eprintid: 9704
rev_number: 11
eprint_status: archive
userid: 1305
dir: disk0/00/00/97/04
datestamp: 2016-09-29 05:21:17
lastmod: 2017-05-24 05:29:56
status_changed: 2016-09-29 05:21:17
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Yoneyama, T
creators_name: Nambiar, P T C
creators_name: Lee, K K
creators_name: Srinivasa Rao, B
creators_name: Williams, J H
icrisatcreators_name: Yoneyama, T
icrisatcreators_name: Nambiar, P T C
icrisatcreators_name: Lee, K K
icrisatcreators_name: Srinivasa Rao, B
icrisatcreators_name: Williams, J H
affiliation: ICRISAT (Patancheru)
affiliation: National Agriculture Research Center Tsukuba (Ibaraki)
country: India
country: Japan
title: Nitrogen accumulation in three legumes and two cereals with emphasis on estimation of N2 fixation in the legumes by the natural 15N-abundance technique
ispublished: pub
subjects: S1
subjects: s355
full_text_status: restricted
keywords: N2 fixation, Natural 15N abundance, N-difference method, Atmosphere-derived N, Non-nodulating genotype, Cereals, Legumes
note: ICRISAT Journal Article No. 876
abstract: N accumulation and natural 15N abundance in three legumes (groundnuts, cowpeas, and soybeans) and in two cereals (sorghum and maize) were investigated over two seasons in Alfisols with and without N fertilization. Using the N uptake and natural 15N abundance of non-nodulating plants as the indication of N derived from soil and fertilizer, the per cent N derived from atmospheric N2 was calculated for nodulated plants. In the first experiment, the groundnut genotype contained 85% atmosphere-derived N, but the percentage decreased with N application. Estimates of atmosphere-derived N by the N-difference and 15N-abundance techniques gave identical results. The percentages of atmosphere-derived N estimated by the two methods at different stages of groundnut growth were also similar. In the second experiment, atmosphere-derived N was estimated in plants grown with 0–200 kg ha-1 applied N. The estimated atmosphere-derived N ranged from 42% to 61% for groundnuts from 33% to 77% for cowpeas, and from 24% to 48% for soybeans, depending on the amount of N applied. Inoculation with a Brady rhizobium strain increased the percentage of atmosphere derived N in soybean plants grown without any fertilizer N. The natural 15N abundance of sorghum and maize was very close to that of the non-nodulating groundnut, suggesting that these cereals can be used as reference plants in the estimation of atmosphere-derived N by the natural 15N-abundance method.
date: 1990-02
date_type: published
publication: Biology and Fertility of Soils
volume: 09
number: 01
publisher: Springer-Verlag
pagerange: 25-30
id_number: 10.1007/BF00335857
refereed: TRUE
issn: 0178-2762
official_url: http://dx.doi.org/10.1007/BF00335857
related_url_url: https://scholar.google.co.in/scholar?q=Nitrogen+accumulation+in+three+legumes+and+two+cereals+with+emphasis+on+estimation+of+N+2+fixation+in+the+legumes+by+the+natural+15N-abundance+technique&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
citation:   Yoneyama, T and Nambiar, P T C and Lee, K K and Srinivasa Rao, B and Williams, J H  (1990) Nitrogen accumulation in three legumes and two cereals with emphasis on estimation of N2 fixation in the legumes by the natural 15N-abundance technique.  Biology and Fertility of Soils, 09 (01).  pp. 25-30.  ISSN 0178-2762     
document_url: http://oar.icrisat.org/9704/1/bf00335857.pdf