Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/126141
Research center of Embrapa/Collection: Área de Informação da Sede - Artigo em periódico indexado (ALICE)
Date Issued: 2007
Type of Material: Artigo em periódico indexado (ALICE)
Authors: BERGAMASCHI, H.
WHEELER, T. R.
CHALLINOR, A. J.
COMIRAN, F.
HECKLER, B. M. M.
Additional Information: Homero Bergamaschi, Universidade Federal do Rio Grande do Sul - UFRGS; Timothy Robert Wheeler, The University of Reading; Andrew Juan Challinor, The University of Reading; Flávia Comiran, Universidade Federal do Rio Grande do Sul - UFRGS; Bruna Maria Machado Heckler, Universidade Federal do Rio Grande do Sul - UFRGS.
Title: Maize yield and rainfall on different spatial and temporal scales in Southern Brazil
Publisher: Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 5, p. 603-613, maio 2007
Language: en
Notes: Título em português: Rendimento de milho e chuva em diferentes escalas espaço-temporais no Sul do Brasil.
Keywords: rainfall
water deficit
critical period
deficit hídrico
modelagem
período crítico.
Description: This study aimed to establish relationships between maize yield and rainfall on different temporal and spatial scales, in order to provide a basis for crop monitoring and modelling. A 16-year series of maize yield and daily rainfall from 11 municipalities and micro-regions of Rio Grande do Sul State was used. Correlation and regression analyses were used to determine associations between crop yield and rainfall for the entire crop cycle, from tasseling to 30 days after, and from 5 days before tasseling to 40 days after. Close relationships between maize yield and rainfall were found, particularly during the reproductive period (45-day period comprising the flowering and grain filling). Relationships were closer on a regional scale than at smaller scales. Implications of the crop-rainfall relationships for crop modelling are discussed.
Thesagro: Chuva
Zea Mays.
NAL Thesaurus: crop models.
Data Created: 2008-01-14
Appears in Collections:Artigo em periódico indexado (AI-SEDE) / Embrapa Informação Tecnológica (SCT)

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