Nitrogen Dynamics under Long Term Lantana Camara (L.) Residue and Fertilizer Application in a Rice-Wheat Cropping System

Sharma, S and Chander, G and Verma, T S (2014) Nitrogen Dynamics under Long Term Lantana Camara (L.) Residue and Fertilizer Application in a Rice-Wheat Cropping System. Journal of Plant Nutrition. pp. 1-28. ISSN 1532-4087

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Abstract

Long term effects of lantana (Lantana camera L.) residue and fertilizer application were studied on nitrogen (N) fractions in a Typic Hapludalf under rice-wheat cropping at Palampur, India (32°6′N, 76°3′E). After 12 crop cycles, lantana and fertilizer application showed an additive effect on the buildup of different N fractions. Hydrolyzable-N constituted 86% of total organic-N and 84% of total-N. All fractions of N except unidentified-N, non-hydrolyzable-N, and total-N were strongly interdependent and had a positive influence on grain yield and N uptake in rice and wheat crops. Serine+threonine-N was the most important fraction contributing towards grain yield and N uptake in rice and wheat. Fertilizers at 66% of recommendation plus lantana at 10 t ha−1 maintained higher available-N than that under 100% fertilizers alone; the N content was same as 12 years before. Inclusion of lantana indicated net saving of 33% fertilizers plus higher yields and sustained soil health.

Item Type:	Article
Divisions:	RP-Resilient Dryland Systems
CRP:	CGIAR Research Program on Water, Land and Ecosystems (WLE)
Uncontrolled Keywords:	Nitrogen fractions, nitrogen uptake, lantana, fertilizers, integrated nutrient management, rice-wheat
Subjects:	Others > Wheat Others > Fertilizer Applications
Depositing User:	Mr Siva Shankar
Date Deposited:	17 Feb 2014 04:10
Last Modified:	26 Aug 2016 05:27
URI:	http://oar.icrisat.org/id/eprint/7528
Official URL:	http://dx.doi.org/10.1080/01904167.2014.890221
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

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