11 results on '"Cargnelutti Filho, Alberto"'
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2. Number of trials to estimate the condition number in rye traits.
- Author
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Márcio Neu, Ismael Mario, Cargnelutti Filho, Alberto, Lixinski Silveira, Daniela, Vieira Pezzini, Rafael, and Tolfo Bandeira, Cirineu
- Abstract
Multicollinearity must be diagnosed in multivariate analyses. Among the indicators, the condition number can be used to quantify the degree of multicollinearity. Hence, this study sought to determine the number of measurements (trials) necessary to estimate the number of condition in linear correlation matrices between rye traits. Five uniformity trials were carried out with 'BRS Progresso' rye, and eight morphological traits and eight productive traits were evaluated, forming two groups. In each group of traits, six cases (combinations of traits) were planned and the multicollinearity diagnosis was performed. Repeatability analyses were performed using the following methods: analysis of variance, principal component analysis, and structural analysis, and the number of measurements (trials) was determined for different levels of precision. A higher condition number of repeatability coefficients was obtained by the principal component methods (based on correlation and variance and covariance matrices) and structural analysis based on the variance and covariance matrix. A greater number of measurements (trials) is necessary to estimate the number of conditions in productive traits compared to morphological ones. One trial is enough to efficiently estimate the condition number with a minimum accuracy of 80% in morphological and productive traits of rye, whereas at least three trials are required for 95% accuracy. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
3. Probabilidade de ocorrência de temperaturas mínimas e máximas mensais do ar prejudiciais e favoráveis aos cultivos agrícolas no Rio Grande do Sul.
- Author
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de Morais Borges, Rodrigo, Cargnelutti Filho, Alberto, and Vieira Loro, Murilo
- Subjects
TIME series analysis ,WEIBULL distribution ,GAUSSIAN distribution ,DISTRIBUTION (Probability theory) ,GAMMA distributions ,CROPS ,LOGNORMAL distribution - Abstract
Copyright of Boletim de Geografia is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
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4. Genetic divergence in maize regarding grain yield and tassel traits.
- Author
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Lixinski Silveira, Daniela, Cargnelutti Filho, Alberto, Márcio Neu, Ismael Mario, Maronez de Souza, Jéssica, Andiara Kleinpaul, Jéssica, and Elias Dumke, Gabriel
- Abstract
Copyright of Revista Ciência Agronômica is the property of Revista Ciencia Agronomica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
5. Experimental dimensions and precision in trials with millet and slender leaf rattlebox.
- Author
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Cargnelutti Filho, Alberto, Mario Márcio Neu, Ismael, Vinícius Loregian, Marcos, Escaio Bubans, Valéria, Manfio Somavilla, Felipe, and Dumke, Gabriel Elias
- Abstract
Copyright of Revista Ciência Agronômica is the property of Revista Ciencia Agronomica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
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6. A sustainable approach to control whitefly on soybean: Integrating entomopathogenic fungi with insecticides.
- Author
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Bevilaqua, Júlia Guimarães, Padilha, Guilherme, Pozebon, Henrique, Marques, Rafael Paz, Cargnelutti Filho, Alberto, Ramon, Paulo César, Boeni, Lucas, Castilhos, Lauren Brondani, da Luz, Giulian Rafael, Brum, André Luís Soares de Souza, Biruel, Nicolle, Wojahn, Bruna, Leão, José Domingos Jacques, and Arnemann, Jonas André
- Subjects
ENTOMOPATHOGENIC fungi ,ALEYRODIDAE ,CROPS ,SWEETPOTATO whitefly ,PEST control ,INSECTICIDES - Abstract
Soybean is the main agricultural crop produced and exported by Brazil, and the whitefly, Bemisia tabaci (Gennadius, 1889) (Hemiptera: Aleyrodidae), is one of the main pests of this crop. Whitefly control is carried out mainly with chemical insecticides, which has led to an increase in number of applications and evolution towards resistant populations. There is a need to study alternatives for the control of this insect pest, and biological control using entomopathogenic fungi can be an effective tool, offering less risk to the environment. This study aimed to design and evaluate four management programs in two soybean cropping seasons, including two integrated management alternatives, a conventional chemical management alternative and a biological (fungal) control alternative. Two sequential sprays set 10 days apart were performed for each program, and the results of ANOVA and Scott-Knott test (P ≤ 0.05) revealed differences among treatments. The integrated management consisting of a sequential spray of chemical insecticide followed by a fungal one stood out as the best control option, presenting 60% of control efficacy for whitefly adults and 34% for whitefly nymphs in the first cropping season; 83% of control efficacy for whitefly adults and 53% for whitefly nymphs in the second cropping season. Therefore, integrating fungi-based products with chemical insecticides may provide an efficient alternative for controlling B. tabaci in soybean. • Integrating entomopathogenic fungi-based products with chemical insecticides enhances B. tabaci control in soybean. • Applying fungi-based products after two sprays of chemical insecticides provides 60–83% of control for whitefly adults. • This strategy is more effective for B. tabaci control than applying fungal products in the first spray or alone. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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7. Phyllochron and leaf appearance rate in oat.
