European Journal of Agronomy最新文献_第5页

Can regenerative agriculture enhance productivity, profitability, and reduce C emissions? A case study in Andean potato farming 可再生农业能提高生产力、盈利能力并减少碳排放吗？安第斯马铃薯种植案例研究

IF 5.5 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-04-01 Epub Date: 2026-01-26 DOI: 10.1016/j.eja.2026.128020

Percy Briceño , Johan Ninanya , Juan F. Seminario , Ronal Otiniano , Javier Rinza , Carlos Mestanza , Enner Arias , Cristian Villanueva , Wilson Mendoza , Felipe de Mendiburu , Jan F. Kreuze , David A. Ramírez

Andean agriculture faces several challenges, such as land use changes, land degradation, poverty, extreme events, and climate change. Such conditions compromise food production and security, highlighting the need to explore sustainable alternatives. This two-trial study evaluated the short-term performance of regenerative agricultural practices for potato production in the Peruvian Andes over two seasons (2022–2024), in terms of productivity (FTY: Fresh tuber yield), profitability (BCR: Benefit-cost ratio), C footprint (CF), and soil properties. One trial (Trial 1) tested tillage practices—minimum (MT) vs. zero (ZT); plastic barriers—with (wPB) vs. without (nPB); and mulch thicknesses—0.1 (M10) vs. 0.2 (M20) vs. 0.3 (M30) m. The other trial (Trial 2) tested cropping systems—monoculture (MO) vs. intercropping with faba bean (IN); a fungicide optimization tool—with (wDK) vs. without (nDK); and chicken manure doses—1 (CM1) vs. 2 (CM2) vs. 4 (CM4) t ha⁻¹ . Compared to conventional practices, numerically MT+nPB+M30 increased FTY by ∼3.5 % and reduced CF by 19.9 % in Trial 1, while MO+wDK+CM4 increased FTY and BCR by 28 % and 12.4 %, respectively, in Trial 2. ZT and IN performed poorly in the short-term under Andean conditions, highlighting the need for long-term studies. In both trials, the short-term effect of regenerative practices improved soil organic matter with a mixed impact on pH. Regenerative practices in the Andes offer synergies and trade-offs, but integrating reduced tillage, mulching, and organic fertilization can enhance sustainability without lowering productivity. Long-term adoption is essential to restore soil carbon stocks, improve sustainability, and increase the resilience of Andean agriculture.

安第斯农业面临着若干挑战，如土地利用变化、土地退化、贫困、极端事件和气候变化。这种情况危及粮食生产和安全，突出表明需要探索可持续的替代方案。这项两项试验研究评估了秘鲁安第斯山脉两个季节（2022-2024）马铃薯生产的再生农业实践的短期绩效，包括生产力（新鲜块茎产量）、盈利能力（效益-成本比）、碳足迹（CF）和土壤性质。一项试验（试验1）测试了最少（MT）和零（ZT）耕作方法；塑料屏障——有（wPB）和没有（nPB）；覆盖厚度——0.1 (M10) vs. 0.2 (M20) vs. 0.3 (M30) m。另一个试验（试验2）测试了种植系统——单作（MO） vs.间作蚕豆（IN）；杀菌剂优化工具——含（wDK）与不含（nDK）；和鸡粪剂量- 1 (CM2) vs. 2 (CM2) vs. 4 （CM4）。与常规做法相比，在试验1中，MT+nPB+M30在数值上使FTY增加了~ 3.5 %，CF减少了19.9 %，而在试验2中，MO+wDK+CM4分别使FTY和BCR增加了28 %和12.4 %。ZT和IN在安第斯条件下短期表现不佳，突出了长期研究的必要性。在这两项试验中，再生实践的短期效果改善了土壤有机质，但对ph值的影响是混合的。安第斯山脉的再生实践提供了协同效应和权衡，但将减少耕作、覆盖和有机施肥结合起来可以在不降低生产力的情况下提高可持续性。长期采用对恢复土壤碳储量、提高可持续性和增强安第斯农业的复原力至关重要。

{"title":"Can regenerative agriculture enhance productivity, profitability, and reduce C emissions? A case study in Andean potato farming","authors":"Percy Briceño , Johan Ninanya , Juan F. Seminario , Ronal Otiniano , Javier Rinza , Carlos Mestanza , Enner Arias , Cristian Villanueva , Wilson Mendoza , Felipe de Mendiburu , Jan F. Kreuze , David A. Ramírez","doi":"10.1016/j.eja.2026.128020","DOIUrl":"10.1016/j.eja.2026.128020","url":null,"abstract":"<div><div>Andean agriculture faces several challenges, such as land use changes, land degradation, poverty, extreme events, and climate change. Such conditions compromise food production and security, highlighting the need to explore sustainable alternatives. This two-trial study evaluated the short-term performance of regenerative agricultural practices for potato production in the Peruvian Andes over two seasons (2022–2024), in terms of productivity (FTY: Fresh tuber yield), profitability (BCR: Benefit-cost ratio), C footprint (CF), and soil properties. One trial (Trial 1) tested tillage practices—minimum (MT) <em>vs.</em> zero (ZT); plastic barriers—with (wPB) <em>vs.</em> without (nPB); and mulch thicknesses—0.1 (M10) <em>vs.</em> 0.2 (M20) <em>vs.</em> 0.3 (M30) m. The other trial (Trial 2) tested cropping systems—monoculture (MO) <em>vs.</em> intercropping with faba bean (IN); a fungicide optimization tool—with (wDK) <em>vs.</em> without (nDK); and chicken manure doses—1 (CM1) <em>vs.</em> 2 (CM2) <em>vs.</em> 4 (CM4) t ha⁻¹ . Compared to conventional practices, numerically MT+nPB+M30 increased FTY by ∼3.5 % and reduced CF by 19.9 % in Trial 1, while MO+wDK+CM4 increased FTY and BCR by 28 % and 12.4 %, respectively, in Trial 2. ZT and IN performed poorly in the short-term under Andean conditions, highlighting the need for long-term studies. In both trials, the short-term effect of regenerative practices improved soil organic matter with a mixed impact on pH. Regenerative practices in the Andes offer synergies and trade-offs, but integrating reduced tillage, mulching, and organic fertilization can enhance sustainability without lowering productivity. Long-term adoption is essential to restore soil carbon stocks, improve sustainability, and increase the resilience of Andean agriculture.</div></div>","PeriodicalId":51045,"journal":{"name":"European Journal of Agronomy","volume":"175 ","pages":"Article 128020"},"PeriodicalIF":5.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

