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Bridging barriers and solutions for better climate-adapted agriculture in low- and middle-income countries 为中低收入国家更好地适应气候变化的农业消除障碍并找到解决办法
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-11-14 DOI: 10.1002/ael2.70040
I. G. S. S. Ekanayaka, K. M. L. B. Kulasekara, H. K. S. de Zoysa, Akila Harishchandra, T. C. Bamunuarachchige

Conflict between agriculture and climate change has long existed, resulting in chronic stresses in farming communities, particularly in low- and middle-income countries (LMICs). This commentary provides an overview of current limitations in plans to address climate change in agriculture of LMICs and suggests modern approaches and integrated solutions to overcome impediments. Five major limitations were identified: lack of reliable climate data, limited technical capacity to predict future climate conditions, limited capacity to design climate-resilient crops, lack of societal awareness of climate injustice, and slow process to identify climate-vulnerable groups in LMICs. Three broad-scale recommendations in the LMIC context could be improved climate monitoring, building capacity for scientific analyses of crop responses to climate stressors at both physiological and molecular levels, and improving climate adaptation with vulnerable farming communities. Integration of state-of-the-art technologies to combat climate injustices is imperative for the agrarian communities of LMICs.

Core Ideas

  • Climate change is detrimental to agriculture, including low- and middle-income countries (LMICs).
  • Modern solutions are required to tackle the climate crisis in LMICs.
  • Climate action plans for agriculture and food systems in LMICs should be validated and updated.
  • Five limitations and three broad-scale solutions were identified.
农业与气候变化之间的冲突长期存在,导致农业社区长期面临压力,特别是在低收入和中等收入国家(LMICs)。本评论概述了目前应对中低收入国家农业气候变化计划的局限性,并提出了克服障碍的现代方法和综合解决方案。确定了五个主要限制:缺乏可靠的气候数据,预测未来气候条件的技术能力有限,设计气候适应型作物的能力有限,缺乏对气候不公正的社会意识,以及确定中低收入国家气候脆弱群体的过程缓慢。在低收入和中等收入国家背景下,可以提出三项广泛的建议:改进气候监测、在生理和分子水平上建设作物对气候胁迫反应的科学分析能力、以及改善脆弱农业社区的气候适应。对于中低收入国家的农业社区来说,整合最先进的技术来应对气候不公正是必不可少的。气候变化对农业,包括对低收入和中等收入国家(LMICs)的农业是有害的。应对中低收入国家的气候危机需要现代解决方案。应对中低收入国家农业和粮食系统的气候行动计划进行验证和更新。确定了五个限制和三个广泛的解决方案。
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引用次数: 0
Correction to “Interaction of organic nitrogen and C/N ratio enhances soil microarthropod abundance” 对“有机氮和碳氮比的相互作用提高土壤微节肢动物丰度”的修正
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-10-28 DOI: 10.1002/ael2.70039

Haque, M. A., Minemura, Y., Sazawa, K., Kuramitz, H., & Wada, N. (2025). Interaction of organic nitrogen and C/N ratio enhances soil microarthropod abundance. Agricultural & Environmental Letters, 10, e70034. https://doi.org/10.1002/ael2.70034

The third author's first name “Kazuto” was incorrectly listed as “Kazuo.” The correct spelling of the author's name is “Kazuto Sazawa” and has been corrected in both the byline and the Author Contributions’ section and also in the ORCID list at the end of the pdf version of the article.

We apologize for this error.

Haque, m.a., Minemura, Y., Sazawa, K., Kuramitz, H., & Wada, N.(2025)。有机氮和碳氮比的相互作用增强了土壤微节肢动物的丰度。农业与环境学报,10,(1):397 - 397。https://doi.org/10.1002/ael2.70034The第三作者的名字“Kazuto”被错误地列为“Kazuo”。作者名字的正确拼写是“Kazuto saazawa”,并且在署名和作者贡献部分以及pdf版本文章末尾的ORCID列表中都进行了更正。我们为这个错误道歉。
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引用次数: 0
Exploring rates and timing of new agricultural practices with the ADOPT tool 利用ADOPT工具探索新农业实践的比率和时机
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-10-23 DOI: 10.1002/ael2.70038
Anna M. Raffeld, Emily E. Oldfield, Alison J. Eagle, Cyril Melikov, Doria R. Gordon