- Author
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Görgen Chaves, Gabriela, Cargnelutti Filho, Alberto, Mendonça Alves, Bruna, Lavezo, André, Wartha, Cleiton Antonio, Barbieri Uliana, Daniela, Vieira Pezzini, Rafael, Andiara Kleinpaul, Jéssica, and Márcio Neu, Ismael Mario
- Subjects
OAT varieties ,LEAVES ,CROPS ,CULTIVARS ,COMPOSITION of oats - Abstract
Phyllochron and leaf appearance rate are both important parameters in the production efficiency of agricultural crops. The objectives of this study were to determine the phyllochron and leaf appearance rate in 4 oat cultivars (Avena sativa L.) in 3 sowing dates and verify the variability of phyllochron and leaf appearance rate among cultivars and sowing dates. The experimental design was the completely randomized with 12 treatments and 20 repetitions. Treatments were formed by the combination of 4 cultivars (URS Charrua, URS Taura, URS Estampa, and URS Corona) and 3 sowing dates in 2014 (April 28, May 28, and July 14). In each plant (repetition) of each treatment, the number of expanded leaves (NEL) was counted 3 times per week from the first leaf emission until flowering. For each plant, cultivar, and sowing date, linear regression was adjusted between NEL and accumulated thermal time (ATT) and between NEL and number of days after emergence (DAE). Phyllochron was determined by the inverse of the angular coefficient of the linear regression between the NEL and ATT. The leaf appearance rate was determined by the inverse of the angular coefficient of the linear regression between NEL and DAE. In oat, there is variability of phyllochron and leaf appearance rate among cultivars and sowing dates. Phyllochron oscillates between 95.88 and 117.70 °C day·leaf
-1 and leaf appearance rate, between 6.41 and 9.65 days·leaf-1 . The oat cropping management in function of phyllochron and leaf appearance rate is dependent on cultivars and sowing dates. [ABSTRACT FROM AUTHOR]- Published
- 2017
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8. Relações lineares entre caracteres de linho.
- Author
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Cargnelutti Filho, Alberto, Mendonça Alves, Bruna, Andiara Kleinpaul, Jéssica, Márcio Neu, Ismael Mario, Lixinski Silveira, Daniela, Martins Simões, Fernanda, and Antonio Wartha, Cleiton
- Abstract
Copyright of Bragantia is the property of Instituto Agronomico de Campinas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
- Full Text
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9. Sample size for estimating the population of stink bugs in soybean crops.
- Author
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Stürmer, Glauber Renato, Cargnelutti Filho, Alberto, Guedes, Jerson Vanderlei Carús, and Stacke, Regis Felipe
- Abstract
Copyright of Revista Ciência Agronômica is the property of Revista Ciencia Agronomica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
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10. Tamanho de parcela e número de repetições na cultura do milheto em épocas de avaliação.
- Author
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Burin, Cláudia, Cargnelutti Filho, Alberto, Mendonça Alves, Bruna, Toebe, Marcos, Andiara Kleinpaul, Jéssica, and Márcio Neu, Ismael Mario
- Abstract
Copyright of Bragantia is the property of Instituto Agronomico de Campinas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
- Full Text
- View/download PDF
11. Damage assessment of Bemisia tabaci and economic injury level on soybean.
- Author
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Padilha, Guilherme, Pozebon, Henrique, Patias, Leonardo S., Ferreira, Dener R., Castilhos, Lauren B., Forgiarini, Sarah E., Donatti, Alessandro, Bevilaqua, Julia G., Marques, Rafael P., Moro, Daniela, Rohrig, Alberto, Bones, Scheila A.S., Cargnelutti Filho, Alberto, Pes, Luciano Z., and Arnemann, Jonas A.
- Subjects
SWEETPOTATO whitefly ,ARTHROPOD pests ,SOYBEAN ,PLANT canopies ,ANALYSIS of variance ,GRAIN yields ,SOYBEAN diseases & pests - Abstract
The whitefly Bemisia tabaci is the second most widespread and economically important arthropod pest in the world, with frequent population outbreaks occurring in Brazil and increasing economic damage on soybean crops. High oviposition rate, short life cycle and uneven distribution along the plants' canopy favour the dissemination of B. tabaci within soybean crops and compromise the efficacy of control measures. The objective of this work was to quantify soybean yield reduction caused by B. tabaci damage and propose an economic injury level (EIL) for this pest in soybean crops. Experimental design was randomized blocks with four replicates. Soybean grain yield and its components (number of pods, number of grains and 1000-grain weight) were quantified in relation to different levels of B. tabaci infestation in two cropping seasons, obtained through insecticide sprays carried out at different growth stages of the soybean plants. The resulting data were submitted to variance analysis, mean separation test and regression analysis. We found that a population density of one whitefly trifoliate
−1 reduces from 0.88 to 1.79 grains plant−1 , 0.16 ± 0.01 g plant−1 or 31.24 ± 4.21 kg ha−1 of grain yield, and varies in response for pods plant−1 and 1000-grains weight. Based on this information, we suggest an economic injury level of 1.465 ± 0.195 B. tabaci trifoliate−1 , considering a control cost of US$ 20.00 ha-1 and soybean crop value of US$ 400.00 tonne−1 . • The number of B. tabaci soybean trifoliate−1 is decisive for the level of control. • The population peak was reached during soybean reproductive phases. • The economic injury level of B. tabaci in soybean is 1.465 ± 0.195 trifoliate−1 . • One B. tabaci trifoliate−1 reduced 0.16 ± 0.01 g plant−1 or 31.24 ± 4.21 kg ha−1 . • One B. tabaci trifoliate−1 reduced 0.88 to 1.79 grains plant−1 . [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
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