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dc.contributor.authorMONTEIRO, J. E. B. de A.pt_BR
dc.contributor.authorAZEVEDO, L. da C.pt_BR
dc.contributor.authorASSAD, E. D.pt_BR
dc.contributor.authorSENTELHAS, P. C.pt_BR
dc.contributor.otherJOSE EDUARDO B DE ALMEIDA MONTEIRO, CNPUV; Letícia da Costa Azevedo, CNPTIA; EDUARDO DELGADO ASSAD, CNPTIA; Paulo Cesar Sentelhas, ESALQ/USP.pt_BR
dc.descriptionThe objective of this work was to evaluate an estimation system for rice yield in Brazil, based on simple agrometeorological models and on the technological level of production systems. This estimation system incorporates the conceptual basis proposed by Doorenbos & Kassam for potential and attainable yields with empirical adjusts for maximum yield and crop sensitivity to water deficit, considering five categories of rice yield. Rice yield was estimated from 2000/2001 to 2007/2008, and compared to IBGE yield data. Regression analyses between model estimates and data from IBGE surveys resulted in significant coefficients of determination, with less dispersion in the South than in the North and Northeast regions of the country. Index of model efficiency (E1') ranged from 0.01 in the lower yield classes to 0.45 in higher ones, and mean absolute error ranged from 58 to 250 kg ha-1, respectively.pt_BR
dc.description.uri bitstream/item/83303/1/48n02a01.pdfpt_BR
dc.publisherPesquisa Agropecuária Brasileira, Brasília, v. 48, n. 2, p. 123-131, fev. 2013.pt_BR
dc.relation.ispartofEmbrapa Uva e Vinho - Artigo em periódico indexado (ALICE)pt_BR
dc.subjectModelo de simulação de culturapt_BR
dc.subjectEficiência do modelo.pt_BR
dc.titleRice yield estimation based on weather conditions and on technological level of production systems in Brazil.pt_BR
dc.typeArtigo em periódico indexado (ALICE)pt_BR
dc.subject.thesagroDeficiência Hídricapt_BR
dc.subject.thesagroPrevisão de Safra.pt_BR
dc.ainfo.lastupdate2019-04-12 -03:00:00pt_BR
Appears in Collections:Artigo em periódico indexado (CNPUV)

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