As interest in the impact of climate-smart agricultural practices grows, it is increasingly important to understand how much practice adoption to expect, how long it will take for certain practices to be adopted, and where adoption of these practices may be most likely. Many current mitigation potential estimates for climate-smart agricultural practices assume instantaneous, 100% adoption of practices across all croplands, failing to reflect realistic conditions. However, tools like the Adoption Diffusion Outcome Prediction Tool (ADOPT) can help explain and clarify practice adoption dynamics and therefore right-size mitigation potential estimates. Here, we reviewed and compiled papers that reported ADOPT-derived predicted peak adoption rates (PPAR) and predicted time to peak (PTTP) adoption for various agricultural innovation types. We summarize PPAR and PTTP across innovations and farmer motivations, providing insights on practice adoption and highlighting the utility of understanding predicted adoption rates and timing of agricultural innovations.

随着人们对气候智慧型农业实践影响的兴趣日益增长,越来越重要的是要了解预计采用多少实践,采用某些实践需要多长时间,以及最有可能采用这些实践的地方。目前对气候智能型农业实践的许多缓解潜力估计都假设所有农田都能立即100%采用这些实践,未能反映现实情况。然而,像采用扩散结果预测工具(ADOPT)这样的工具可以帮助解释和澄清实践采用动态,从而正确估计缓解潜力的大小。在此,我们回顾并整理了基于adopt的各种农业创新类型的预测峰值采用率(PPAR)和预测峰值采用率(PTTP)的论文。我们总结了创新和农民动机方面的PPAR和PTTP,提供了实践采用的见解,并强调了理解预测采用率和农业创新时机的效用。
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引用次数: 0
Shifting dry spells in Central Chile: Implications for agricultural water planning 智利中部不断变化的干旱期:对农业用水规划的影响
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-10-22 DOI: 10.1002/ael2.70037
Daniela Latoja, Diego Rivera, Mario Lillo, Álex Godoy-Faúndez

Chile's agricultural production occurs in a highly variable Mediterranean climate and faces declining annual precipitation trends as well as growing competition from other uses. Water availability for agriculture depends on winter precipitation; however, a more even distribution of precipitation throughout the year would better support agricultural planning and management. We examine the occurrence, frequency, and trends of dry spells in Central Chile (32°–40° S) as a proxy for changes in the timing of dry-wet seasons, using a gridded daily precipitation dataset spanning the period from 1960 to 2021. Our results indicate a significant increase in dry spells (+1 event/decade), but shorter (−2 days/event), and a significant decrease in precipitation per wet spell (−2 mm/event/decade). Findings suggest that changes in dry spells should also be considered in planning and policy, as some regions may be experiencing water shortages due to shifts in timing and access, rather than simply having less water.

Core Ideas

  • Changes in the length and timing of dry and wet spells impact seasonal precipitation.
  • Changes in dry spells introduce more uncertainty to agricultural planning in Central Chile.
  • Dry spells analysis complements other annual precipitation deficit indices.
智利的农业生产发生在一个高度多变的地中海气候中,面临着年降水量下降的趋势以及来自其他用途的日益激烈的竞争。农业用水供应取决于冬季降水;然而,全年更均匀的降水分布将更好地支持农业规划和管理。我们研究了智利中部(32°-40°S)干旱期的发生、频率和趋势,以此作为干湿季节时间变化的代表,使用了1960年至2021年期间的网格化日降水数据集。我们的研究结果表明,干旱期显著增加(+1事件/ 10年),但缩短(- 2天/事件),每个湿期的降水量显著减少(- 2毫米/事件/ 10年)。研究结果表明,在规划和政策中也应该考虑干旱期的变化,因为一些地区可能由于时间和获取途径的变化而经历水资源短缺,而不仅仅是水资源减少。干湿期的长度和时间的变化会影响季节性降水。干旱期的变化给智利中部的农业规划带来了更多的不确定性。干旱期分析补充了其他年度降水亏缺指数。
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引用次数: 0
Quantifying microplastics in environmental waters: Mass concentrations are superior to abundance 定量环境水体中的微塑料:质量浓度优于丰度
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-10-07 DOI: 10.1002/ael2.70031
Pamela J. Rice, Gary W. Feyereisen, Brent J. Dalzell, Lara E. Frankson, Claire B. Simmerman, Todd W. Schumacher, Rob W. Malone, Mark R. Williams, Kevin W. King

