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Tillage and nutrient management influence net global warming potential and greenhouse gas intensity in soybean-wheat cropping system

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Title Tillage and nutrient management influence net global warming potential and greenhouse gas intensity in soybean-wheat cropping system
 
Creator Lenka, Sangeeta
Lenka, Narendra Kumar
Rao, A Subba
Raghuwanshi, J
Singh, Bharat
Saha, JK
Patra, AK
 
Subject Climate change
Nitrous oxide flux
Methane flux
Soil carbon sequestration
Soil respiration
Vertisol
 
Description 207-214
Conservation tillage has proven advantageous in improving soil health and productivity. However, the greenhouse gases (GHGs) emission and intensity from different conservation tillage and nutrient management systems under Indian conditions are less understood. Therefore, here, we compared the effect of tillage and nutrient management on GHGs emissions, net global warming potential (NGWP), and greenhouse gas intensity (GHGI) from a field experiment under five years in a soybean-wheat cropping system in the Vertisols. The tillage treatments comprised of reduced tillage (RT) and no tillage (NT). The three nutrient management treatments included application of 100% NPK (T1), 100% NPK + 1.0 Mg FYM-C ha-1 (T2), 100% NPK +2.0 Mg FYM-C ha-1 (T3). The results showed significantly higher SOC sequestration under NT (1388 kg ha-1 yr-1) followed byRT (1134 kg ha-1 yr-1) with application of FYM (2.0 Mg C ha-1) (T3) every year. Across tillage, integrated nutrient management(T2 and T3) lowered NGWP and GHGI compared to NPK (T1). The GHGI of NT system was less by 33% compared to RT. The results suggest that GHGs mitigation and sustained food production in the soybean-wheat system can be achieved in NT and RT with integrated use of organic and inorganic fertilizer as the major component of nutrient management.
 
Date 2022-03-04T07:15:30Z
2022-03-04T07:15:30Z
2022-03
 
Type Article
 
Identifier 0975-1009 (Online); 0019-5189 (Print)
http://nopr.niscair.res.in/handle/123456789/59286
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJEB Vol.60(03) [Mar 2022]