A comparison of nitrogen fixation in genotypes of groundnut (Arachis hypogaea L.) using 15N-isotope dilution

Giller, K E and Nambiar, P T C and Srinivasa Rao, B and Dart, P J and Day, J M (1987) A comparison of nitrogen fixation in genotypes of groundnut (Arachis hypogaea L.) using 15N-isotope dilution. Biology and Fertility of Soils, 5 (1). pp. 23-25. ISSN 0178-2762

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Abstract

Nitrogen fixation in seven groundnut genotypes was measured by 15N-isotope dilution using a non-nodulating cultivar of groundnut as the nonfixing reference plant. Nitrogen fixation varied between 100 kg N ha−1 in genotype J-11 and 153 kg N ha−1 in Robut 33-1. The amount of plant-available soil N was small, so that 86%–92% of plant nitrogen was derived from N2-fixation. Thus differences in N2-fixation between genotypes closely reflected differences in their total N accumulation

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Uncontrolled Keywords: N2-fixation - Arachis hypogaea - 15N isotope dilution - Groundnut - Rhizobium inoculation - Plant available soil N
Subjects: Mandate crops > Groundnut
Depositing User: Ms K Syamalamba
Date Deposited: 09 Jan 2013 10:23
Last Modified: 07 Feb 2014 06:10
URI: http://oar.icrisat.org/id/eprint/6388
Official URL: http://link.springer.com/article/10.1007/BF0026434...
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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