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Impact of Tillage, Residue and Nutrient on Soil Active Carbon, Nitrogen and Crop Yields in a Soybean-Wheat Rotation in Vertisols of Central India

Indian Agricultural Research Journals

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Title Impact of Tillage, Residue and Nutrient on Soil Active Carbon, Nitrogen and Crop Yields in a Soybean-Wheat Rotation in Vertisols of Central India
 
Creator Radha Raghuwansi
Somasundaram Jayaraman
Abhay Shirale
Subash C. Gupta
Nishant K. Sinha
Kuntal M. Hati
Bharat P. Meena
K. Ramesh
Ashok K. Patra
Ram C. Dalal
 
Subject Tillage
crop residue
active carbon
crop yield
mineral nitrogen
 
Description This study was conducted as part of an on-going conservation agriculture experiment at ICAR-Indian Institute of Soil Science, Bhopal, which began in 2015. The experiment consists of different tillage system (NT: No tillage, RT: Reduced tillage and CT: conventional tillage), residue retention (30 and 60 cm residue retention) and nutrient doses (75 and 100% recommended dose of fertilizer (RDF), and soil test crop response (STCR dose) in a soybean-wheat sequence. The results showed that tillage, residue retention and nutrient management did not have any influence on soil pH and electrical conductivity (EC). However, there was an improvement in soil organic carbon (SOC) due to RT with 60 cm residue retention, showing an increase of 0.84 per cent after the harvest of wheat. Active carbon (C) improved to 835.7 and 780.6 mg C kg-1 under RT with 60 cm residue retention compared to CT. Both NT (30 and 60 cm residue retention) and RT (30 cm residue retention) also showed higher values of active C compared to conventional tillage (CT) and nutrient management. Ammoniacal (NH4 +-N) and nitrate (NO3--N) nitrogen also behaved in similar fashion under all the treatments. However, the grain, straw and biological yields of wheat crops were significantly higher under CT and STCR but not under soybean crop. Tillage-nutrient interaction was non-significant in improving the crop yields. Therefore, it can be inferred that the CA practice involving RT or NT along with 60 cm residue retention can be adopted to enhance C sequestration and soil health in the context of climate change.
 
Publisher Indian Society of Soil Science
 
Date 2024-07-01
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/JISSS/article/view/153276
 
Source Journal of the Indian Society of Soil Science; Vol. 72 No. 2 (2024): Journal of the Indian Society of Soil Science; 183-189
0974-0228
0019-638X
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/JISSS/article/view/153276/54962