No-tillage with straw mulching practices improved the lodging resistance of maize and yield in semi-arid areas 免耕秸秆覆盖提高了半干旱区玉米的抗倒伏能力和产量

IF 5.5 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.eja.2026.127983

Jia Wang , Jun Fan , Zizhuang Ye , Fuqiang Wei , Mingde Hao

Lodging risk is closely related to yield potential, especially in semi-arid agricultural ecosystems, where achieving sustainable development and increasing food production without increasing lodging risk is a key challenge. However, research on how different tillage practices affect maize lodging risk and yield potential remains limited. This study, based on a long-term field experiment established in 2004 in the Loess Plateau of China, investigates the effects of conventional tillage (CT), no-tillage (NT), no-tillage with straw mulching (NTS), and no-tillage with straw mulching in alternating wide and narrow rows (NTSR) on soil physical properties, agronomic traits, lodging, and yield from 2022 to 2024. The aim is to identify key factors affecting maize lodging and yield. The results indicate that compared to CT, NT, NTS, and NTSR significantly increased soil water. NTS and NTSR significantly improved the saturated hydraulic conductivity (Ks) in the 0–40 cm soil layer. In the same soil layer, NT significantly increased soil bulk density (BD) and soil compaction (SC), while reducing Ks. During the key growth stages of maize, the canopy height, leaf area index (LAI), above-ground biomass (AGB), and root growth under NTS and NTSR were all significantly greater than under CT (P < 0.05). However, the root morphology at the 0–100 cm depth under NT was significantly lower than that under CT (P < 0.05). Additionally, NTS and NTSR significantly reduced the center of gravity (CG), ear height coefficient (EHC), and internode length (LTI), while increasing the root-shoot ratio (RSR), third internode diameter (SDTI), internode breaking strength (IBS), bending strength (BS), and stem lodging resistance index (SLRI) (P < 0.05), which effectively reduced lodging rates. Random forest analysis indicated that soil water, IBS, BS, and LAI are the key factors affecting lodging. Compared to CT, NTS and NTSR significantly increased grain yield (by 16.8 % and 11.1 %, respectively) and 100-grain weight (by 6.8% and 4.5 %, respectively). Overall, NTS and NTSR improved soil water, soil physical properties, and the third internode traits of maize, achieving higher maize grain yield and lodging resistance. These findings provide valuable theoretical support for the sustainable development of rainfed agricultural areas similar to the Loess Plateau.

倒伏风险与产量潜力密切相关，特别是在半干旱农业生态系统中，在不增加倒伏风险的情况下实现可持续发展和增加粮食产量是一项关键挑战。然而，不同耕作方式对玉米倒伏风险和产量潜力的影响研究仍然有限。本研究基于2004年在黄土高原开展的长期田间试验，研究了2022 - 2024年常规耕作（CT）、免耕（NT）、免耕秸秆覆盖（NTS）和免耕秸秆窄带交替行（NTSR）对土壤物理性状、农艺性状、倒伏和产量的影响。目的是确定影响玉米倒伏和产量的关键因素。结果表明，与连续施肥相比，新灌丛、新灌丛和新灌丛显著增加了土壤水分。NTS和NTSR显著提高了0 ~ 40 cm土层的饱和水导率（Ks）。在同一土层中，硝态氮显著提高了土壤容重（BD）和土壤压实（SC），降低了土壤钾含量。在玉米生长关键期，NTS和NTSR处理下的冠层高度、叶面积指数（LAI）、地上生物量（AGB）和根系生长均显著大于CT处理（P <； 0.05）。而NT处理下0 ~ 100 cm深度根部形态显著低于CT处理（P <； 0.05）。此外，NTS和NTSR显著降低了植株的重力中心（CG）、穗高系数（EHC）和节间长（LTI），提高了根冠比（RSR）、第三节间直径（SDTI）、节间断裂强度（IBS）、弯曲强度（BS）和茎抗倒伏指数（SLRI）（P <； 0.05），有效降低了倒伏率。随机森林分析表明，土壤水分、IBS、BS和LAI是影响倒伏的关键因素。与CT相比，NTS和NTSR显著提高了籽粒产量（分别提高16.8% %和11.1 %）和百粒重（分别提高6.8%和4.5 %）。总体而言，NTS和NTSR改善了土壤水分、土壤物理性质和玉米第三节间性状，提高了玉米产量和抗倒伏能力。这些发现为类似黄土高原的旱作农业区的可持续发展提供了有价值的理论支持。