Microplastics are contaminants of global concern that are primarily studied in marine and urban environments. Understanding of microplastics in drained agricultural watersheds is lacking. We aimed to evaluate microplastics in ditch and tile drainage water through periodic sampling. Water samples were filtered to capture particulates that were digested to remove organics, then stained and evaluated using fluorescence microscopy and image analysis. Further, we compared and contrasted microplastic abundance, the current reporting standard, with microplastic mass concentration, often unreported, to determine the most accurate assessment. Open-ditch drainage had greater microplastic contamination than drainpipe outlets. Agricultural drainage contained 2–6 orders of magnitude less mass concentrations of microplastics than sampled urban surface waters and laundry graywater. However, when evaluated by abundance, the difference was not apparent. These findings improve our understanding of microplastics in agricultural watersheds and demonstrate the importance of evaluating microplastic contamination based on mass concentrations for accurate assessments.

Core Ideas

  • Mass concentration (ng/L) is a better predictor of microplastic contamination than abundance (counts/L).
  • Agricultural drainage water had lower microplastic mass concentrations than surface water or laundry graywater.
  • Open-ditch drainage had greater microplastic contamination than drainpipe outlets.
  • Mass of microplastic pieces from smallest to largest: drainage water < river water < lake water = laundry water.
微塑料是全球关注的污染物,主要在海洋和城市环境中进行研究。人们对排水农业流域的微塑料缺乏了解。我们旨在通过定期取样来评估沟渠和瓦片排水中的微塑料。对水样进行过滤以捕获被消化以去除有机物的颗粒,然后使用荧光显微镜和图像分析进行染色和评估。此外,我们将微塑料丰度(目前的报告标准)与微塑料质量浓度(通常未报告)进行了比较和对比,以确定最准确的评估。明沟排水的微塑料污染高于排水管出口。农业排水中微塑料的质量浓度比城市地表水和洗衣灰水低2-6个数量级。然而,当以丰度来评估时,差异并不明显。这些发现提高了我们对农业流域微塑料的理解,并证明了基于质量浓度评估微塑料污染的重要性。质量浓度(ng/L)比丰度(counts/L)更能预测微塑料污染。农业排水的微塑料质量浓度低于地表水和洗衣房灰水。明沟排水的微塑料污染高于排水管出口。微塑料碎片的质量从小到大:排水&河水&湖水=洗衣水。
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引用次数: 0
Interaction of organic nitrogen and C/N ratio enhances soil microarthropod abundance 有机氮和碳氮比的相互作用增强了土壤微节肢动物的丰度
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-09-30 DOI: 10.1002/ael2.70034
Md Ariful Haque, Yuto Minemura, Kazuo Sazawa, Hideki Kuramitz, Naoya Wada

Organic management is widely regarded as an effective strategy to prevent soil degradation in agroecosystems. In this study, we investigated the abundance of soil microarthropods in a multi-cropping system by comparing organic and conventional management practices. A total of 189 soil samples were collected from 63 agricultural sites cultivating three crops: paddy rice (Oryza sativa L.), soybeans [Glycine max (L.) Merrill], and vegetables [Cucurbita moschata (Duch.) Poir., Solanum melongena L., etc.]. An averaged generalized linear mixed model revealed that both organic management and vegetable cropping were associated with significantly higher microarthropod abundance. We also detected a positive interaction between the soil carbon-to-nitrogen ratio and organic nitrogen content, indicating that organically enriched soils provide favorable conditions for microarthropods. Our findings demonstrate that agricultural management practices, cropping systems, and soil nutrient profiles collectively shape the abundance of soil microarthropods.

有机管理被广泛认为是防止农业生态系统土壤退化的有效策略。在本研究中,我们通过比较有机和常规管理方式,调查了复作制度下土壤微节肢动物的丰度。从63个种植水稻(Oryza sativa L.)、大豆(Glycine max (L.))和大豆(Oryza sativa L.)三种作物的农业地点共收集了189份土壤样品。和蔬菜[葫芦(荷兰)]。Poir。、茄类等[j]。平均广义线性混合模型显示,有机管理和蔬菜种植均与较高的微节肢动物丰度相关。土壤碳氮比与有机氮含量之间存在正交互作用,表明有机富集的土壤为微节肢动物提供了有利条件。我们的研究结果表明,农业管理实践、种植制度和土壤养分剖面共同决定了土壤微节肢动物的丰度。
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引用次数: 0
Establishing a spatially explicit monitoring system for phosphorus use efficiency for crop fields 建立农田磷利用效率空间显式监测系统
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-08-29 DOI: 10.1002/ael2.70032
Kabindra Adhikari, Douglas R. Smith, Chad Hajda

