Agronomy Journal最新文献_第10页

Sulfur fertilization sources for multisite sugarcane (Saccharum spp.) fields in Brazil 巴西多点甘蔗（Saccharum spp.）田的硫施肥来源

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-06-02 DOI: 10.1002/agj2.70088

Rafael Otto, Lucas Miguel Altarugio, Victor Xavier Rizzo, Estêvão Vicari Mellis, Sarah Tenelli, Johnny Rodrigues Soares, Sarah Mello Leite Moretti

{"title":"Sulfur fertilization sources for multisite sugarcane (Saccharum spp.) fields in Brazil","authors":"Rafael Otto, Lucas Miguel Altarugio, Victor Xavier Rizzo, Estêvão Vicari Mellis, Sarah Tenelli, Johnny Rodrigues Soares, Sarah Mello Leite Moretti","doi":"10.1002/agj2.70088","DOIUrl":"10.1002/agj2.70088","url":null,"abstract":"Sulfur (S) deficiency in soils has become a common problem in Brazilian sugarcane (Saccharum spp.) fields due to high nutrient extraction by the crop without adequate replacement. Five field trials were conducted in Brazil over two consecutive ratoon cycles to evaluate S fertilizer sources and application rates and their residual effects on soil S availability and sugarcane yield. The treatments included (1) two S application rates (50 and 100 kg S ha−1), (2) four S sources (gypsum, elemental sulfur [ES], ammonium sulfate [AS], and polysulfate [PS]), and (3) a control (no S application). The PS and AS were applied in band over sugarcane rows, whereas gypsum and ES were broadcast during the first ratoon, subsequently, no S was reapplied and residual effects were assessed in the second ratoon. The broadcast application of gypsum at 100 kg S ha−1 increased the available soil S concentration after 6 and 12 months. However, S levels remained below 10 mg dm−3 after two ratoon harvests, regardless of the S source. Leaf S concentration increased after band application of PS at 100 kg S ha−1 in both ratoon cycles and after broadcast application of ES and gypsum (residual effect) in the second ratoon. Stalk yield increased by an average of 5–7 Mg ha−1 across sites in the first ratoon with S sources application. In the second ratoon, significant residual effects of S sources led to an increase in stalk yield, averaging 7–9 Mg ha−1 compared to the control. Our findings indicate that S fertilization should be applied annually, with sulfate-based fertilizers preferred in the short term. ES shows potential for long-term S supply.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agj2.70088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-input, interpretable models to forecast maize yield at multiple scales based on absorbed radiation 基于吸收辐射的低投入、可解释的多尺度玉米产量预测模型

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-06-01 DOI: 10.1002/agj2.70089

Martin Menendez-Coccoz, Diego H. Rotili, María E. Otegui, Gustavo Martini, María Paolini, Carlos Di Bella, Gervasio Piñeiro, Martín Oesterheld

{"title":"Low-input, interpretable models to forecast maize yield at multiple scales based on absorbed radiation","authors":"Martin Menendez-Coccoz, Diego H. Rotili, María E. Otegui, Gustavo Martini, María Paolini, Carlos Di Bella, Gervasio Piñeiro, Martín Oesterheld","doi":"10.1002/agj2.70089","DOIUrl":"10.1002/agj2.70089","url":null,"abstract":"Most crop yield forecast models operate at coarse scales (e.g., county or region) or need extensive input data for finer resolutions. Here, we present maize (Zea mays L.) yield forecast models that require minimal user data and operate at field and regional scales throughout the growing season. Using 1853 maize field-years in Argentina, with known location, sowing date, and yield, our models leveraged absorbed radiation (from satellite imagery), temperature-based phenology, regional site-year properties, El Niño-Southern Oscillation (ENSO) phase predictions, and sowing period. At the field scale, our models achieved high accuracy at physiological maturity, with a mean error of 1 t ha−1 (16%). Yield forecasts were mainly driven by absorbed radiation during the reproductive phase and a regional factor. Early-season forecasts incorporated ENSO and sowing period, but with reduced accuracy. When scaled to regional forecasts, the models performed even better, with a mean error of 0.3 t ha−1 (4%). These results combine a novel case of yield forecast because of the low data requirements from users, high anticipation (30–90 days before harvest), and good levels of accuracy at both field and regional scales. Additionally, the models’ interpretability makes them valuable diagnostic tools for post-season analysis.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of no-till furrow opener and seed treatment on ultra-early wheat seeding systems 免耕开沟和种子处理对小麦超早播系统的影响

