Comparison of methane emission characteristics in air-dried and composted cattle manure amended paddy soil during rice cultivation

• Published in: Agriculture, ecosystems & environment Vol. 197; pp. 60 - 67
• Main Authors: Kim, Sang Yoon, Pramanik, Prabhat, Gutierrez, Jessie, Hwang, Hyun Young, Kim, Pil Joo
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 01.12.2014; Elsevier
• Subjects: Aggregates; Agronomy. Soil science and plant productions; Biological and medical sciences; Compost application; Composting; Cultivation; Emission; Emission analysis; Fundamental and applied biological sciences. Psychology; General agroecology; General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping; General agronomy. Plant production; Generalities. Agricultural and farming systems. Agricultural development; Labile organic C; Manure; Methane; Methane emission; Organic amendments; Organic matter fractionation; Oryza sativa; Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries; Rice cultivation; Soil (material); Soil science; Soil-plant relationships. Soil fertility. Fertilization. Amendments; Use of agricultural and forest wastes. Biomass use, bioconversion; Methane emission; Organic matter fractionation; Compost application; Labile organic C; Organic amendments; Rice cultivation; Methane; Organic carbon; Monocotyledones; Organic matter; Gas emission; Cultivated soil; Cereal crop; Gramineae; Angiospermae; Methanogenesis; Cattle manure; Compost; Fractionation; Air drying; Ecology; Oryza; Instability; Spermatophyta; Organic amendment
• DOI: 10.1016/j.agee.2014.07.013
• ISSN: 0167-8809

•We investigated the effect of air-dried and composted manures on CH4 emission in rice field.•Compost leads to ∼50% mitigation of CH4 emission compared to air-dried manures.•Labile organic C content was higher in manure-treated soils than in composted manures.•C fraction in lighter aggregates of manure treated soils was higher than in composted manures.•C assimilation in light fractions was possibly the driving force for CH4 emission. Application of organic matter is essential for sustaining the health and productivity of a soil. However, organic amendments produce methane (CH4) emissions from rice (Oryza sativa L.) paddy soils. In this experiment, we evaluated the relative effects of composted and air-dried forms of different manures on CH4 emission from rice paddy soils. Air-dried and composted manures from both Korean cows and dairy cows were applied to evaluate their effects on CH4 emissions in rice paddy soils. Application of organic amendments increased CH4 emissions from soil during rice cultivation. Application of composted manures reduced CH4 emission by up to 50% compared to air-dried manures. The chemical composition of applied cattle manures may also determine the level of CH4 emissions from rice paddy soils. The amount of decomposable organic C, its distribution in lighter soil aggregates and the potential of these soil aggregates to generate labile C compounds in soil were possible influencing factors in the emission of CH4 from organic amended rice paddy soils.