Record Details

Nitrogen Management in Conservation Agriculture-based Cropping Systems

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Nitrogen Management in Conservation Agriculture-based Cropping Systems
Not Available
 
Creator P.C. Sharma
H.S. Jat
R. K. Fagodiya
 
Subject Conservation agriculture
N immobilization
adaptive N management
precision N management
demand driven N supply
 
Description Not Available
The conversion of conventional agriculture to conservation agriculture (CA) affects the nitrogen (N) availability to crop plants. During the initial 2-3 years of CA-based management practices, more N immobilization is associated with the added crop residue retention and incorporation. This increase in N immobilization decreases the nitrogen use efficiency (NUE) in crops and cropping systems. After three years of organic residues buildup in soil under CA improved significantly the soil organic carbon (SOC) content and physical properties of soils; this improvement in physical and chemical soil health enhanced the NUE. This review article focuses on the impacts of CA principles namely, zero tillage (ZT), residue management, and crop diversification on N availability and its dynamics in the CA-based system, and their efficient N management strategies. Here, the impact of major N management tools and techniques, namely, chlorophyll meter, leaf color chart (LCC), GreenSeeker (GS), Nutrient Expert (NE), band placement, coated fertilizer application, fertigation etc. on the N availability and crop yields under the CA-based system is reviewed. It is concluded, that the adaptive N management with modern tools and techniques, and better agronomic management can enhance the N availability to crop plants in the CA-based systems, which can scale-up the areaunder CA. The judicious N management in CA can enhance: soil health by 50-100% depending on the residue load, crop productivity by 5-10%, NUE by 20-30%, and offer innumerable environmental benefits. The fertigation through subsurface drip irrigation saved about 40% of irrigation water and 20% of N in rice-wheat and maize-wheat cropping systems, respectively.
Not Available
 
Date 2022-02-11T04:44:55Z
2022-02-11T04:44:55Z
2021-11-27
 
Type Review Paper
 
Identifier Sharma P C, Fagodiya R K and Hat H S. 2021. Nitrogen Management in Conservation Agriculture-based Cropping Systems. Indian Journal of Fertilizers, 17(11) 1166-1179.
0973-1822
http://krishi.icar.gov.in/jspui/handle/123456789/69750
 
Language English
 
Relation Not Available;
 
Publisher Fertilizers Association of India