Pulse Brain · Growing Health Evidence Index
Peer-reviewed

The environmental trade-offs of applying soil amendments: Microbial biomass and greenhouse gas emission dynamics in organic rice paddy soils

Hendra Gonsalve W. Lasar, Suman Lamichhane, Fugen Dou, Terry J. Gentry

Applied Soil Ecology · 2025

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Summary

A major challenge of organic rice production is obtaining optimal nutrient levels while maintaining environmental sustainability. Here, we investigated the effects of organic management practices via the application of organic soil amendments on soil microbial biomass and changes in greenhouse gas (GHG) emissions in rice paddy, affecting global warming potential (GWP) and greenhouse gas intensity (GHGI). Different N sources: chicken liter pellet (CLP), NatureSafe® (NS), and their mixture (CLP + NS) were amended to rice paddy field at varying N rates: 0, 50, and 150 kg N ha −1 . Organic management in rice paddy resulted in a range of outcomes, including variations in soil microbial biomass carbon (C) and nitrogen (N), CO 2 and CH 4 emissions, GWP, and GHGI. A notable increase in microbial b

Subject
Climate & greenhouse gas mitigation
Source type
Peer-reviewed study
System type
Arable cereals
DOI
10.1016/j.apsoil.2025.105977
Catalogue ID
SNmpdjw2fq-ff90j9
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