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Changes in soil organic carbon pools after 15 years of Conservation Agriculture in rice (Oryza sativa)-wheat (Triticum aestivum) cropping system of eastern Indo-Gangetic plains

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Title Changes in soil organic carbon pools after 15 years of Conservation Agriculture in rice (Oryza sativa)-wheat (Triticum aestivum) cropping system of eastern Indo-Gangetic plains
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Creator Mahala, D.M.
Meena, M.C.
Dwivedi, B.S.
Datta, S.P
Dey, A.
Das, D.
Parihar, C.M.
Yadav, R.K.
Chaudhary, A.
Jat, R.K.
Choudhary, K.M.
 
Subject Carbon management index
Conservation agriculture
Soil organic carbon fractions
Zero-till
 
Description Not Available
The present study was carried out at Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar during
2021–2023 to focus on examining alterations in SOC pools resulting from conservation agriculture (CA) practices
in R-W system in the eastern IGP, following the collection of soil samples from a long-term trial that was initiated in
rainy (kharif) season 2006. The trial included eight combinations, namely: conventional tilled rice (Oryza sativa L.)
and wheat (Triticum aestivum L.) (CTR-CTW); CT rice and zero till wheat (CTR-ZTW); direct seeded rice (DSR)
and wheat on permanent raised beds (PBDSR-PBW); ZTDSR and CT Wheat (ZTDSR-CTW); ZTDSR and ZT wheat
without residue (ZTDSR-ZTW -R); ZTDSR-ZT wheat with residue (ZTDSR-ZTW +R); unpuddled transplanted rice-
ZTW (UpTR-ZTW) and ZTDSR-sesbania brown manure-ZTW (ZTDSR-S-ZTW). Results revealed that implementing
zero tillage (ZT) combined with residue retention in rice and wheat cultivation led to enhanced levels of soil organic
carbon (SOC) across all four fractions, namely very labile (CVL), labile (CL), less labile (CLL), and non-labile
(CNL), in comparison to the continuous and rotational tillage practices. The tillage and residue management options
significantly affected the lability index (LI) and C pool index (CPI), with zero-tillage and residue retention leading
to lower LI and higher CPI values. The management practices significantly affected the C management index (CMI),
with zero-tillage and residue retention showing the highest CMI values. Findings showed the potential of CA practices
for enhancing soil C quality as well as C sequestration in soil of the Eastern IGP of India.
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Date 2024-03-30T21:15:51Z
2024-03-30T21:15:51Z
2023-05-26
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/81706
 
Language English
 
Relation Not Available;
 
Publisher Not Available