A parsimonious crop-water productivity index: an application to Brazil.

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dc.contributorMARCO P. MANETA, UNIVERSITY OF CALIFORNIA
dc.contributorPURNENDU N. SINGH, UNIVERSITY OF CALIFORNIA
dc.contributorMARCELO TORRES, UNIVERSITY OF CALIFORNIA
dc.contributorWESLEY W. WALLENDER, UNIVERSITY OF CALIFORNIA
dc.contributorSTEPHEN A. VOSTI, UNIVERSITY OF CALIFORNIA
dc.contributorLINEU NEIVA RODRIGUES, CPAC
dc.contributorLUIS HENRIQUE BASSOI, CPATSA
dc.contributorJULIE A. YOUNG, UNIVERSITY OF CALIFORNIA.
dc.creatorMANETA, M. P.
dc.creatorSINGH, P. N.
dc.creatorTORRES, M.
dc.creatorWALLENDER, W. W.
dc.creatorVOSTI, S. A.
dc.creatorRODRIGUES, L. N.
dc.creatorBASSOI, L. H.
dc.creatorYOUNG, J. A.
dc.date2011-04-10T11:11:11Z
dc.date2011-04-10T11:11:11Z
dc.date2010-01-27
dc.date2009
dc.date2017-04-12T11:11:11Z
dc.date.accessioned2026-07-07T05:39:46Z
dc.descriptionReducing poverty in rural areas of developing countries requires sustained and sustainable increases in agricultural water productivity. However, aside from traditional measures of precipitation, little is known about water available to farmers or how productively they use it. We present a crop-water productivity index (a ratio of the value of annual crop production to a dimensionless potential water availability index) for large water basins using readily available low-resolution data. The index is transferable, permits direct inter-basin comparisons, and is simple to calculate. We calculate the index for each municipality in the São Francisco river basin in Brazil. No clear patterns linking water availability and value of agricultural output are evident, even though clusters of municípios with high- and low-crop-water productivity emerge, and the former may be useful in guiding policies aimed at increasing water productivity. Finally, analyses of the effects of information uncertainty on the crop-water productivity index suggest that the returns to agricultural investments in certain places in the São Francisco river basin are more risky than others. Improvements in data quality and quantity can help refine estimates of the index and reduce their uncertainty. Key words: water productivity, irrigation, agricultural productivity, crop-water productivity index, water availability index, uncertainty propagati
dc.identifierArea, v. 41, n. 1, p. 94-106, 2009.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/631357
dc.identifier.urihttp://hdl.handle.net/123456789/497417
dc.languageeng
dc.rightsopenAccess
dc.subjectProdutividade agrícola
dc.subjectProdutividade hídrica
dc.subjectÍndice de produtividade
dc.subjectIrrigação
dc.subjectBacia Hidrográfica
dc.subjectDesenvolvimento Agrícola
dc.subjectManejo de Água
dc.subjectSistema de Cultivo
dc.subjectIrrigation
dc.titleA parsimonious crop-water productivity index: an application to Brazil.
dc.typeArtigo de periódico

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