Data/hora: 10/06/2024 01:15:51

Biblioteca(s): 	Embrapa Agricultura Digital; Embrapa Unidades Centrais; Embrapa Uva e Vinho.	
Data corrente: 	13/05/2013	
Data da última atualização: 	12/04/2019	
Autoria: 	MONTEIRO, J. E. B. de A.; AZEVEDO, L. da C.; ASSAD, E. D.; SENTELHAS, P. C.	
Afiliação: 	JOSE EDUARDO B DE ALMEIDA MONTEIRO, CNPUV; Letícia da Costa Azevedo, CNPTIA; EDUARDO DELGADO ASSAD, CNPTIA; Paulo Cesar Sentelhas, ESALQ/USP.	
Título: 	Rice yield estimation based on weather conditions and on technological level of production systems in Brazil.	
Ano de publicação: 	2013	
Fonte/Imprenta: 	Pesquisa Agropecuária Brasileira, Brasília, v. 48, n. 2, p. 123-131, fev. 2013.	
Idioma: 	Inglês	
Conteúdo: 	Abstract - The 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.	
Palavras-Chave: 	Crop simulaton model; Crop yield forecast; Eficiência do modelo; Eficiência do moldelo; Model efficiency; Modelo agroecológico; Modelo de simulação de cultura; Water deficit.	
Thesagro: 	Arroz; Clima; Deficiência hídrica; Meteorologia; Modelo de simulação; Previsão de safra.	
Thesaurus Nal: 	Crop yield; Plant-water relations; Simulation models.	
Categoria do assunto: 	--
X Pesquisa, Tecnologia e Engenharia	
URL: 	http://www.scielo.br/pdf/pab/v48n2/48n02a01.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/83303/1/48n02a01.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/82713/1/Rice-yield-estimation.pdf	
Registro original: 	Embrapa Uva e Vinho (CNPUV)	
Exemplares: 	AI-SEDE - (54505-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPUV - (14621-1) - UPC - AP - DD -  -  -  - DIS
CNPTIA - (17435-1) - UPC - AP - DD -  -  -  - DIS