We evaluated a geospatially explicit phosphorus (P) use efficiency (PUE) monitoring method in crop fields using proximal sensing, field observations, and machine learning. Corn (Zea mays L.) yield and grain protein content were measured using an Ag Leader yield monitor and a CropScan sensor near Riesel, Texas. Topsoil P (0–15 cm) and grain P levels were analyzed for samples collected at strategic field locations. A random forest model was trained to predict PUE using soil electrical conductivity (ECa) from a Veris instrument and topographic variables as predictors (R2 = 0.78, root mean squared error = 0.01). CropScan sensor effectively estimated grain P content, supporting field-wide PUE upscaling. ECa and elevation were the primary drivers of PUE variation. The resulting maps are valuable for monitoring PUE in crop fields and guiding variable-rate fertilizer applications. This scalable approach provides a robust framework for monitoring nutrient dynamics and efficiency, informing precision management strategies to enhance yield and sustainability in crop production systems.

我们利用近端传感、现场观测和机器学习技术,评估了一种地理空间明确的作物田磷(P)利用效率(PUE)监测方法。在德克萨斯州Riesel附近,使用Ag Leader产量监测器和CropScan传感器测量了玉米(Zea mays L.)的产量和籽粒蛋白质含量。分析了在农田战略位置采集的样品的表层土壤磷(0-15 cm)和粮食磷水平。利用Veris仪器的土壤电导率(ECa)和地形变量作为预测因子,训练随机森林模型预测PUE (R2 = 0.78,均方根误差= 0.01)。CropScan传感器可有效估算籽粒磷含量,支持全田PUE升级。ECa和海拔升高是PUE变化的主要驱动因素。所得到的地图对于监测作物田间PUE和指导可变速率施肥具有重要价值。这种可扩展的方法为监测养分动态和效率提供了一个强大的框架,为精确管理战略提供信息,以提高作物生产系统的产量和可持续性。
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引用次数: 0
Does growing latitude influence soybean seed critical amino acid content? A meta-analysis 生长纬度对大豆种子关键氨基酸含量有影响吗?一个荟萃分析
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-08-29 DOI: 10.1002/ael2.70033
Prabath Senanayaka Mudiyanselage, Laura E. Lindsey, Seun O. Oladipupo

Soybean [Glycine max (L.) Merr.] seed critical amino acid (CAA) content is a key quality factor for buyers worldwide, yet its spatial variability remains unclear. This study evaluated the correlation between growing latitude and CAA content in soybean seed using published data. Pearson's r values were extracted, converted to Fisher's Z as an effect-size metric, and analyzed using a random-effects model. Lysine, cystine, methionine, and tryptophan showed no significant correlations, while threonine exhibited a significant negative correlation with absolute latitude (Z = −0.50, p = 0.04). Subgroup analysis revealed additional significant correlations for lysine in soybean meal (Z = −0.74, p = 0.04) and for threonine (chemical methods to measure CAAs: Z = −0.58, p = 0.03; studies conducted outside the United States: Z = −0.78, p = 0.02). The absence of consistent correlations across multiple soybean-growing regions worldwide suggests that latitude alone should not determine a buyer's purchasing decision regarding soybean CAA content.

大豆[甘氨酸max (L.)]稳定。种子关键氨基酸(CAA)含量是全球买家的关键品质因素,但其空间差异尚不清楚。本研究利用已发表的数据评估了大豆种子生长纬度与CAA含量之间的相关性。提取Pearson的r值,转换为Fisher的Z值作为效应大小度量,并使用随机效应模型进行分析。赖氨酸、胱氨酸、蛋氨酸和色氨酸与绝对纬度无显著相关,苏氨酸与绝对纬度呈显著负相关(Z = - 0.50, p = 0.04)。亚组分析显示豆粕中的赖氨酸(Z = - 0.74, p = 0.04)和苏氨酸(测量CAAs的化学方法:Z = - 0.58, p = 0.03;在美国以外进行的研究:Z = - 0.78, p = 0.02)之间存在显著相关性。全球多个大豆种植区之间缺乏一致的相关性表明,纬度本身不应决定买方对大豆CAA含量的购买决定。
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引用次数: 0
Distinct phosphorus release from fresh and legacy biosolids-amended sandy soils 不同的磷释放从新鲜和遗留的生物固体修正沙质土壤
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-08-10 DOI: 10.1002/ael2.70030
Yang Lin, Isabella D. Brush, JoAnn B. Donald, Me'Keila A. Lightfoot, Todd Z. Osborne, Rex Ellis, Andy Canion

