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Influence of neem oil-coated urea and maxican lilac (Gliricidia sepium) as green-manure on transformation of soil nitrogen in rice (Oriza sativa)wheat (Triticum aestivum) system in Typic Hapluestert

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Title Influence of neem oil-coated urea and maxican lilac (Gliricidia sepium) as green-manure on transformation of soil nitrogen in rice (Oriza sativa)wheat (Triticum aestivum) system in Typic Hapluestert
 
Creator SINGH, MUNESHWAR
TAKKAR, P N
 
Subject N transformation, neem oil-coated urea, green-manure, rice-wheat system, Oryza sativa, Triticum aestivum
 
Description A study was carried out to evaluate the influence of neem oil-coated urea and green-manure on N-use efficiency andtransformation of organic fractions of soil nitrogen and their residual effect under rice (Oryza sativa L.)-wheat (Triticumaestivum L. emend. Fiori & Paol.) system in Vertisol. Application of neem oil-coated urea and lac-coated urea increased the grain yield of rice respectively by nearly 15 and 16%, with a residual effect of 41 and 48% compared with prilled urea. Incorporation of green-manure through mexican lilac (Gliricidia sepium L.) also increased the grain yield of both the crops. The coating of neem oil on urea increased the N-use efficiency by 13.8%. Application of N through neem oil-coated urea and lac-coated urea and the incorporation of green-manure to rice increased the total hydrolyzable N, amino acid N, amino sugar N, hydrolyzable ammonia N, hydrolyzable unidentified N and non-hydrolyzable N. Their application after wheat reduced the amino acid N, amino sugar N and hydrolyzable ammonia N, but their level was more than under prilled urea and the initial level. Incorporation of mexical lilac increased the hydrolyzable unidentified N after rice as well as wheat. Correlation studies between different fractions of organic N and yield and the uptakeof rice and wheat indicated that total hydrolyzable N, amino sugar N, hydrolyzable ammonia N and amino acid N are the active components of the available pool of nitrogen in the plant.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-05-17
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/30014
 
Source The Indian Journal of Agricultural Sciences; Vol 67, No 9 (1997)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/30014/13547
 
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