eprintid: 6338
rev_number: 9
eprint_status: archive
userid: 19
dir: disk0/00/00/63/38
datestamp: 2012-12-18 06:25:37
lastmod: 2014-02-07 05:47:01
status_changed: 2012-12-18 06:25:37
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Rao, M R
creators_name: Willey, R W
icrisatcreators_name: Rao, M R
icrisatcreators_name: Willey, R W
affiliation: ICRISAT(Patancheru)
country: India
title: Evaluation of yield stability in intercropping: Studies on sorghum/pigeonpea
ispublished: pub
subjects: s1.2
subjects: s1.4
full_text_status: restricted
abstract: Data from 94 experiments on sorghum/pigeonpea intercropping were examined for evidence that the stability of yield is greater with intercropping than sole cropping. Stability of the major component (sorghum) was examined by calculating the distribution of yields; stability of the overall intercropping system was examined by calculating coefficients of variation, by computing regressions of yield against an environmental index, and by estimating the probability of monetary returns falling below given ‘disaster’ levels. All these approaches have some merit; taking the last as an example, it was found that for a particular ‘disaster’ level quoted, sole pigeonpea would fail one year in five, sole sorghum one year in eight, but intercropping only one year in thirty-six. Intercropping gave yield advantages under a wide range of environmental conditions and there was no significant evidence that advantages were greater under stress. This is discussed in relation to possible mechanisms contributing to greater yield stability
date: 1980
date_type: published
publication: Experimental Agriculture
volume: 16
number: 2
publisher: Cambridge University Press
pagerange: 105-116
refereed: TRUE
issn: 0014-4797
official_url: http://dx.doi.org/10.1017/S0014479700010796
related_url_url: http://scholar.google.co.in/scholar?as_q=Evaluation+of+Yield+Stability+in+Intercropping%3A+Studies+on+Sorghum%2FPigeonpea&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
citation:   Rao, M R and Willey, R W  (1980) Evaluation of yield stability in intercropping: Studies on sorghum/pigeonpea.  Experimental Agriculture, 16 (2).  pp. 105-116.  ISSN 0014-4797     
document_url: http://oar.icrisat.org/6338/1/S5%20%20%202044.pdf