Biosolids are commonly used as soil amendments; however, repeated application of biosolids results in phosphorus (P) accumulation, elevating environmental risks by increasing P loss through runoff and leaching. Predicting soil P loss after ceasing biosolids application remains challenging. In a laboratory experiment, 80 leaching events were applied to sandy soils with biosolids application histories from active use to 15 years post-application. Soils with recent applications showed an early peak in P release that later stabilized, while those with legacy applications exhibited lower but more consistent P release. These results suggest that fresh biosolids contained a highly mobile P fraction that depletes over time, leaving behind more fixed P that may persist for decades. These P release trajectories could be reasonably modeled by two-pool exponential decay models. Overall, these findings highlight the importance of biosolids aging in regulating P dynamics and identify the hot moments in P loss in biosolids-impacted systems.

生物固体通常用作土壤改良剂;然而,反复施用生物固体会导致磷(P)积累,通过径流和淋滤增加P的损失,从而增加环境风险。停止施用生物固体后预测土壤磷流失仍然具有挑战性。在一项实验室实验中,80个浸出事件应用于沙质土壤,这些土壤具有生物固体应用历史,从积极使用到应用后15年。最近施用的土壤磷素释放在早期达到峰值,随后趋于稳定,而遗留施用的土壤磷素释放较低但较为稳定。这些结果表明,新鲜的生物固体含有高度流动的磷组分,随着时间的推移会耗尽,留下更多的固定磷,可能会持续数十年。这些P释放轨迹可以用双池指数衰减模型合理地模拟。总的来说,这些发现强调了生物固体老化在调节磷动力学中的重要性,并确定了生物固体影响系统中磷损失的热点时刻。
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引用次数: 0
Managing cover crop mixtures over a decade via species replacement and seeding rate adjustment 通过物种替换和播种率调整管理覆盖混合作物超过十年
IF 3.6 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2025-08-06 DOI: 10.1002/ael2.70029
Sheryl C. Hosler, Ebony G. Murrell, Kathleen E. Arrington, Bàrbara Baraibar, Mary E. Barbercheck, Brosi A. Bradley, Mac Burgess, Denise M. Finney, Mitchell C. Hunter, James C. LaChance, David A. Mortensen, Charles M. White, Carolyn J. Lowry, Jason P. Kaye

Cover crop mixtures provide ecosystem services, but species’ relative abundance in mixtures is challenging to manage. We report on an 11-year experiment where our main objective was to use species selection and seeding rate adjustments over time to increase the evenness of mixtures. Replacing rye with triticale and red clover with crimson clover while adjusting seeding rates resulted in mixtures that were more even and closer to the desired composition (greater legume biomass) than the original communities. For example, the first version of a six-species mixture produced biomass composed of 81% grass, 5% brassica, and 14% legume, but after adjustments, subsequent versions contained 25% grass, 10% brassica, and 65% legume biomass. Substituting a less aggressive grass for a dominant grass and a more aggressive legume for a weaker legume better balanced the mixture to meet farmers’ ecosystem service goals, as did reducing the proportion of grass seed in the mixtures.

覆盖作物混合物提供了生态系统服务,但混合物中物种的相对丰度难以管理。我们报告了一项为期11年的实验,我们的主要目标是利用物种选择和播种率随时间的调整来增加混合物的均匀性。用小黑麦代替黑麦,用深红色三叶草代替红三叶草,同时调整播种率,结果混合物比原始群落更均匀,更接近所需的组成(豆科植物生物量更大)。例如,六种混合物的第一个版本产生的生物量由81%的草、5%的芸苔和14%的豆科组成,但经过调整后,随后的版本含有25%的草、10%的芸苔和65%的豆科生物量。用一种攻击性较弱的草代替一种优势草,用一种攻击性较强的豆科植物代替一种较弱的豆科植物,更好地平衡了混合物,以满足农民的生态系统服务目标,减少混合物中草籽的比例也是如此。
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引用次数: 0
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Agricultural & Environmental Letters
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