{"title":"No-tillage with straw mulching practices improved the lodging resistance of maize and yield in semi-arid areas","authors":"Jia Wang , Jun Fan , Zizhuang Ye , Fuqiang Wei , Mingde Hao","doi":"10.1016/j.eja.2026.127983","DOIUrl":"10.1016/j.eja.2026.127983","url":null,"abstract":"<div><div>Lodging risk is closely related to yield potential, especially in semi-arid agricultural ecosystems, where achieving sustainable development and increasing food production without increasing lodging risk is a key challenge. However, research on how different tillage practices affect maize lodging risk and yield potential remains limited. This study, based on a long-term field experiment established in 2004 in the Loess Plateau of China, investigates the effects of conventional tillage (CT), no-tillage (NT), no-tillage with straw mulching (NTS), and no-tillage with straw mulching in alternating wide and narrow rows (NTSR) on soil physical properties, agronomic traits, lodging, and yield from 2022 to 2024. The aim is to identify key factors affecting maize lodging and yield. The results indicate that compared to CT, NT, NTS, and NTSR significantly increased soil water. NTS and NTSR significantly improved the saturated hydraulic conductivity (Ks) in the 0–40 cm soil layer. In the same soil layer, NT significantly increased soil bulk density (BD) and soil compaction (SC), while reducing Ks. During the key growth stages of maize, the canopy height, leaf area index (LAI), above-ground biomass (AGB), and root growth under NTS and NTSR were all significantly greater than under CT (P < 0.05). However, the root morphology at the 0–100 cm depth under NT was significantly lower than that under CT (P < 0.05). Additionally, NTS and NTSR significantly reduced the center of gravity (CG), ear height coefficient (EHC), and internode length (LTI), while increasing the root-shoot ratio (RSR), third internode diameter (SDTI), internode breaking strength (IBS), bending strength (BS), and stem lodging resistance index (SLRI) (P < 0.05), which effectively reduced lodging rates. Random forest analysis indicated that soil water, IBS, BS, and LAI are the key factors affecting lodging. Compared to CT, NTS and NTSR significantly increased grain yield (by 16.8 % and 11.1 %, respectively) and 100-grain weight (by 6.8% and 4.5 %, respectively). Overall, NTS and NTSR improved soil water, soil physical properties, and the third internode traits of maize, achieving higher maize grain yield and lodging resistance. These findings provide valuable theoretical support for the sustainable development of rainfed agricultural areas similar to the Loess Plateau.</div></div>","PeriodicalId":51045,"journal":{"name":"European Journal of Agronomy","volume":"175 ","pages":"Article 127983"},"PeriodicalIF":5.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Assessing organic substitution thresholds in smallholder farms: Results from a 34-year experiment on crop—livestock integration systems 评估小农农场的有机替代阈值：来自34年作物-牲畜一体化系统实验的结果

IF 5.5 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-04-01 Epub Date: 2026-01-28 DOI: 10.1016/j.eja.2026.128023

Yu Ning , Shuai-lin Li , Xin-hui Zhang , Zhu-qing Xia , Yun Gao , Lu Sun , Qiang Ma , Wan-tai Yu

Organic fertilizer (OGF) plays a crucial role in reducing chemical fertilizer application and mitigating agricultural pollution. However, the maximum resource availability and nutrient recovery efficiency of OGF in smallholder farming systems remain unclear. Based on a 34-year long-term experiment in Northeast China, we assessed organic potential substitution ratio (ORR) thresholds under two organic conversion models (maize-pig farming (MPF) model and maize-aerobic composting (MAC) model) across four combined OGF and mineral fertilizer treatments (OGF, N + OGF, NP+OGF and NPK+OGF). We found that the combined application of organic and mineral fertilizer increased crop yields compared to the application of mineral fertilizer alone. MAC achieved significantly higher biomass and nutrient residue ratios than MPF. The maximum OGF biomass ranged from 1.5 to 2.6 Mg ha⁻¹ yr⁻¹ in MPF and from 1.7 to 3.3 Mg ha⁻¹ yr⁻¹ in MAC. The potential organic substitution ratio thresholds for N and P, respectively, were 37.5 % and 69.7 % in MPF, and 59.7 % and 89.3 % in MAC. The NPK+OGF treatment, which achieved these thresholds, represents the optimal fertilization regime developed in this study. Economically, MPF resulted in a maximum net benefit of US$ 6553.9 ha⁻¹ yr⁻¹, while that of MAC was US$ 315.4 ha⁻¹ yr⁻¹. On the basis of these findings, we recommend the development of context-specific organic cycling models tailored to smallholder farmers’ practical needs, the implementation of appropriate organic substitution strategies, and the expansion of organic waste management chains.

有机肥在减少化肥施用和减轻农业污染方面起着至关重要的作用。然而，小农农业系统中OGF的最大资源可用性和养分恢复效率尚不清楚。基于东北地区34年的长期试验，研究了四种OGF和矿肥组合处理（OGF、N + OGF、NP+OGF和NPK+OGF）下玉米-生猪（MPF）和玉米-好氧堆肥（MAC）两种有机转化模式下的有机潜在替代比（ORR）阈值。我们发现有机和矿肥配施比单独施用矿肥更能提高作物产量。与强积金相比，强积金的生物量和养分残留比显著高于强积金。在强MPF和MAC中，氮和磷的潜在有机替代率阈值分别为37.5% %和69.7% %，而在MAC中，氮和磷的潜在有机替代率阈值分别为59.7% %和89.3% %。NPK+OGF处理达到了这些阈值，代表了本研究开发的最佳施肥制度。在经济上，强积金的最大净效益为6553.9美元 ha−1年−1，而MAC的净效益为315.4美元 ha−1年−1。在此基础上，我们建议发展适合小农实际需求的有机循环模式，实施适当的有机替代策略，并扩大有机废物管理链。

{"title":"Assessing organic substitution thresholds in smallholder farms: Results from a 34-year experiment on crop—livestock integration systems","authors":"Yu Ning , Shuai-lin Li , Xin-hui Zhang , Zhu-qing Xia , Yun Gao , Lu Sun , Qiang Ma , Wan-tai Yu","doi":"10.1016/j.eja.2026.128023","DOIUrl":"10.1016/j.eja.2026.128023","url":null,"abstract":"<div><div>Organic fertilizer (OGF) plays a crucial role in reducing chemical fertilizer application and mitigating agricultural pollution. However, the maximum resource availability and nutrient recovery efficiency of OGF in smallholder farming systems remain unclear. Based on a 34-year long-term experiment in Northeast China, we assessed organic potential substitution ratio (ORR) thresholds under two organic conversion models (maize-pig farming (MPF) model and maize-aerobic composting (MAC) model) across four combined OGF and mineral fertilizer treatments (OGF, N + OGF, NP+OGF and NPK+OGF). We found that the combined application of organic and mineral fertilizer increased crop yields compared to the application of mineral fertilizer alone. MAC achieved significantly higher biomass and nutrient residue ratios than MPF. The maximum OGF biomass ranged from 1.5 to 2.6 Mg ha<sup>−1</sup> yr<sup>−1</sup> in MPF and from 1.7 to 3.3 Mg ha<sup>−1</sup> yr<sup>−1</sup> in MAC. The potential organic substitution ratio thresholds for N and P, respectively, were 37.5 % and 69.7 % in MPF, and 59.7 % and 89.3 % in MAC. The NPK+OGF treatment, which achieved these thresholds, represents the optimal fertilization regime developed in this study. Economically, MPF resulted in a maximum net benefit of US$ 6553.9 ha<sup>−1</sup> yr<sup>−1</sup>, while that of MAC was US$ 315.4 ha<sup>−1</sup> yr<sup>−1</sup>. On the basis of these findings, we recommend the development of context-specific organic cycling models tailored to smallholder farmers’ practical needs, the implementation of appropriate organic substitution strategies, and the expansion of organic waste management chains.</div></div>","PeriodicalId":51045,"journal":{"name":"European Journal of Agronomy","volume":"175 ","pages":"Article 128023"},"PeriodicalIF":5.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Model structure and data available for estimation affect uncertainty of genotype-specific parameter estimates 模型结构和可用于估计的数据影响基因型特异性参数估计的不确定性

