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Potato self-sufficiency in Indonesia faces three main problems: rising air temperatures, limited availability of low-temperature land suitable for potato cultivation, and lack of high-temperature tolerant potato varieties. Therefore, it is necessary to identify the tolerance of potato variety to high-temperature. This research was conducted in two locations: the optimum temperature location and the high-temperature location, using nine varieties, are Agria, Andina, Amabile, Cingkariang, Granola L, Granola K, Margahayu, Olympus, and Tedjo-MZ. The study design uses a split plot with three replications. Differences in temperature as the main plot and varieties as subplots. Parameters observed were air temperature, growth, and yield of potato tubers. The analysis carried out were the Stress Sensitivity Index (SSI), Stress Tolerance Index (STI), Yield Stability Index (YSI), and Cluster Analysis. The results showed that there were no tolerant to high-temperature varieties. Based on the STI, only Olympus was a medium tolerant of high temperatures. Based on the Stress Sensitivity Index (SSI), four varieties are moderately susceptible to high temperatures (Olympus, Andina, Cingkariang, and Margahayu). The YSI analysis shows the same results as the SSI. The cluster analysis results showed harmony between the results of the stress index analysis and cluster analysis. Nine varieties had a high similarity (87.3%), meaning that all varieties had the same characteristics and less tolerance to high temperatures. Olympus was the more tolerant variety to high temperatures, followed by Andina, Cingkariang, and Margahayu. The four varieties consider promising potato lines in high-temperature areas.

The serious problems of sandy soils for crop development are low water-holding capacity, nutrient retention, and low content of all nutrients. The objective of the study was to increase the nutrient content of sandy soil and evaluate nutrient types that mostly affect the high shallot yield with reasonable economic values. The field experiment was conducted on the upland sandy loam soil. Six treatments consisting of complete nutrients, N-, P-, K-, Mg- and S-omission tests were arranged in a randomly completed block design with four replicates. The observed parameters included soil physicochemical properties, tissue nutrient content, growth, yield, and input-output of shallot cultivation. The results showed that N, P, K, Mg and S application successfully increased shallot bulb, achieving 11.43 t ha−1 on sandy soil. The order of shallot tissue content was K > N > P~Mg > S, where the S, P, N, and Mg are limiting factors, as revealed by significantly lower relative yield (varying from 79 to 88%). The highest weight loss during storage occurred for S-omission treatment (40 to 60%), indicating insufficient S tissue is the most responsible for the quality of shallot. The complete nutrient treatment gave the highest income (7446.09 USD ha−1) with a revenue cost ratio of 2.41 compared to other treatments. The tolerance limit for price reductions that do not cause losses was 58.59%.

The regional logistics system known as sislogda is one of Central Java’s leading priority programs to achieve food security and competitiveness. Food availability in Central Java is not continuous, causing price disparities. The implementation of the rice commodity sislogda concept is not yet known. This research aims to Analyze the application of the food sislogda concept policy, the supply chain of food commodities, and the problem of food characteristics for Sislogda. The research was conducted in Central Java, with sample locations in the Regencies of Grobogan, Brebes, Wonogiri, Magelang, and Sragen—data collection techniques using FGDs and surveys with related parties. The analysis used is descriptive and qualitative. Result: 1) Implementation of the Sislogda concept policy can be carried out in Central Java because it has regulations as a driving force for sislogda in the form of sustainable land, water supply, insurance for rice farming and production facilities, capital, and human resource development; 2) Supply Chain: Rice commodities: farmers, grain traders, rice milling units (RMU), Logistic institution service (Bulog_, rice traders and consumers; ii) Red chili and Red Onion: farmers, village collectors, sub-district collectors, wholesalers, consumers; 3) Problems: i) Commodity of rice, preparing products according to SNI standards by logistics actors is still difficult because the partnership between logistics actors has not been written yet, ii) Commodities of red onion and chilies that cannot be produced can cause price disparities between seasons. Conclusion: Regional logistics system (sislogda) for food can be implemented by spurring the implementation of policies. Prepare the availability and quality of food with the standards that have been set and carried out by logistics actors with a written partnership

Currently, botanical seeds of shallots or the true seed shallot (TSS) are becoming more accessible. The problem is that seeding botanical seeds requires the proper media to support the seeds to grow healthy and produce tubers as qualified as that from tuber seeds. The study aimed to obtain the seedling media's type and thickness to support optimal TSS growth. The study was arranged in a factorial design with two treatment factors: media type and media thickness. The environmental design is a Split Plot, with the main plot being a media type consisting of soil (soil + organic fertilizer + husk charcoal) and cocopeat (cocopeat + organic fertilizer + husk charcoal) as sub-plots is the thickness of the planting medium, with two levels of 3 and 5 cm, with five replications. The results showed that based on shoot length, stem diameter, root length, and total chlorophyll content, it was found that soil and cocopeat media with a thickness of 5 cm gave the best vegetative growth as well as the chlorophyll content compared to soil and cocopeat media with a thickness of 3 cm. The results of this study provide information that using media with a thickness of 5 cm gives better seed growth than media of 3 cm.

