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Long-term effect of different integrated nutrient management on soil organic carbon and its fractions and sustainability of rice–wheat system in Indo Gangetic Plains of India

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Title Long-term effect of different integrated nutrient management on soil organic carbon and its fractions and sustainability of rice–wheat system in Indo Gangetic Plains of India
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Creator A.K. Nayak, B. Gangwar, Arvind K. Shukla, Sonali P. Mazumdar, Anjani Kumar, R. Raja, Anil Kumar, Vinod Kumar, P.K. Rai, Udit Mohan
 
Subject Rice–wheat cropping system, Indo-Gangetic Plains, Yield trends, Soil organic carbon, SOC fractions, Sequestration
 
Description Not Available
Rice–wheat rotation is the most important cropping system of the Indo-Gangetic Plains (IGP) and is
responsible for the food security of the region. The effect of different integrated nutrient management
practices on soil organic carbon (SOC) stocks and its fractions, SOC sequestration potential as well as
the sustainability of the rice–wheat system were evaluated in long term experiments at different agroclimatic
zones of IGP. Application of NPK either through inorganic fertilizers or through combination
of inorganic fertilizer and organics such as farm yard manure (FYM) or crop residue or green manure
improved the SOC, particulate organic carbon (POC), microbial biomass carbon (MBC) concentration and
their sequestration rate. Application of 50% NPK + 50% N through FYM in rice and 100% NPK in wheat,
sequestered 0.39, 0.50, 0.51 and 0.62 Mg C ha−1 yr−1 over control (no N–P–K fertilizers or organics),
respectively at Ludhiana, Kanpur, Sabour and Kalyani using the mass of SOC in the control treatment
as reference point. Soil carbon sequestration with response to application of fertilizer partially substituted
(50% on N basis) with organics were higher in Kalyani and Sabour lying in humid climate than
Ludhiana and Kanpur lying in semiarid climate. The rice yield recorded a significant declining trend in
Ludhiana and Kanpur where as the yield trend was stable at Sabour and Kalyani under unfertilized control.
The system productivity in N–P–K fertilized plots and NPK along with organics showed either an
increasing trend or remained stable at all locations during last two and half decades of the experiment.
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Date 2018-12-03T09:30:13Z
2018-12-03T09:30:13Z
2012-01-01
 
Type Research Paper
 
Identifier A.K. Nayak, B. Gangwar, Arvind K. Shukla, Sonali P. Mazumdar, Anjani Kumar, R. Raja, Anil Kumar, Vinod Kumar, P.K. Rai, Udit Mohan. 2012.Long-term effect of different integrated nutrient management on soil organic carbon and its fractions and sustainability of rice–wheat system in Indo Gangetic Plains of India.127:129-139
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http://krishi.icar.gov.in/jspui/handle/123456789/15278
 
Language English
 
Relation Not Available;
 
Publisher Elsevier