IF 5.5 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-04-01 Epub Date: 2026-01-31 DOI: 10.1016/j.eja.2025.127968

Muhammad Zeeshan Mehmood , Phillip D. Alderman , Romulo P. Lollato , Amanda de Oliveira Silva

The substantial uncertainty in crop modeling undermines confidence in the results of crop models, so quantifying and understanding the sources of this uncertainty is a critical first step towards reducing it. Parameter uncertainty is a major source of overall uncertainty in crop models and a systematic analysis of the uncertainty in genotype-specific parameter (GSP) estimates is critical across different model structure (MS) and data available for estimation (DE) scenarios. This study was conducted to quantify the effects of MS and DE on the uncertainty in GSP estimates for wheat crop models. Different MS were created by combining each of the wheat crop models (CERES, CROPSM, and NWHEAT) with maximum evapotranspiration (ET_max) models (Priestley–Taylor and Standardized Short Crop Reference Evapotranspiration) and soil evaporation (SE) models (Ritchie and Suleiman Ritchie), all within the Decision Support System for Agrotechnology Transfer-Cropping Systems Model (DSSAT-CSM). Similarly, different DE consisted of various subsets (the whole dataset and 6 holdouts) of a winter wheat dataset from Oklahoma, United States. Overall, MS, DE, and MS:DE together explained 70% or greater proportion of variability in more than three-quarters of all the estimated parameters across all DSSAT-CSM Wheat models. However, if we compare each factor individually, MS explained 25% or greater proportion of variability in nearly two-thirds of all the estimated parameters across all DSSAT-CSM Wheat models. Each DSSAT-CSM Wheat model showed a unique pattern for the uncertainty in GSP estimates. Overall, the uncertainty in GSP estimates due to MS and DE scenarios exceeded prior expectations for most parameters across models. Our results suggest that care must be taken during GSP estimation when using different MS (especially based on same crop model but different ET_max and SE methods) and DE (especially under limited data availability). This is particularly important in the context of an ensemble modeling approach (when ensemble members include the same crop model with different ET_max and SE methods), which has been increasingly adopted for climate impact assessments.

作物模型中的大量不确定性破坏了对作物模型结果的信心，因此量化和理解这种不确定性的来源是减少不确定性的关键的第一步。参数不确定性是作物模型总体不确定性的主要来源，对基因型特异性参数（GSP）估计的不确定性进行系统分析对于不同模型结构（MS）和可用于估计（DE）情景的数据至关重要。本研究旨在量化质谱和DE对小麦作物模型GSP估计不确定性的影响。通过将每个小麦作物模型（CERES， CROPSM和NWHEAT）与最大蒸散发（ETmax）模型（Priestley-Taylor和标准化短茬作物参考蒸散发）和土壤蒸发（SE）模型（Ritchie和Suleiman Ritchie）结合起来创建不同的质谱，这些模型都在农业技术转移种植系统模型（DSSAT-CSM）的决策支持系统中。类似地，不同的DE由来自美国俄克拉荷马州的冬小麦数据集的不同子集（整个数据集和6个保留）组成。总体而言，MS、DE和MS:DE一起解释了所有DSSAT-CSM Wheat模型中超过四分之三的所有估计参数中70%或更大比例的变异性。然而，如果我们单独比较每个因素，在所有DSSAT-CSM小麦模型中，MS解释了近三分之二的所有估计参数中25%或更大比例的变异性。每种DSSAT-CSM小麦模型都显示出GSP估算不确定性的独特模式。总体而言，由于MS和DE情景导致的GSP估计的不确定性超过了模型中大多数参数的先前预期。我们的研究结果表明，在使用不同的MS（特别是基于相同作物模型但不同的ETmax和SE方法）和DE（特别是在有限的数据可用性下）估算GSP时必须小心。这在集成建模方法（当集成成员包括具有不同ETmax和SE方法的相同作物模型时）的背景下尤其重要，该方法已越来越多地用于气候影响评估。

{"title":"Model structure and data available for estimation affect uncertainty of genotype-specific parameter estimates","authors":"Muhammad Zeeshan Mehmood , Phillip D. Alderman , Romulo P. Lollato , Amanda de Oliveira Silva","doi":"10.1016/j.eja.2025.127968","DOIUrl":"10.1016/j.eja.2025.127968","url":null,"abstract":"<div><div>The substantial uncertainty in crop modeling undermines confidence in the results of crop models, so quantifying and understanding the sources of this uncertainty is a critical first step towards reducing it. Parameter uncertainty is a major source of overall uncertainty in crop models and a systematic analysis of the uncertainty in genotype-specific parameter (GSP) estimates is critical across different model structure (MS) and data available for estimation (DE) scenarios. This study was conducted to quantify the effects of MS and DE on the uncertainty in GSP estimates for wheat crop models. Different MS were created by combining each of the wheat crop models (CERES, CROPSM, and NWHEAT) with maximum evapotranspiration (ET<sub>max</sub>) models (Priestley–Taylor and Standardized Short Crop Reference Evapotranspiration) and soil evaporation (SE) models (Ritchie and Suleiman Ritchie), all within the Decision Support System for Agrotechnology Transfer-Cropping Systems Model (DSSAT-CSM). Similarly, different DE consisted of various subsets (the whole dataset and 6 holdouts) of a winter wheat dataset from Oklahoma, United States. Overall, MS, DE, and MS:DE together explained 70% or greater proportion of variability in more than three-quarters of all the estimated parameters across all DSSAT-CSM Wheat models. However, if we compare each factor individually, MS explained 25% or greater proportion of variability in nearly two-thirds of all the estimated parameters across all DSSAT-CSM Wheat models. Each DSSAT-CSM Wheat model showed a unique pattern for the uncertainty in GSP estimates. Overall, the uncertainty in GSP estimates due to MS and DE scenarios exceeded prior expectations for most parameters across models. Our results suggest that care must be taken during GSP estimation when using different MS (especially based on same crop model but different ET<sub>max</sub> and SE methods) and DE (especially under limited data availability). This is particularly important in the context of an ensemble modeling approach (when ensemble members include the same crop model with different ET<sub>max</sub> and SE methods), which has been increasingly adopted for climate impact assessments.</div></div>","PeriodicalId":51045,"journal":{"name":"European Journal of Agronomy","volume":"175 ","pages":"Article 127968"},"PeriodicalIF":5.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Impact of nitrogen addition on rhizosphere soil microbial community and biomass yield and quality of different fall dormancy-rating alfalfa cultivars 施氮对不同秋休眠期苜蓿品种根际土壤微生物群落及生物量产量和品质的影响

