Transformation to Conservation Agriculture Shows Reduced Soil CO2 Emissions and Improved Soil Aggregate Stability in the First Season in Rain-Fed Areas in India

Saeed Karbin; Hossein Ali Alikhani; Pramod Sahu; Bharat Mogare; Bhaskar Mitra; Sandeep Viswakarma; Jitendra Singh; RamKrishna Mahajan; Sunil Malviya; Pankaj Badole; Naveen Patidar; Amir Kassam

doi:10.20944/preprints201804.0111.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 9 April 2018 / Approved: 10 April 2018 / Online: 10 April 2018 (06:30:15 CEST)

Conservation Agriculture (CA) is capable of improving soil health and ecosystem functions. Soil carbon sequestration is one of the ecosystem processes that is of importance in sustainable land management involving reduction in greenhouse gas emissions and adaptation to climate change. In this study, we wanted to determine, during the first year of the process of establishing a CA cropping system in rain-fed areas in Madhya Pradesh state of India, which soil health indicators show measurable signs of improvement. Four field trials were selected, each comprising two neighboring plots. One plot (15×15 m) was managed conventionally under farmer practice and was tilled before sowing seeds, and in the adjacent plot Conservation Agriculture practices were applied. No mineral fertilizers or pesticides were applied in both treatments. Soil health indicators of soil aggregate stability, soil-atmosphere CO₂ fluxes, water infiltration, soil moisture, potentially mineralizable nitrogen, soil organic content and bulk density were measured. Results demonstrate that soil CO₂ emissions in CA soils decreased and soil aggregates stability improved in the first year. Generally, in CA soils, there were measurable improvements in all soil health indicators but only some of them were statistically significant.

conservation agriculture; greenhouse gases; soil health

BIOLOGY, Agricultural Sciences & Agronomy

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Transformation to Conservation Agriculture Shows Reduced Soil CO₂ Emissions and Improved Soil Aggregate Stability in the First Season in Rain-Fed Areas in India

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