Centella asiatica is an herbal plant with many health benefits due to the content of asiaticoside compounds. Factors affecting asiaticoside content are altitude, soil texture, and soil nutrient status. This research aimed to identify the effect of zeolite, P2O5 fertilizer, and soil media from different altitudes on C. asiatica. The research was conducted in a greenhouse from August 2017–June 2018. The experimental design was a factorial, completely randomized design with three factors and four replications. The first factor was soil media that originated from 100, 450, and 900 m above sea level (asl), the second factor was the dose of P2O5 fertilizer (0, 27, 54, and 81 kg ha−1), and the third was the dose of zeolite (0, 3, and 6 t ha−1). The results showed that applying zeolite minerals at all altitudes increased nutrient availability and soil cation exchange capacity (CEC) by up to 70%. The novelty of this study is that the soil from an altitude of 900 m asl, with a P2O5 fertilizer dose of 54 kg ha−1, has a loamy sand soil texture and produces the highest asiaticoside content (3.61%) and the largest plant dry weight (19.24 g). These results did not significantly differ from those obtained from the soil 450 m asl with a sandy loam soil texture (the most suitable soil texture for C. asiatica), that is 3.37% asiaticoside and 19.87 g plant dry weight. This study concluded that C. asiatica could develop in loamy sand soil by giving it 54 kg ha−1 P2O5 fertilizer.

Rice production in the karst dryland is still low, due to soil characteristics that lack nutrient availability. Meanwhile, upland rice has received less attention, and it has not been used to its full potential. This study aimed to evaluate the effect of various combinations of inorganic fertilizers, poultry manure, and upland rice varieties on the production and economic value of karst dryland in Gunungkidul, Yogyakarta. This experiment was arranged in a factorial design, with inorganic fertilizers, poultry manure, and upland rice varieties set in a randomized block design with three replications. The first factor was a combination of inorganic and organic fertilizer rates: 72 N kg ha−1 + 26 P2O5 kg ha−1 + 25 K2O ha−1 + 3 t ha−1 organic, 92 N kg ha−1 + 36 P2O5 kg ha−1 + 30 K2O kg ha−1 + 2 t ha−1 organic, 112 N kg ha−1 + 46 P2O5 kg ha−1 + 35 K2O kg ha−1 + 1 t ha−1 organic. The second factor is the upland varieties of Inpago 8, Inpago 10, and Inpago 12 and lowland variety Inpari 42 Agritan GSR, as checked. Based on the study, we concluded that the combination of 92 N kg ha−1 + 36 P2O5 kg ha−1 + 30 K2O kg ha−1 + 2 t ha−1 poultry manure fertilizers with Inpago 8 resulted in an IDR profit of 23,586,000 ha−1, and it is the most recommendable fertilizer and variety combination to be developed in the karst dryland, in consideration of land fertility and sustainability.

The problem of rice farming in Indonesia is the increasing extent of nutrient-poor land due to the lack of addition of organic matter and continuously inundated irrigated rice fields, causing the production of greenhouse gas emissions, such as methane gas (CH4), to increase. The study aims to determine the impact of organic fertilizers and rice varieties on rice yield, methane emissions, and the feasibility of farming in nutrient-poor rice fields. The study used a randomized block design in factorial with four replicates. The first factor is the type of organic fertilizers (compost of rice straw and goat manure), and the second factor is the variety of rice (Ciherang, Inpari 20, and Inpari 30). The results showed that the productivity of Inpari 20 (8.02 t·ha−1) was significantly higher than that of Inpari 30 (6.10 t·ha−1) and Ciherang (6.91 t·ha−1). The highest yields of Harvest Dry Grain (HDG) to Milled Dry Grain (MDG) were the Inpari 20 (88.23%), Inpari 30 (86.94%), and Ciherang (85.04%). Methane (CH4) emissions were highest in the Ciherang variety (56.4 kg h−1 season−1), followed by Inpari 30 (40.8 kg h−1 season−1), and lowest in Inpari 20 (22.3 kg h−1 season−1). Compared to Inpari 30 and Ciherang varieties, the Inpari 20 variety with rice straw compost has broad development viability in nutrient-poor paddy fields (highest R/C ratio and break-even point). More research on organic rice is needed to determine the productivity and emissions (methane, nitrite, carbon dioxide).

These activities aims to increase the capacity of farmer groups and expand job opportunities. An empowerment assessment was carried out on the Sri Rejeki farmer group located in Gembong Village, Bojongsari District, Purbalingga Regency, in August 2021-February 2022. The approach method used is participatory mentoring, by facilitating the needs of farmer groups in the rice seed business, which includes: obtaining seed business recommendations, working capital and technological innovation. The data collected includes farmer group resources, assistance in the production process, and inputs and outputs of rice seed production. Data was collected through interviews with the head of the farmer group, the head of PB Sri Rejeki, field assistants and direct observation in the field. The data obtained were analysed descriptively. The results of the study show that increasing the group's capacity in seed farming, among others, has a drying floor, warehouse and thresher. Working capital facilitation in labour, fertilizers, medicines, harvested plastic sacks, and 5 kg plastic seed packaging can provide motivation and initial capital for a rice seed business. The seed technology innovation applied resulted in 5,500 kg of ES class seeds. Empowerment of farmer groups needs to be done through assistance and provision of initial capital.

