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Carbon and nutrient dynamics under long-term nutrient management in tropical rice-wheat-jute system

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Title Carbon and nutrient dynamics under long-term nutrient management in tropical rice-wheat-jute system
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Creator Not Available
 
Subject Long-term experiment; carbon pools; carbon management index; nutrient availability; rice based system
 
Description Not Available
Impacts of 43-year nutrient management on carbon (C) and nutrient
dynamics were studied in a rice-wheat-jute system in tropical India.
Carbon dynamics was investigated on the basis of its distribution of
labile (microbial biomass C, permanganate oxidizable C and water soluble
C) and slow pools (Walkley Black oxidizable organic C), its indices (C
pool index, lability index) and C management index (CMI) at different soil
depths. Nutrient dynamics was judged by major nutrients availability,
and related soil enzymatic activities. We studied seven treatments including
unfertilized control, 100% NPK (N:P2O5:K2O 60:30:60), 50% NPK, 150%
NPK, 100% NP, 100% N, 100% NPK + farm yard manure (10 tonnes FYM
ha−1). Nutrients availability and soil enzymatic activities were significantly
increased under balanced fertilization (100% NPK + FYM) over other
treatments. Labile, slow and total C was also found highest in 100%
NPK + FYM. Enhanced C indices under 100% NPK + FYM over 100% NPK
and other treatments signified the importance of long term balanced
fertilization on soil C stabilization. Lability indexes were lower at sub-soil
(30-45cm). In terms of favourable nutrient dynamics and CMI, balanced
application of NPK plus organics were recommend for long term sustainability
of rice-wheat-jute system in tropics.
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Date 2020-08-01T02:45:20Z
2020-08-01T02:45:20Z
1001-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/38744
 
Language English
 
Relation Not Available;
 
Publisher Not Available