IF 5.5 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-04-01 Epub Date: 2026-01-20 DOI: 10.1016/j.eja.2026.128006

Yize Yu , Yaxin Li , Shuqi Ran , Hanyu Li , Jicao Dao , Jinhuan Yang , Lihong Yu , Yuefei Xu

Nitrogen fertilization is crucial for forage production and can alter soil microbial communities, whereas fall dormancy (FD) reflects alfalfa's physiological strategy and forage yield potential. However, it remains unclear how microbial communities respond to FD under different nitrogen fertilization management regimes, and how these responses impact alfalfa yield and quality. Therefore, we conducted a 4-year field experiment and treated three different FD alfalfa cultivars (FD3, FD5, and FD7) with and without nitrogen fertilization, and employed 16S rRNA and ITS high-throughput sequencing to explore rhizosphere microbial diversity and interactions, and to assess changes in cultivar yield and quality. Nitrogen fertilization significantly increased yield and crude protein (CP) content of different FD cultivars, with FD3 being the most significantly affected (p < 0.05). Bacterial community diversity was influenced by both nitrogen fertilization and FD, whereas fungal communities were primarily affected by FD. Specifically, nitrogen fertilization significantly reduced bacterial α-diversity and FD3 exhibited a higher bacterial α-diversity. Under nitrogen fertilization, bacterial community composition was more similar between FD5 and FD7. Co-occurrence network analysis indicated that nitrogen fertilization increased the microbial network complexity, with sensitive taxa responding to FD in specific co-occurrence patterns. Furthermore, these sensitive taxa included some keystone members (e.g., Nitrosomonadaceae and Helotiales), which were affected by environmental variables and were significantly positively correlated with alfalfa yield and CP content. Collectively, these results suggest interactive effects of FD and nitrogen fertilization on alfalfa performance and rhizosphere microbial communities, highlights the potential importance of keystone taxa in maintaining alfalfa yield and quality, and lays a foundation for developing fertilization strategies tailored to different FD alfalfa cultivars.

氮肥对牧草生产至关重要，可以改变土壤微生物群落，而秋季休眠（FD）反映了苜蓿的生理策略和饲料产量潜力。然而，目前尚不清楚微生物群落在不同氮肥管理制度下对FD的响应，以及这些响应如何影响苜蓿产量和品质。为此，我们进行了为期4年的大田试验，对3个不同的FD苜蓿品种（FD3、FD5和FD7）进行了施氮和不施氮处理，并利用16S rRNA和ITS高通量测序，探讨了根际微生物多样性及其相互作用，并评估了品种产量和品质的变化。施氮显著提高了不同FD品种的产量和粗蛋白质含量，其中对FD3的影响最为显著（p <； 0.05）。氮肥和FD对细菌群落多样性均有影响，而真菌群落主要受FD的影响。其中，氮肥显著降低了细菌α-多样性，而FD3表现出更高的细菌α-多样性。氮肥处理下，FD5与FD7的细菌群落组成较为相似。共现网络分析表明，施氮增加了微生物网络的复杂性，敏感类群对FD的响应具有特定的共现模式。此外，这些敏感分类群中还包括一些关键成员（如亚硝酸茅属和Helotiales），它们受环境变量的影响，与苜蓿产量和CP含量呈显著正相关。综上所述，FD和氮肥对苜蓿生产性能和根际微生物群落具有交互作用，突出了关键类群对维持苜蓿产量和品质的潜在重要性，为制定适合不同FD苜蓿品种的施肥策略奠定了基础。

{"title":"Impact of nitrogen addition on rhizosphere soil microbial community and biomass yield and quality of different fall dormancy-rating alfalfa cultivars","authors":"Yize Yu , Yaxin Li , Shuqi Ran , Hanyu Li , Jicao Dao , Jinhuan Yang , Lihong Yu , Yuefei Xu","doi":"10.1016/j.eja.2026.128006","DOIUrl":"10.1016/j.eja.2026.128006","url":null,"abstract":"<div><div>Nitrogen fertilization is crucial for forage production and can alter soil microbial communities, whereas fall dormancy (FD) reflects alfalfa's physiological strategy and forage yield potential. However, it remains unclear how microbial communities respond to FD under different nitrogen fertilization management regimes, and how these responses impact alfalfa yield and quality. Therefore, we conducted a 4-year field experiment and treated three different FD alfalfa cultivars (FD3, FD5, and FD7) with and without nitrogen fertilization, and employed 16S rRNA and ITS high-throughput sequencing to explore rhizosphere microbial diversity and interactions, and to assess changes in cultivar yield and quality. Nitrogen fertilization significantly increased yield and crude protein (CP) content of different FD cultivars, with FD3 being the most significantly affected (<em>p</em> < 0.05). Bacterial community diversity was influenced by both nitrogen fertilization and FD, whereas fungal communities were primarily affected by FD. Specifically, nitrogen fertilization significantly reduced bacterial α-diversity and FD3 exhibited a higher bacterial α-diversity. Under nitrogen fertilization, bacterial community composition was more similar between FD5 and FD7. Co-occurrence network analysis indicated that nitrogen fertilization increased the microbial network complexity, with sensitive taxa responding to FD in specific co-occurrence patterns. Furthermore, these sensitive taxa included some keystone members (e.g., Nitrosomonadaceae and Helotiales), which were affected by environmental variables and were significantly positively correlated with alfalfa yield and CP content. Collectively, these results suggest interactive effects of FD and nitrogen fertilization on alfalfa performance and rhizosphere microbial communities, highlights the potential importance of keystone taxa in maintaining alfalfa yield and quality, and lays a foundation for developing fertilization strategies tailored to different FD alfalfa cultivars.</div></div>","PeriodicalId":51045,"journal":{"name":"European Journal of Agronomy","volume":"175 ","pages":"Article 128006"},"PeriodicalIF":5.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146014863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Response of soil organic matter (SOM) properties from 180 years of mineral versus organic fertilisation in the Broadbalk experiment at Rothamsted (UK) 英国洛桑研究所Broadbalk试验中180年土壤有机质（SOM）特性对矿肥和有机肥的响应

