Vol. 16 No. 3
Effect of soil moisture regimes and sources of nutrients on carbon sequestration potential in rice-wheat cropping system
Author(s): MEGHNA, PUNAM, R. KUMAR AND M. SETH
Abstract: A field experiment was conducted to study the effect of soil moisture regimes and sources of nutrients on carbon sequestration potential in rice-wheat cropping system on a silty clay loam soil. Results revealed that grain yield and straw yield of rice and wheat, organic carbon sequestered in plant parts, microbial biomass carbon and soil organic carbon were increased with soil moisture regimes and nutrient management practices. Irrigated condition significantly increased the grain yield and straw yield of both rice and wheat over rainfed condition. Among nutrient management practices, organic nutrient management practice produced 55.4 and 48.2 per cent higher grain yield than inorganic nutrient management in rice and wheat crops, respectively. Under irrigated condition, rice-wheat cropping system produced significantly highest biomass and sequestered carbon. Organic nutrient management resulted in 50.3 and 51.8 per cent higher biomass and sequestered carbon, respectively in comparison to inorganic nutrient management.
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