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Long term effect of conservation agriculture in maize rotations on total organic carbon, physical and biological properties of a sandy loam soil in north-western Indo-Gangetic Plains

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Title Long term effect of conservation agriculture in maize rotations on total organic carbon, physical and biological properties of a sandy loam soil in north-western Indo-Gangetic Plains
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Creator Parihar, C.M., Yadav, M.R., Jat, S.L., Singh, A.K., Kumar, B., Pradhan, S., Chakraborty, D., Jat, M.L., Jat, R.K., Saharawat, Y.S. and Yadav, O.P.
 
Subject Diversified crop rotations, Enzymatic activity ,Indo-Gangetic Plains, Organic carbon, Soil physical properties, Tillage practices
 
Description Not Available
Maize-based crop rotations are advocated as alternate to rice-based systems in South Asia due to better
suitability for diverse ecologies, higher yields with less water use and more palatable maize fodder
compared to rice, and increased demand of maize from piggery and poultry industries. Alternate tillage
and crop establishment practices are important management strategies for tackling the issues of soil
health deterioration and over exploitation of underground water resources, particularly in rice based
intensive crop rotations. The conservation agriculture (CA) based tillage and crop establishment practices
such as zero tillage (ZT) and permanent raised beds (PB) hold potential to enhance soil organic carbon
(SOC), physical and biological properties for sustainability of soil health. Therefore, a long term study was
conducted to evaluate the twelve combinations of tillage practices (03) and irrigated intensive maize
based crop rotations (04) on organic carbon, physical properties and microbial biomass and enzymatic
activities of a sandy loam (Typic Haplustept) soil in north-western India. The tillage practices consisted of
ZT, PB and conventional tillage (CT) in main plots and four diversified intensive maize based crop
rotations (MWMb: Maize-Wheat-Mungbean, MCS: Maize-Chickpea-Sesbaina, MMuMb: Maize-MustardMungbean,
MMS: Maize-Maize-Sesbania) in sub plots. In this study we analysed the SOC, physical and
biological properties of soil at various depths after 7 years of continuous ZT, PB and CT in diversified maize
rotations. Compared to CT plots, the soil physical properties like water stable aggregates (WSA) > 250mm
were 16.1-32.5% higher, and bulk density (BD) and penetration resistance (PR) showed significant
(P < 0.05) decline (11.0–14.3 and 11.2–12.0%) in ZT and PB plots at 0–15 and 15–30 cm soil layers. The soil
organic carbon (SOC) increased by 34.6-35.3% at 0–15 cm, and 23.6-26.5% at 15–30 cm soil depths with
conservation agriculture (ZT and PB) based crop establishment techniques over CT. Similarly, the soil
microbial biomass carbon (MBC) under CA based systems increased by 45–48.9% in 0–30 cm profile depth
of a sandy loam (Typic Haplustept) soil. Significant (P < 0.05) improvement in soil enzymatic activities
i.e., Fluorescein diacetate, dehydrogenase, b Glucosidase and Alkaline phosphatase was also recorded in
the CA based treatments. Significant (P < 0.05) synergistic effects of summer legumes (mungbean and
Sesbania) with winter legume/cereal in crop rotations were observed on SOC,WSA, BD, PR and Ksat at 0–15
and 15–30 cm depths. Interaction between tillage and crop rotations were significant (P < 0.05) for soil
organic carbon, physical properties and enzymatic activities. Thus our long-term study suggests that CA
based crop management with selected diversified maize based rotations (MCS and MWMb) can be
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Date 2018-11-22T09:21:14Z
2018-11-22T09:21:14Z
2016-08
 
Type Research Paper
 
Identifier Parihar, C.M., Yadav, M.R., Jat, S.L., Singh, A.K., Kumar, B., Pradhan, S., Chakraborty, D., Jat, M.L., Jat, R.K., Saharawat, Y.S. and Yadav, O.P. 2016. Long term effect of conservation agriculture in maize rotations on total organic carbon, physical and biological properties of a sandy loam soil in north-western Indo-Gangetic Plains. Soil and Tillage Research, 161:116-128
0167-1987
http://krishi.icar.gov.in/jspui/handle/123456789/12787
 
Language English
 
Relation Not Available;
 
Publisher Elsevier