Nitrogen Dynamics in Tropical Pastures: Relating Soil–Plant–Animal Interactions to Improve Productivity and Reduce Greenhouse Gas Emissions
熱帯牧草地における窒素動態：生産性向上と温室効果ガス排出削減のための土壌-植物-動物相互作用の関連性 (AI 翻訳)
Hitalo Rodrigues da Silva, Gelson dos Santos Difante, Francisca Fernanda da Silva Roberto, Vanessa Zirondi Longhini, Jéssica Gomes Rodrigues, Marislayne de Gusmão Pereira, Carolina Marques Costa Araújo, Marcos Antonio Ferreira-Júnior, Denise Baptaglin Montagner, Gabriela Oliveira de Aquino Monteiro, Vicente Batista de Souza-Junior
🤖 gxceed AI 要約
日本語
本レビューは、熱帯牧草地における窒素施肥が生産性と温室効果ガス（GHG）排出に与える影響を、土壌-植物-動物-環境の相互作用を統合して分析した。窒素施肥は飼料生産と家畜生産性を高めるが、高施用量では窒素利用効率が低下する。施肥のタイミングや分割施用、窒素源の選択がN損失とGHG排出削減に重要である。今後の研究では、これらの要素を同時に考慮した統合的アプローチが求められる。
English
This narrative review integrates soil-plant-animal-environment interactions in tropical pastures to examine how nitrogen fertilization affects productivity and greenhouse gas (GHG) emissions. It finds that nitrogen increases forage and animal productivity but decreases nitrogen use efficiency at high rates. Timing, split application, and source selection are key to reducing N losses and GHG emissions. Future studies need integrated approaches considering all components.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は熱帯地域からの畜産物輸入や国際協力事業を通じて熱帯牧草地システムに関与しており、本論文の知見は日本の農業GX政策やサプライチェーン脱炭素化の科学的基盤となり得る。特に、窒素管理の効率化は GHG排出削減と生産性維持の両立に直結する。
In the global GX context
This review addresses the critical challenge of balancing productivity and emissions in tropical pastures, which are vital for global food security and climate mitigation. The management strategies identified (timing, splitting, source selection) are directly relevant to IPCC guidelines and national GHG inventories. It provides a scientific basis for sustainable intensification policies in tropical livestock systems.
👥 読者別の含意
🔬研究者:Highlights the need for integrated studies that simultaneously measure soil, plant, animal, and environmental responses to nitrogen management in tropical pastures.
🏢実務担当者:Livestock managers can apply the reviewed strategies on nitrogen timing, splitting, and source to improve productivity while reducing GHG emissions.
🏛政策担当者:Supports the design of policies for sustainable intensification of tropical livestock, linking productivity gains with climate mitigation targets.
📄 Abstract（原文）
Nitrogen fertilization plays a central role in the intensification and sustainability of tropical pasture systems by influencing forage production, animal performance, and greenhouse gas (GHG) emissions. Although the individual components of these systems have been extensively studied, studies that simultaneously integrate soil nitrogen processes, forage responses, animal performance, and environmental outcomes within a unified framework remain scarce in the literature. This structured narrative review aimed to synthesize current knowledge on the role of nitrogen in tropical pastures, addressing soil–plant–animal–environment interactions with a focus on nitrogen use efficiency, productivity, and GHG emissions. Studies were selected from Google Scholar using keywords related to nitrogen fertilization, tropical forages, GHG emissions, and animal performance, prioritizing research conducted with C4 forage species. The reviewed evidence demonstrates that nitrogen fertilization consistently increases forage accumulation, tillering, crude protein concentration, stocking rate, and animal productivity per unit area; however, nitrogen recovery efficiency decreases at high application rates. The timing of nitrogen application, dose splitting, and the choice of nitrogen source are key management strategies to reduce N losses through volatilization, leaching, and gaseous emissions, improving nitrogen use efficiency in tropical pasture systems. Future studies should focus on providing integrated answers that simultaneously consider soil, plant, animal, and environmental components, in order to support more efficient and sustainable nitrogen management in tropical livestock systems.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.3390/nitrogen7030069first seen 2026-07-01 05:49:00 · last seen 2026-07-01 05:50:57
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