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-05-25 DOI: 10.1002/agj2.70084

Brian L. Beres, Zhijie Wang, Ryan Dyck, Steven Simmill, Warren Taylor, Kaitlyn Heidinger, F. Craig Stevenson

{"title":"Influence of no-till furrow opener and seed treatment on ultra-early wheat seeding systems","authors":"Brian L. Beres, Zhijie Wang, Ryan Dyck, Steven Simmill, Warren Taylor, Kaitlyn Heidinger, F. Craig Stevenson","doi":"10.1002/agj2.70084","DOIUrl":"10.1002/agj2.70084","url":null,"abstract":"Ultra-early planting is an alternative practice that involves planting based on soil temperature, initiated once the trigger temperature of >0°C is observed, regardless of calendar date. Our previous research concluded that spring wheat (Triticum aestivum L.) grain yields are maintained or improved with enhanced yield stability when adopting this practice. However, a knowledge gap remains around the influence of furrow opener configuration and seed treatments to mitigate abiotic stressors related to cold soil and ambient temperatures. Thus, a 5-year experiment was conducted in Lethbridge, AB, to examine the effects of planting dates triggered by soil temperatures of 0°C, 2.5°C, 5°C, 7.5°C, and 10°C; seed treatment (tebuconazole, prothioconazole, metalaxyl, and imidacloprid vs. untreated); and furrow opener (knife vs. disc) on ultra-early planted spring wheat. Optimal grain yield was achieved when wheat was planted at a soil temperature of 0°C, irrespective of seed treatment and furrow opener type. A significant yield reduction was observed when wheat was planted at a soil temperature of 10°C. Wheat planted at soil temperatures of ≤7.5°C with a disc opener often resulted in high and stable yields, regardless of seed treatment. Grain protein concentration responses to soil temperature trigger were less consistent, but wheat planted at 10°C accumulated low and unstable concentrations. Seed treatment delayed emergence, flowering, and maturity; reduced head density; and ultimately lowered grain yield. Overall, spring wheat grain yield and protein concentration were optimized when planted at soil temperatures of ≥0 and ≤7.5°C using a disc opener, regardless of seed treatment adoption.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agj2.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photoperiod and vernalization requirements in Argentinian oat genotypes 阿根廷燕麦基因型的光周期和春化需求

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-05-22 DOI: 10.1002/agj2.70078

Juan Ignacio Dietz, Laura Victoria Da Silva, Matías Schierenbeck, Martín Pardi, María Rosa Simón

{"title":"Photoperiod and vernalization requirements in Argentinian oat genotypes","authors":"Juan Ignacio Dietz, Laura Victoria Da Silva, Matías Schierenbeck, Martín Pardi, María Rosa Simón","doi":"10.1002/agj2.70078","DOIUrl":"10.1002/agj2.70078","url":null,"abstract":"Understanding the response to temperature, vernalization, and photoperiod provides a significant advantage for optimizing the adaptability of oat (Avena sativa) genotypes to different production areas and sowing seasons in a climate change context. For this, two experiments were carried out in the Argentinian Pampas, where nine oat genotypes were sown on six sowing dates (from June to December, <10 h to >15 h photoperiod) and three vernalization treatments (40, 20, and 0 days at 4°C). Days from emergence to flowering were evaluated and then converted to growing degree days. The adjustment of duration from emergence to flowering using an average photoperiod was performed using bilinear regressions to determine the photoperiod sensitivity (Ps), threshold (Pt), and earliness per se. Our findings showed that genotypes were insensitive to vernalization, others with minimal requirements (<480 cold hours at 4°C) while materials with high requirements were not found, indicating a reasonably constrained range of variability. Different photoperiod responses were found between the genotypes explained by differences in Ps (slopes from −310°C days h−1 to −158°C days h−1) and Pt. Overall, vernalization was not strictly necessary for flowering across all genotypes or sowing dates, but its fulfillment significantly accelerated developmental transitions under long-day conditions.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corn growth and yield response to starter fertilizer in phosphorus-sufficient soils 富磷土壤中玉米生长和产量对发酵剂的响应

