Conservation Agriculture Practices on Carbon Stock, Carbon Sequestration and Soil Biological Properties of Rice-Okra-Green Manure Cropping System
稲・オクラ・緑肥作付体系における保全農法が炭素貯留、炭素隔離および土壌生物学的特性に及ぼす影響 (AI 翻訳)
C. Durga, S Anitha, P Prameela, Meera V. Menon, Syama S. Menon, V. I. Beena
🤖 gxceed AI 要約
日本語
インドのケララ州で実施された圃場試験により、保全農法（不耕起＋残渣マルチ＋緑肥組み込み）が水稲・オクラ・緑肥輪作体系において土壌炭素貯留量と炭素隔離能を有意に向上させることを実証。特に、平畝直播＋緑肥＋残渣マルチ＋ササゲ処理で最大の炭素隔離（9.52 Mg/ha @15cm深）を示した。微生物バイオマス炭素やデヒドロゲナーゼ活性も保全農法で高まった。
English
Field experiments in Kerala, India show that conservation agriculture (direct seeding, residue mulch, green manure) significantly increases soil carbon stock and sequestration in a rice-okra-green manure cropping system. Maximum sequestration of 9.52 Mg/ha at 15 cm depth was observed under direct seeding with green manure and residue mulch. Microbial biomass carbon and dehydrogenase activity also improved.
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
本論文は熱帯アジアの稲作体系における保全農法の炭素隔離効果を定量的に示しており、日本の水田農業における炭素貯留策の参考となり得る。ただし、日本のGX政策（SSBJや有報開示）との直接的な接点は乏しい。
In the global GX context
This paper provides empirical evidence on soil carbon sequestration rates in tropical rice-based cropping systems under conservation agriculture, contributing to the global knowledge base on agricultural climate mitigation. It may inform land-sector carbon accounting in climate disclosure frameworks like CDP or TCFD, though the data is region-specific.
👥 読者別の含意
🔬研究者:Useful for agronomists and soil scientists studying carbon sequestration potential of conservation agriculture in tropical systems.
🏛政策担当者:Can support agricultural climate mitigation policies by providing quantitative sequestration estimates for conservation practices in rice-based systems.
📄 Abstract（原文）
Conservation agriculture-based sustainable crop production intensification must not only reduce the impact of climate change on crop production but also mitigate the factors that cause climate change by reducing emissions and by contributing to carbon sequestration in soil while improving food security and enhanced productivity of resources. The present study explores the carbon stock, soil carbon sequestration potential and changes in physical, chemical and biological properties of soil due to conservation agriculture practices. Field experiments were conducted in the Agronomy Farm, College of Agriculture, Vellanikkara, from May 2019 to March 2021to study the effect of conservation agriculture (CA) practiceson carbon stock, carbon sequestration and soil biological properties. Rice-okra-green manure cropping system with conservation practice were compared with rice - okra cropping system without conservation practices, keeping the same layout for two years. Conservation agriculture practices had a significant influence on carbon stock, carbon sequestration and soil biological properties. After six cropping sequences, conservation practices such as direct sowing rice in flat bed + green manuring- okra+ crop residue mulch-cowpea had the maximum soil carbon sequestration of 9.52 Mg ha-1and 6.03 Mg ha-1, at 15 and 30 cm soil depth, followed by direct seeding rice in flat bed + brown manuring- okra+ crop residue mulch-cowpea (10.17,6.07 Mg ha-1). The treatments with out conservation agriculture practices, such as direct seeding rice in flat beds - okra-fallow, had a negative sequestration value. The highest microbial biomass carbon 134.83μg g-1) was recorded in direct seeding rice in flat bed + brown manuring - okra + crop residue mulch-cowpea. Dehydrogenase activity was found to be significantly highest in direct seeding rice in flat bed + brown manuring - okra + crop residue mulch-cowpea (57.17 μg TPF g-1 soilday-1) and it was on par with direct seeding rice in flat bed + green manuring –okra + crop residue mulch-cowpea (T4) (57.17 μg TPF g-1 soilday-1).
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.9734/ijpss/2026/v38i56064first seen 2026-05-17 04:47:50 · last seen 2026-05-28 04:40:33
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