IF 5.5 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-04-01 Epub Date: 2026-01-29 DOI: 10.1016/j.eja.2026.128017

Jerzy Weber , Lilla Mielnik , Peter K. Leinweber , Riccardo Spaccini , Andrew S. Gregory , Riffat Rahim , Elżbieta Jamroz , Irmina Ćwieląg-Piasecka , Agnieszka Grabusiewicz , Marek Podlasiński , Maria Jerzykiewicz , Magdalena Dębicka , Andrzej Kocowicz

The aim of this study was to deepen the knowledge on the changes in soil organic matter (SOM) properties under the long-term influence of organic and inorganic fertilization. Particular attention was paid to the humin fraction (HUM), considered to be a particularly stable and long-term sink of atmospheric carbon. The studies were conducted on soil samples from the Broadbalk Winter Wheat experiment running continuously for 180 years, which were analysed using unique chemical and spectrometric methods (¹³C-CPMAS NMR; C and N K-edge Xanes; EPR; TC-GC/MS; fluorescence; UV-Vis, and others). Long-term manure fertilization treatment confirmed the greatest increase of soil C at a level comparable to permanent grassland. The manuring significantly increased the HUM-C-content in comparison to the inorganically-fertilized NPK treatment and the control (no inputs) (7.02 g kg⁻¹, 4.37 g kg⁻¹ and 1.72 g kg⁻¹, respectively). The manuscript documented that the proportion of HUM in total organic carbon (TOC) increased twofold with NPK fertilization and one and a half times with manure fertilization, but surprisingly not after the application of both, shedding new light on the mechanisms of C stabilization. The manuscript indicated for the first time by multivariate statistical analyses that HUM-C enrichments from manure were linked with increasing proportions of heterocyclic N compounds. These findings have profound implications for broader sustainability, directly linking to climate change mitigation and food security. It is concluded that offsetting mineral fertilizer by manure, where this is possible and feasible, is an option for sustainable soil C increase.

本研究旨在加深对有机和无机施肥长期影响下土壤有机质（SOM）性质变化的认识。特别注意的是人类部分（HUM），被认为是一个特别稳定和长期的大气碳汇。研究人员对连续运行180年的Broadbalk冬小麦试验土壤样本进行了研究，并使用独特的化学和光谱分析方法（13C-CPMAS NMR、C和N k边Xanes、EPR、TC-GC/MS、荧光、UV-Vis等）对土壤样本进行了分析。长期有机肥处理的土壤C增幅最大，达到与永久草地相当的水平。与无机肥氮磷钾处理和对照（无投入）相比，施肥显著提高了hm -c含量（分别为7.02 g kg - 1、4.37 g kg - 1和1.72 g kg - 1）。研究结果表明，氮磷钾和有机肥分别使土壤中有机碳（TOC）的比例增加了2倍和1.5倍，但两者均未增加，这为土壤碳稳定机制的研究提供了新的思路。该论文首次通过多元统计分析表明，粪便中hm - c的富集与杂环N化合物比例的增加有关。这些发现对更广泛的可持续性具有深远影响，与减缓气候变化和粮食安全直接相关。综上所述，在可能和可行的情况下，用粪肥抵消矿物肥料是可持续增加土壤C的一种选择。

{"title":"Response of soil organic matter (SOM) properties from 180 years of mineral versus organic fertilisation in the Broadbalk experiment at Rothamsted (UK)","authors":"Jerzy Weber , Lilla Mielnik , Peter K. Leinweber , Riccardo Spaccini , Andrew S. Gregory , Riffat Rahim , Elżbieta Jamroz , Irmina Ćwieląg-Piasecka , Agnieszka Grabusiewicz , Marek Podlasiński , Maria Jerzykiewicz , Magdalena Dębicka , Andrzej Kocowicz","doi":"10.1016/j.eja.2026.128017","DOIUrl":"10.1016/j.eja.2026.128017","url":null,"abstract":"<div><div>The aim of this study was to deepen the knowledge on the changes in soil organic matter (SOM) properties under the long-term influence of organic and inorganic fertilization. Particular attention was paid to the humin fraction (HUM), considered to be a particularly stable and long-term sink of atmospheric carbon. The studies were conducted on soil samples from the Broadbalk Winter Wheat experiment running continuously for 180 years, which were analysed using unique chemical and spectrometric methods (<sup>13</sup>C-CPMAS NMR; C and N <em>K-</em>edge Xanes; EPR; TC-GC/MS; fluorescence; UV-Vis, and others). Long-term manure fertilization treatment confirmed the greatest increase of soil C at a level comparable to permanent grassland. The manuring significantly increased the HUM-C-content in comparison to the inorganically-fertilized NPK treatment and the control (no inputs) (7.02 g kg<sup>−1</sup>, 4.37 g kg<sup>−1</sup> and 1.72 g kg<sup>−1</sup>, respectively). The manuscript documented that the proportion of HUM in total organic carbon (TOC) increased twofold with NPK fertilization and one and a half times with manure fertilization, but surprisingly not after the application of both, shedding new light on the mechanisms of C stabilization. The manuscript indicated for the first time by multivariate statistical analyses that HUM-C enrichments from manure were linked with increasing proportions of heterocyclic N compounds. These findings have profound implications for broader sustainability, directly linking to climate change mitigation and food security. It is concluded that offsetting mineral fertilizer by manure, where this is possible and feasible, is an option for sustainable soil C increase.</div></div>","PeriodicalId":51045,"journal":{"name":"European Journal of Agronomy","volume":"175 ","pages":"Article 128017"},"PeriodicalIF":5.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146071603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Side-deep fertilization increases rice yield and nutrient use efficiency in China: A meta-analysis 侧深施肥提高中国水稻产量和养分利用效率：meta分析