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-05-22 DOI: 10.1002/agj2.70079

Larousse Dorissant, Jason Clark, Péter Kovács

{"title":"Corn growth and yield response to starter fertilizer in phosphorus-sufficient soils","authors":"Larousse Dorissant, Jason Clark, Péter Kovács","doi":"10.1002/agj2.70079","DOIUrl":"10.1002/agj2.70079","url":null,"abstract":"Previous research on starter fertilizer application has shown significant grain yield improvement; yet the greatest responses often occur on fields below the critical soil phosphorus (P) threshold. This study aimed to (i) investigate the impacts of starter fertilizer placement on corn growth, nutrient uptake, and grain yield in P-sufficient soils and (ii) determine whether the timing of planting influences corn response to starter fertilizer placement across different growing environments. Field experiments were conducted at three locations in eastern South Dakota from 2021 to 2023, comparing an early with a normal planting date utilizing different starter fertilizer combinations, placements, and rates. Liquid fertilizers were used with and without zinc, placed in the seed in-furrow at a lower (IFL) and a higher (IFH) rates, 5 × 5 normal rate placement (5 × 5), a combination of IFL and 5 × 5 placement and a control treatment without starter fertilizer application, with nutrient rates 10, 15, 25, 35, and 0 kg P2O5 ha−1, respectively. The planting timing did not significantly influence corn response to starter fertilizer placement across the locations. Starter fertilizer placement, relative to the control, increased early-season growth stage by 3.2% and 2.3%, plant height by 0.75 and 3.1 cm, dry matter production by 83 kg ha−1, N and P uptake by 3.1 and 0.34 kg ha−1, respectively. However, these improvements did not translate into increased whole season crop physiological parameters or grain yield. Therefore, this result indicates that starter fertilizer application will not be necessary on P-sufficient soils for yield increased in eastern South Dakota.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agj2.70079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Response of potato tuber yield and uptake to potassium and nitrogen in sandy soils 沙质土壤马铃薯块茎产量和吸收对钾、氮的响应

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-05-22 DOI: 10.1002/agj2.70081

Simranpreet K. Sidhu, Ayush Sharma, Navdeep Kaur, Amanpreet Sandhu, Hayden Shellenbarger, Lincoln Zotarelli, Christian Christensen, Simon Riley, Lakesh K. Sharma

{"title":"Response of potato tuber yield and uptake to potassium and nitrogen in sandy soils","authors":"Simranpreet K. Sidhu, Ayush Sharma, Navdeep Kaur, Amanpreet Sandhu, Hayden Shellenbarger, Lincoln Zotarelli, Christian Christensen, Simon Riley, Lakesh K. Sharma","doi":"10.1002/agj2.70081","DOIUrl":"10.1002/agj2.70081","url":null,"abstract":"Potassium (K) is essential for potato (Solanum tuberosum L.) production, influencing physiological processes, nutrient uptake, and tuber quality. This study evaluated the interactive effects of K and nitrogen (N) on potato yield and quality in Florida's sandy soils to determine optimal K application rates for maximum yield and improved N use efficiency. A 2-year experiment was conducted in a split-plot design with three N rates (168, 224, and 280 kg N ha−1) in the main plot and six K rates (0, 112, 224, 336, 448, and 560 kg K2O ha−1) in subplots in four replications in Hastings, FL. Results revealed a significant effect of seasons on the soil K availability, uptake, tuber yield, and nutrient use efficiency. The soil K levels and uptake increased with higher K application rates across all potato growth stages. Regression analysis identified optimum K rate of 425 and 535 kg K₂O ha−1 for total and marketable tuber yield, respectively. In the first season, total tuber yield increased by 33% and 38% at K application rates of 336 and 560 kg K₂O ha−1, respectively, compared to no K application. Tuber specific gravity was not affected by K rates, while the higher K application rates increased the N use efficiency and decreased benefit-cost ratio. The study concludes that K application rates above 425 kg K₂O ha−1 maximize potato tuber yield and enhance N efficiency, supporting the revision of K recommendations in sandy soils based on low K status.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of key meteorological factors influencing crop evapotranspiration using time-frequency domain analysis 利用时频分析识别影响作物蒸散的关键气象因子

