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Assessing the Effectiveness of Zero Tillage and Legume-based Cropping Systems for Enhancing Soil Nitrogen Concentrations and Stocks under Rainfed Pearl Millet Production Systems

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Title Assessing the Effectiveness of Zero Tillage and Legume-based Cropping Systems for Enhancing Soil Nitrogen Concentrations and Stocks under Rainfed Pearl Millet Production Systems
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Creator Chaudhary, A.
Meena, M.C.
Bana, R.S.
Dey, A.
Datta, S.P.
Mahala, D.M.
Mishra, R.
 
Subject Zero-tillage
cropping systems
mineral nitrogen
hot-water extractable N
N stock
 
Description Not Available
Nitrogen (N) is a critical factor in determining the potential yield of crops, and agronomic practices play a
crucial role in regulating the forms and availability of N in soils to the plant. Therefore, this study
employed a split-plot design, where the main plots were allocated to four tillage methods: zero tillage with
crop residue retention (ZT+R), zero tillage with crop residue removal (ZT-R), conventional tillage (CT),
and undisturbed soils (UD). The sub-plots were designated for four cropping systems: pearl millet-chickpea
(PM-C), pearl millet-chickpea-fodder pearl millet (PM-C-FPM), pearl millet-chickpea-mung bean (PM-CM),
and the natural grasses in UD. The study aimed to understand the effects of different management
practices on various forms of N in soil, including mineral-N, hot-water extractable organic N (HWEON),
and available N (AvlN), as well as mineral N stock, HWEON stock, and total N stock in different soil
layers. The study found that ZT+R significantly increased soil mineral N content and stock by 20%
compared to CT across 0-30 cm soil depth. The effects of these practices on mineral-N concentrations were
most pronounced in the surface soil layer. Furthermore, ZT practices and legume-based cropping systems
enhanced N concentration and its availability. The study also revealed that HWEON content and its stocks
were more sensitive to soil tillage practices than cropping systems, with ZT+R having 3.79 times higher
HWEON concentration than CT at 0-5 cm soil depth. The significant differences for total N among tillage
practices were more pronounced under ZT+R compared to CT. The research highlights the need for using
conservation tillage practices, such as ZT+R, in combination with legume-based cropping systems to
improve N availability and enhance soil fertility.
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Date 2024-03-30T21:13:36Z
2024-03-30T21:13:36Z
2023
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/81705
 
Language English
 
Relation Not Available;
 
Publisher Not Available