IF 5.5 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-04-01 Epub Date: 2026-02-09 DOI: 10.1016/j.eja.2026.128026

Kaiqin Yuan , Jintao Li , Zifang Chen , Xiaowei Ma , Richard W. Bell , Yuxian Cao , Jun Hou

Increasing nutrient use efficiency and decreasing labor requirements for rice production are high priorities across Asia. Fertilizer placement beside the rice plants at 50–100 mm depth (called side-deep fertilization, SDF) is a promising alternative to the traditional fertilization that can reduce the amount of chemical fertilizer required, improve the use efficiency of fertilizer, alleviate the shortage of labor force, and realize the clean and simple production of rice. However, the potential for increased productivity and the factors influencing SDF are unclear. In this study, we synthesized 85 studies in China to evaluate the effects of SDF on rice yield, rice quality, nutrient use efficiency combined with greenhouse gas emissions, and explored the effects of different soil environments and fertilization management measures on them. SDF increased rice yield by 4.8 %, nitrogen use efficiency (NUE) by 21.4 %, and reduced CH₄ emission by 12.8 %, NH₃ volatilization by 42.0 %, but had no significant effect on N₂O emission. Random forest analysis showed that soil condition (pH, total nitrogen, available nitrogen and available phosphorus) and specific fertilization practices (amount and depth) were the most important factors on determining the effects of SDF. When the N application rate was ≤ 150 kg ha⁻¹, the yield (9.2 %) and NUE (20.6 %) increases were largest. When the P application rate was ≤ 60 kg ha⁻¹, SDF of P had the largest increase in rice yield (7.4 %) and partial factor productivity of phosphorus PFP_P (7.2 %). Overall, when fertilizer placement was > 100 mm, and the soil nutrient content was low, SDF had a greater impact on rice yield and nutrient use efficiency. In conclusion, SDF increases rice yield with lower environmental cost and lower fertilizer rate which is valuable for food security and sustainable production.

提高养分利用效率和减少水稻生产的劳动力需求是整个亚洲的优先事项。水稻植株旁边50-100 mm深度施肥（称为侧深施肥，SDF）是传统施肥的一种很有前途的替代方法，可以减少化肥需用量，提高肥料利用效率，缓解劳动力短缺，实现水稻的清洁、简单生产。然而，提高生产力的潜力和影响SDF的因素尚不清楚。在本研究中，我们综合了国内85项研究，评估了SDF对水稻产量、稻米品质、养分利用效率和温室气体排放的影响，并探讨了不同土壤环境和施肥管理措施对其的影响。SDF使水稻产量提高4.8 %，氮素利用效率（NUE）提高21.4% %，CH4排放量降低12.8 %，NH3挥发量降低42.0% %，但对N2O排放无显著影响。随机森林分析表明，土壤条件（pH、全氮、速效氮和速效磷）和具体施肥方式（施肥量和深度）是决定土壤自卸量效应的最重要因素。当施氮量≤ 150 kg ha−1时，产量（9.2 %）和氮肥利用效率（20.6 %）增幅最大。当施磷量≤ 60 kg ha−1时，施磷SDF对水稻产量的提高幅度最大（7.4% %），对磷PFPP部分要素生产率的提高幅度最大（7.2% %）。综上所述，当施肥量为>； 100 mm，土壤养分含量较低时，SDF对水稻产量和养分利用效率的影响较大。综上所述，SDF以较低的环境成本和较低的施肥量提高了水稻产量，对粮食安全和可持续生产具有重要意义。

{"title":"Side-deep fertilization increases rice yield and nutrient use efficiency in China: A meta-analysis","authors":"Kaiqin Yuan , Jintao Li , Zifang Chen , Xiaowei Ma , Richard W. Bell , Yuxian Cao , Jun Hou","doi":"10.1016/j.eja.2026.128026","DOIUrl":"10.1016/j.eja.2026.128026","url":null,"abstract":"<div><div>Increasing nutrient use efficiency and decreasing labor requirements for rice production are high priorities across Asia. Fertilizer placement beside the rice plants at 50–100 mm depth (called side-deep fertilization, SDF) is a promising alternative to the traditional fertilization that can reduce the amount of chemical fertilizer required, improve the use efficiency of fertilizer, alleviate the shortage of labor force, and realize the clean and simple production of rice. However, the potential for increased productivity and the factors influencing SDF are unclear. In this study, we synthesized 85 studies in China to evaluate the effects of SDF on rice yield, rice quality, nutrient use efficiency combined with greenhouse gas emissions, and explored the effects of different soil environments and fertilization management measures on them. SDF increased rice yield by 4.8 %, nitrogen use efficiency (NUE) by 21.4 %, and reduced CH<sub>4</sub> emission by 12.8 %, NH<sub>3</sub> volatilization by 42.0 %, but had no significant effect on N<sub>2</sub>O emission. Random forest analysis showed that soil condition (pH, total nitrogen, available nitrogen and available phosphorus) and specific fertilization practices (amount and depth) were the most important factors on determining the effects of SDF. When the N application rate was ≤ 150 kg ha<sup>−1</sup>, the yield (9.2 %) and NUE (20.6 %) increases were largest. When the P application rate was ≤ 60 kg ha<sup>−1</sup>, SDF of P had the largest increase in rice yield (7.4 %) and partial factor productivity of phosphorus PFP<sub>P</sub> (7.2 %). Overall, when fertilizer placement was > 100 mm, and the soil nutrient content was low, SDF had a greater impact on rice yield and nutrient use efficiency. In conclusion, SDF increases rice yield with lower environmental cost and lower fertilizer rate which is valuable for food security and sustainable production.</div></div>","PeriodicalId":51045,"journal":{"name":"European Journal of Agronomy","volume":"175 ","pages":"Article 128026"},"PeriodicalIF":5.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Soil compaction restricts tea growth through nutrient limitation and oxidative stress, associated with flavonoid metabolic changes: A four-year field trial 土壤压实通过营养限制和氧化应激限制茶叶生长，与黄酮类代谢变化有关：一项为期四年的田间试验