Peluang peningkatan produktivitas kentang di Jawa Tengah masih sangat terbuka, mengingat produktivitasnya belum maksimal. Salah satu penyebabnya diduga adalah frekuensi penanaman kentang yang terlalu sering, yaitu dua sampai tiga kali dalam satu tahun dengan pola kentang-kentang-kentang atau sayuran lain-kentang-kentang. Oleh karena itu dilakukan percobaan dengan tujuan mengidentifikasi perbedaan pertumbuhan dan hasil kentang yang ditanam di tiga wilayah dataran tinggi Dieng yang memiliki pola tanam yang berbeda dalam setahun. Percobaan disusun dengan rancangan petak terbagi, perbedaan pola tanam di tiga lokasi sebagai petak utama (Wonosobo 2 kali tanam kentang/tahun, Banjarnegara 3 kali tanam kentang/tahun, Pekalongan 1 kali tanam kentang/tahun) dan tiga varietas sebagai anak petak (Granola L, Granola K, Tedjo-MZ) yang disusun dalam tiga ulangan. Hasil penelitian menunjukkan bahwa pertumbuhan tiga varietas lebih optimal di lokasi Pekalongan dibanding di Wonosobo dan Banjarnegara. Demikian juga dengan komponen hasil yaitu bobot segar umbi per tanaman dan produktivitas umbi per hektar menunjukkan bahwa di lokasi Pekalongan nyata lebih tinggi dibanding di Wonosobo dan Banjarnegara. Hasil percobaan ini memberikan informasi awal bahwa perbedaan pola tanam atau intensitas tanaman kentang dalam setahun berpengaruh terhadap pertumbuhan dan hasil yang diperoleh. Pola tanam kentang satu kali setahun menunjukkan pertumbuhan dan hasil yang lebih baik dibanding pola tanam kentang dua dan tiga kali setahun.

A study was addressed to evaluate the effect of rearing management improvement particularly for feed and housing management on milk production of dairy cattle. The investigation was performed at Kembang Village, Ampel Sub-District of Boyolali District, a location for Prima Tani implementation, involved the participation of 8 people of farmer group members. A group of four cattle fed the traditional diet, whereas the remaining four were offered the introduced diet containing elephant grass + commercial concentrate + cassava tuber. Measurements were made for feed intake, milk production, and milk density. Results showed that milk production of dairy cattle under the improved management was higher (P

Merah Delimais considered as superior native variety of water apple in Demak. The fruitis wellknown as the high quality water apple in theregions. Suitable environment of climate,topography and soil physic chemical properties in Demak make it possible for the fruit to produce more than twice per year with attractive physical appearance of the fruit as redand shiny color, large, sweet, crispy and high economic value. However, researches of Merah Delima water apple were still limited compared to other fruit superior commodities. Therefore, the survey as assessment method of water apple was conducted to identify and study the differences of cultivation, growth and production of the fruits which were cultivated in dryland and paddy fields as specific conditions of Demak regency. The assessmentseries included pre-survey in October 2011 – January 2012 and plant’s observation in March –June 2012 which was a peak season for the fruits. The site locations were chosen purposively ,i.e. in Wonosalam, Demak and Bonang Sub Districts. Inthatcase, water apple tree’s population differences were being the criteria of sites selection. Inpresurvey, as many as 50 farmers were interviewed as respondents with the proportion of consecutive 28 : 14 : and 8 farmers for each Sub District. The plant’s observation included 54 trees which were chosen purposively. ‘Nested design’ was used (3 subdistrict x 2 land types x 3 plants). Basically the cultivation results were compared to Water Apple Standard Operating Procedures (SOP) issued by Demak Agriculture Services. Parameters observed in the survey involved physical and chemical properties of soil, microclimate, growth, production and quality of water apple. The results showed that water apple cultivation applied statuses in dry and paddy field were only in low and medium, based on Water Apple Standard Operating Procedures (SOP). Infact, there were significant interaction effect between land types and cultivation applied as well as between the land types and cultivation applied in Merah Delima Water Apple production. Water Apple cultivation in surjan system or integrated with fish – farming system were less suitable since most of the time the roots were under anaerobic condition. Water apple cultivationis more suitable in flat land within termittent irrigation system since soil moisture was not relatively high. In Grumosol soi ltype, available soil moisture is considered as one of soil physical properties that has negative significant effect for Merah Delima water apple production, both in dry land and paddy field. In that case, the higher available soil moisture the lower water apple Merah Delima production.Key words: Merah Delima Water apple, cultivation, dry land, paddy field, Demak SubDistrict