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-05-22 DOI: 10.1002/agj2.70090

Xing Yang, Miao Hou

{"title":"Identification of key meteorological factors influencing crop evapotranspiration using time-frequency domain analysis","authors":"Xing Yang, Miao Hou","doi":"10.1002/agj2.70090","DOIUrl":"10.1002/agj2.70090","url":null,"abstract":"Crop evapotranspiration (ETc) is a critical factor for understanding water demand in agricultural systems, influencing irrigation scheduling and water resource management. Identifying the meteorological factors influencing ETc is crucial for predicting variations in water needs and optimizing irrigation plans. Traditional correlation analysis methods, such as Pearson correlation, often fail to capture the time-frequency variations in ETc, which limits their ability to effectively identify the primary influencing factors. This study integrates the Penman–Monteith model, Pearson correlation analysis, wavelet analysis, and vector projection length calculation method to propose a comprehensive approach for identifying primary and secondary meteorological influences on ETc from a time-frequency perspective. Using rice (Oryza sativa) in the Gaoyou Irrigation District of Jiangsu Province, China, as a case study, the research examines seven meteorological factors—including air temperature, relative humidity, rainfall, and sunshine duration—along with four circulation indices, such as the East Asian Summer Monsoon index and ENSO index, from 1980 to 2021. The results indicate that sunshine duration and relative humidity are significant factors affecting the high-frequency and low-frequency signal components of local rice ETc, respectively. Additionally, other factors, such as minimum temperature, show strong correlations with ETc signals within specific frequency bands, positioning them as secondary influencing factors. This research presents a versatile framework that can be extended to other areas of hydrometeorology and beyond.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Actual evapotranspiration and variable crop coefficients for scheduling turfgrass irrigation 实际蒸散量和可变作物系数用于安排草坪草灌溉

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-05-22 DOI: 10.1002/agj2.70080

Bernd Leinauer, Dawn M. VanLeeuwen, Rossana Sallenave, Tatiana Kardashina, Dan Smeal

{"title":"Actual evapotranspiration and variable crop coefficients for scheduling turfgrass irrigation","authors":"Bernd Leinauer, Dawn M. VanLeeuwen, Rossana Sallenave, Tatiana Kardashina, Dan Smeal","doi":"10.1002/agj2.70080","DOIUrl":"10.1002/agj2.70080","url":null,"abstract":"Turfgrass irrigation based on evaporative requirements strengthens water conservation efforts. A study was conducted from 1998 to 2000 to determine actual evapotranspiration (ETa) of warm and cool-season turfgrasses and to develop crop coefficient (KC) values normalized for growing degree days. Predicted values of maximum ETa and KC were calculated, and data from a second study were used to validate the fitted polynomial functions. Estimated ETa differed in 1998 and 1999 and ranged from 5.42 mm day−1 (Poa pratensis L. ‘Adelphi’ in 1998) to 6.69 mm day−1 (Lolium perenne L. ‘Seville’ in 1999) for cool-season turfgrasses (CS) and from 4.54 mm day−1 [Buchloe dactyloides (Nutt.) Engelm. ‘Bison’ in 1999] to 5.15 mm day−1 [Cynodon dactylon (L.) Pers. ‘Guymon’ in 1998] for warm-season turfgrasses (WS). For CS, between-year variation was greater than differences within years, but for WS, within-year differences were greater than between years. A quadratic function was used to model the trend in KC. For CS, KC differed among years, with similar trends in 1998 and 1999. Generally, values for CS ranged from 0.76 to 0.95 and for WS from 0.68 to 0.76. We were unable to establish a clear trend that would group both CS and WS into high water use versus low water use. If a variable KC based on our models had been applied during the 3-year period, irrigation amounts would have been reduced by approximately 10% for CS and by 15% for WS when compared to a constant KC.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agj2.70080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genotype by environment interaction in sesame germplasm in Mexico 墨西哥芝麻种质资源的环境互作基因型研究

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-05-21 DOI: 10.1002/agj2.70077

Romualdo Vásquez-Ortiz, Rocío Toledo-Aguilar, Fernando Castillo-González, Hilda Victoria Silva-Rojas, Ricardo Lobato-Ortiz, Ignacio Benítez-Riquelme

