowed combining three standard methods of multidimensional data analysis. Genotypes adapted to different stressors were identified. The genotypes 271-58-24, 44-5-2, 261-65-19, and 'Jonkheer van Tets' were found to have a higher ratio of bound water to free water as compared with the others. Moreover, the genotypes of 271-58-24, 261-65-19, 77-1-47, and 'Jonkheer van Tets' were found to have less cold damage during the cold periods. The two most productive genotypes were found to be the genotypes 44-5-2, 143-23-35, and 1426-21-80. A dependence of yield on the beginning of differentiation of flower buds, which led to the abundance of flower inflorescences, was revealed. Rapid restoration of leaf hydration ensured successful adaptation of genotypes to the "temperature shock" of the growing season. The genotypes 271-58-24 and 'Jonkheer van Tets' were then observed to be far from the test traits and none of these traits were observed to characterize these two genotypes. The genotypes of 261-65-19 and 77-1-47 were then observed to be characterized by their high stability to Cecidophyopsis ribis scores. Genotypes 261-65-19 and 271-58-24, obtained with the participation of 'Jonkheer van Tets' as the maternal form, showed sufficient resistance to Pseudopeziza ribis and Cecidophyopsis ribis. Overall results suggested that the hydration recovery of red currant plants is significantly important for a yield improvement. A new cultivar 'Podarok Pobediteliam (genotype 44-5-2) was obtained that meets the requirements of intensive gardening and is characterized by high adaptability, productivity, and technological effectiveness. [ABSTRACT FROM AUTHOR]
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- 2022
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49. Salt Stress in Plants and Mitigation Approaches.
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Ondrasek, Gabrijel, Rathod, Santosha, Manohara, Kallakeri Kannappa, Gireesh, Channappa, Anantha, Madhyavenkatapura Siddaiah, Sakhare, Akshay Sureshrao, Parmar, Brajendra, Yadav, Brahamdeo Kumar, Bandumula, Nirmala, Raihan, Farzana, Zielińska-Chmielewska, Anna, Meriño-Gergichevich, Cristian, Reyes-Díaz, Marjorie, Khan, Amanullah, Panfilova, Olga, Seguel Fuentealba, Alex, Romero, Sebastián Meier, Nabil, Beithou, Wan, Chunpeng, and Shepherd, Jonti
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WATER harvesting ,NATURAL resources ,SOIL salinization ,SALTWATER encroachment ,TILLAGE ,WATER conservation ,SALT ,DEFICIENCY diseases - Abstract
Salinization of soils and freshwater resources by natural processes and/or human activities has become an increasing issue that affects environmental services and socioeconomic relations. In addition, salinization jeopardizes agroecosystems, inducing salt stress in most cultivated plants (nutrient deficiency, pH and oxidative stress, biomass reduction), and directly affects the quality and quantity of food production. Depending on the type of salt/stress (alkaline or pH-neutral), specific approaches and solutions should be applied to ameliorate the situation on-site. Various agro-hydrotechnical (soil and water conservation, reduced tillage, mulching, rainwater harvesting, irrigation and drainage, control of seawater intrusion), biological (agroforestry, multi-cropping, cultivation of salt-resistant species, bacterial inoculation, promotion of mycorrhiza, grafting with salt-resistant rootstocks), chemical (application of organic and mineral amendments, phytohormones), bio-ecological (breeding, desalination, application of nano-based products, seed biopriming), and/or institutional solutions (salinity monitoring, integrated national and regional strategies) are very effective against salinity/salt stress and numerous other constraints. Advances in computer science (artificial intelligence, machine learning) provide rapid predictions of salinization processes from the field to the global scale, under numerous scenarios, including climate change. Thus, these results represent a comprehensive outcome and tool for a multidisciplinary approach to protect and control salinization, minimizing damages caused by salt stress. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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50. Combined Spraying of Boron and Zinc During Fruit Set and Premature Stage Improves Yield and Fruit Quality of European Hazelnut cv. Tonda di Giffoni.
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Meriño-Gergichevich, Cristian, Luengo-Escobar, Ana, Alarcón, David, Reyes-Díaz, Marjorie, Ondrasek, Gabrijel, Morina, Filis, and Ogass, Khristopher
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HAZEL ,FRUIT yield ,FRUIT quality ,NUTS ,CROP quality ,THEATRICAL scenery ,SPRAYING & dusting in agriculture ,ORCHARDS - Abstract
Boron (B) and zinc (Zn) are essential micronutrients of plant nutrition programs in orchards for securing the crop quality and yield. Although orchard supplementation with B and Zn is a common practice to overcome deficiencies or maintain their optimal levels, the efficiency of combined B and Zn spraying in relation to European hazelnut (Corylus avellana L.) phenological stage has not been investigated so far. Leaf and kernel mineral and functional traits were studied in cultivar Tonda di Giffoni after B and Zn spraying in four phenological stages. During the 2016/2017 season, 9-year-old trees were sprayed with B (0, 800, and 1,600 mg L
−1 ) and Zn (0, 400, and 800 mg L−1 ) under three treatments: B0 +Zn0 , B800 +Zn400 , and B1600 +Zn800 implemented in three spring application programs scheduled from October to December (P1: four times, P2: early two times, and P3: late two times). B and Zn treatments in P1 and P3 led to higher Zn concentration both in leaves and in kernels compared with non-sprayed trees. Stabilized nut production increased 2.5-fold under B800 +Zn400 in all three programs. Kernel/nut ratio improved in both B+Zn treatments in P1 and P3, while the percentage of blank nuts was reduced compared with B0 +Zn0 . Increased radical scavenging activity in B+Zn-treated kernels and leaves was not attributed to the accumulation of phenolics in P3 compared with B0 +Zn0 , whereas B and Zn spraying reduced the level of lipid peroxidation in both studied organs. According to the results, combined B and Zn should be sprayed at the end of spring (P3) on hazelnut plantations in temperate areas such as Southern Chile, whereas early applications (P2) showed an irregularity in nut production and functional traits in nuts. Moderate and partialized rates of B and Zn and the time of implementation contribute to improving the quantitative and qualitative features crucial for future sustainable hazelnut production. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
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