Rice yield estimation based on weather conditions and on technological level of production systems in Brazil.

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dc.contributorJOSE EDUARDO B DE ALMEIDA MONTEIRO, CNPUV; Letícia da Costa Azevedo, CNPTIA; EDUARDO DELGADO ASSAD, CNPTIA; Paulo Cesar Sentelhas, ESALQ/USP.
dc.creatorMONTEIRO, J. E. B. de A.
dc.creatorAZEVEDO, L. da C.
dc.creatorASSAD, E. D.
dc.creatorSENTELHAS, P. C.
dc.date2013-05-23T11:11:11Z
dc.date2013-05-23T11:11:11Z
dc.date2013-05-23
dc.date2013
dc.date2019-04-12T11:11:11Z
dc.date.accessioned2026-07-07T11:21:40Z
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.
dc.identifierPesquisa Agropecuária Brasileira, Brasília, v. 48, n. 2, p. 123-131, fev. 2013.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/958696
dc.identifier.urihttp://hdl.handle.net/123456789/505119
dc.languageeng
dc.rightsopenAccess
dc.subjectModelo de simulação de cultura
dc.subjectEficiência do modelo
dc.subjectMeteorologia
dc.subjectClima
dc.subjectArroz
dc.subjectDeficiência Hídrica
dc.subjectPrevisão de Safra
dc.titleRice yield estimation based on weather conditions and on technological level of production systems in Brazil.
dc.typeArtigo de periódico

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