IF 5.5 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-04-01 Epub Date: 2026-01-24 DOI: 10.1016/j.eja.2026.128012

Wenyan Yang , Wenbin Liu , Jiawei Ma , Huan Zhang , Zhenyu Yang , Yuchun Wang , Mei Wang , Dan Liu

Purpose

The widespread adoption of mechanical harvesters in tea plantations has intensified soil compaction, posing a major abiotic constraint on tea plant growth. Elucidating the physiological mechanisms underlying such stress is critical for developing effective mitigation strategies.

Methods

A four-year field experiment comparing tillage (T), no-tillage (NT), and mechanical compaction (MC) treatments on plant physiological, metabolic, and transcriptional responses of tea root and leaf tissues were employed in this study.

Results

T treatment significantly enhanced soil nutrient availability, with available nitrogen, phosphorus, potassium, iron, and manganese concentrations 19.32–109.16 % higher than those under MC treatment. MC reduced plant height, suppressed root architecture development, and induced antioxidant defenses. Both roots and leaves showed increased malondialdehyde (MDA) levels and elevated activities of CAT and POD by 18.23–77.01 %, indicating oxidative stress mitigation. Metabolomic profiling identified flavonoid biosynthesis as the dominant response pathway under compaction, with key flavonoid metabolites including epicatechin, luteoforol, and phloretin, accumulating markedly in both tissues. Hormonal analysis showed increased levels of gibberellin A7 and brassinolide under MC, and organ-specific expression of regulatory genes (e.g., CHS, DFR, IAA, PYL) coordinated these metabolic adjustments.

Conclusions

This study demonstrates that soil compaction severely limits tea plant growth while triggering defense-related metabolic regulation. In contrast, tillage enhances nutrient availability and promotes plant development, whereas compaction induces oxidative stress and stimulates flavonoid-mediated defense responses. Overall, these findings provide mechanistic insights into tea plant adaptation to soil compaction and offer valuable guidance for sustainable management practices in tea cultivation.

茶园广泛采用机械收割机加剧了土壤压实，对茶树生长造成了主要的非生物限制。阐明这种应激背后的生理机制对于制定有效的缓解策略至关重要。

{"title":"Soil compaction restricts tea growth through nutrient limitation and oxidative stress, associated with flavonoid metabolic changes: A four-year field trial","authors":"Wenyan Yang , Wenbin Liu , Jiawei Ma , Huan Zhang , Zhenyu Yang , Yuchun Wang , Mei Wang , Dan Liu","doi":"10.1016/j.eja.2026.128012","DOIUrl":"10.1016/j.eja.2026.128012","url":null,"abstract":"<div><h3>Purpose</h3><div>The widespread adoption of mechanical harvesters in tea plantations has intensified soil compaction, posing a major abiotic constraint on tea plant growth. Elucidating the physiological mechanisms underlying such stress is critical for developing effective mitigation strategies.</div></div><div><h3>Methods</h3><div>A four-year field experiment comparing tillage (T), no-tillage (NT), and mechanical compaction (MC) treatments on plant physiological, metabolic, and transcriptional responses of tea root and leaf tissues were employed in this study.</div></div><div><h3>Results</h3><div>T treatment significantly enhanced soil nutrient availability, with available nitrogen, phosphorus, potassium, iron, and manganese concentrations 19.32–109.16 % higher than those under MC treatment. MC reduced plant height, suppressed root architecture development, and induced antioxidant defenses. Both roots and leaves showed increased malondialdehyde (MDA) levels and elevated activities of CAT and POD by 18.23–77.01 %, indicating oxidative stress mitigation. Metabolomic profiling identified flavonoid biosynthesis as the dominant response pathway under compaction, with key flavonoid metabolites including epicatechin, luteoforol, and phloretin, accumulating markedly in both tissues. Hormonal analysis showed increased levels of gibberellin A7 and brassinolide under MC, and organ-specific expression of regulatory genes (e.g., <em>CHS</em>, <em>DFR</em>, <em>IAA</em>, <em>PYL</em>) coordinated these metabolic adjustments.</div></div><div><h3>Conclusions</h3><div>This study demonstrates that soil compaction severely limits tea plant growth while triggering defense-related metabolic regulation. In contrast, tillage enhances nutrient availability and promotes plant development, whereas compaction induces oxidative stress and stimulates flavonoid-mediated defense responses. Overall, these findings provide mechanistic insights into tea plant adaptation to soil compaction and offer valuable guidance for sustainable management practices in tea cultivation.</div></div>","PeriodicalId":51045,"journal":{"name":"European Journal of Agronomy","volume":"175 ","pages":"Article 128012"},"PeriodicalIF":5.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146048009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

A transferable MMD-CWT framework for accurate cross-regional prediction of maize leaf nitrogen using hyperspectral sensing 一个可转移的MMD-CWT框架，用于高光谱遥感玉米叶片氮的准确跨区域预测

IF 5.2 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-03-24 DOI: 10.1016/j.eja.2026.128092

Yuzhe Tang, Fei Li, Haibo Yang, Yuncai Hu, Kang Yu

引用次数: 0

Acidic soil amendments enhance maize nutrient uptake, grain yield and biomass accumulation: A global meta-analysis 一项全球荟萃分析：酸性土壤改改剂提高玉米养分吸收、粮食产量和生物量积累

IF 5.2 1区农林科学 Q1 AGRONOMY

European Journal of Agronomy

Pub Date : 2026-03-23 DOI: 10.1016/j.eja.2026.128085

Si Chen, Xiaolei Sun, Siwen Zhang, Ningyu Li, Xixi Zhou, Zhenjiang Zhou

引用次数: 0