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. Long term effects of crop residues and fertility management on carbon sequestration and agronomic productivity of groundnut – fingermillet rotation on an Alfisol in southern India.

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Title . Long term effects of crop residues and fertility management on carbon sequestration and agronomic productivity of groundnut – fingermillet rotation on an Alfisol in southern India.
. Long term effects of crop residues and fertility management on carbon sequestration and agronomic productivity of groundnut – fingermillet rotation on an Alfisol in southern India.
 
Creator ICAR_CRIDA
 
Subject carbon inputs; carbon sequestration; groundnut–finger millet rotation; semi-arid tropics; sustainable yield index
 
Description Not Available
The data from long-term management and cropping systems experiments are needed to assess
changes in soil quality, organic carbon pool, and agronomic sustainability. Thus, a 13-year-old
soil fertility management experiment was used to assess the impact of crop residues carbon (C)
inputs on SOC stock in a rainfed groundnut (Arachis hypogeae L.)–fingermillet (Eleusine
coracana (L.) Gaertn) rotation in semiarid alfisol. The application of farmyard manure
(FYM) alone or in a combination with chemical fertilizers contributed to higher amounts of
C inputs and subsequently to build up a higher SOC pool. Application of 10 Mg ha21 of
FYM and a recommended dose of chemical fertilizer (25:21.8:20.7 and 50:21.8:20.7 kg N,
P, K ha21 for groundnut and fingermillet, respectively) increased soil SOC pool by 41.2%
to 73.0 Mg ha21 with an increase of 9.3 Mg ha21 over 13 years. Both SOC pool and rates
of its sequestration were positively correlated with cumulative C input and sustainable yield
index. A minimal input of 1.62 Mg C ha21 yr21 is needed to maintain SOC pool at the
antecedent level. Balanced application of NPK fertilizers is needed to reduce and reverse the
depletion of SOC pool.
Not Available
 
Date 2020-02-25T05:46:08Z
2020-02-25T05:46:08Z
2012
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32496
 
Language English
 
Relation Not Available;
 
Publisher Venkateswarlu B,