{"title":"Genotype by environment interaction in sesame germplasm in Mexico","authors":"Romualdo Vásquez-Ortiz, Rocío Toledo-Aguilar, Fernando Castillo-González, Hilda Victoria Silva-Rojas, Ricardo Lobato-Ortiz, Ignacio Benítez-Riquelme","doi":"10.1002/agj2.70077","DOIUrl":"10.1002/agj2.70077","url":null,"abstract":"In Mexico, sesame (Sesamum indicum L.) is cultivated in rainfed environments with high temperatures and erratic precipitation. In these environments, there is low productivity due to the low availability of improved varieties; however, there is genetic diversity that can be used in programs for crop improvement. The objectives were to evaluate the grain yield per hectare (GY), variables associated with it, and the genotype × environment interaction (G × EI) in 50 sesame genotypes in four environments; these environments were integrated by Iguala and Zicapa in the spring–summer cycles 2021 and 2022 in Guerrero, Mexico; an alpha lattice design with three repetitions was used. The following analyses were conducted: combined analysis of variance, multivariate additive main effects and multiplicative interaction (AMMI), stability analysis, and Biplot G + G × EI. The combined analysis detected significant differences (p ≤ 0.01) for environment, genotype, and G × EI in every variable. The AMMI analysis showed greater variation in environment; the genotype component indicated 58.3% of variation of the GY and 24.8% of the G × EI. The coefficient of regression varied from 0.03 to 2.45, and the regression deviation was 0.03–0.26, with this indicating that the genotype had different responses to the environments. The Biplot G + G × EI with two components explained 80.75% of the variation in GY. The models and parameters used indicated that the Los_Hornos genotype (792.31 kg·ha−1) presented a better stability and GY classification, higher than the general average (569.9 kg·ha−1) and the improved control Calentana (591.85 kg·ha−1). Therefore, this genotype can have a significant impact on the genetic gain of GY for future sesame improvement programs.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-farm assessment and demonstration of best management practices for direct-seeded rice in Timor-Leste 东帝汶直接播种水稻最佳管理实践的农场评估和示范

IF 2 3区农林科学

Agronomy Journal Pub Date : 2025-05-19 DOI: 10.1002/agj2.70083

Yusaku Goto, Taisuke Egusa, Yuji Yamasaki, Virender Kumar, Takeshi Sato, Yoichiro Kato

{"title":"On-farm assessment and demonstration of best management practices for direct-seeded rice in Timor-Leste","authors":"Yusaku Goto, Taisuke Egusa, Yuji Yamasaki, Virender Kumar, Takeshi Sato, Yoichiro Kato","doi":"10.1002/agj2.70083","DOIUrl":"10.1002/agj2.70083","url":null,"abstract":"Direct-seeded rice (Oryza sativa) cultivation (DSR) is gradually replacing transplanted rice cultivation (TPR) across tropical Asia owing to labor shortages. However, the yields in DSR are lower than those in TPR under current farmer practices (FPs). It would be useful to introduce best management practices (BMPs), holistic technology packages prepared by researchers and extension staff, to improve DSR yield. We aimed at quantifying the effect of BMPs application on the on-farm yield, input factors (labor requirements and production costs), and cost–benefit performance of DSR and comparing it with the results of TPR. On-farm trials were conducted for 2 years in Timor-Leste (East Timor) and categorized farmers into a 2 × 2 experimental design: farmers who used FPs in DSR, BMPs in DSR, FPs in TPR, or BMPs in TPR. There were no significant yield differences between DSR and TPR under BMPs (3.5 vs. 3.6 t ha−1), but DSR produced a 20% lower yield than TPR under FPs (2.4 vs. 3.0 t ha−1). Yield increases due to BMPs were greater in DSR (+46%) than in TPR (+20%). The benefit–cost ratio of BMPs in DSR was 21% higher than that of BMPs in TPR (1.48 vs. 1.22). DSR farmers can achieve yields similar to those of TPR farmers by applying BMPs, with less labor and lower production costs, even where subsistence farming prevails. The effects of BMPs on DSR and TPR in this study suggest that the BMPs could improve land and labor productivities through DSR in tropical agricultural development programs.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":"117 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agj2.70083","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0