Sistema computacional aplicado ao cálculo da demanda hídrica georeferenciada para a cultura do feijão

Neto, Francisco S. Dantas; Costa, José Maria Nogueira da; Soares, Antônio Alves; Sediyama, Gilberto Chohaku; Costa, Luiz Cláudio

doi:10.1590/s1415-43662005000200011

Cited by 2 publications

(1 citation statement)

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“…These values met crop water requirements during growing cycle found by some authors conducting experiments in Brazil (DANTAS NETO et al, 2005;NÓBREGA et al, 2001;SILVEIRA;. Additionally, Doorenbos and Kassam (2000) concluded that maximum bean yield is achieved when 300 to 400 mm is available during the cycle, depending on the local edaphoclimatic conditions.…”

Section: Rainfall and Irrigationsupporting

confidence: 63%

Simulation of bean crop growth, evapotranspiration and yield in Paraná State by the CROPGRO-Drybean model

et al. 2011

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ABSTRACT. The performance of the CROPGRO-Drybean model for the prediction of soil water balance, as well as growth components and bean crop yield, was assessed using data from two field experiments conducted at the State University of Maringá Iirrigation Technical Center, Paraná, Brazil, (latitude 23º27'S, longitude 51º57' and altitude 542 m) during the 2005 and 2006 growing seasons. This assessment aimed to analyze growth components, evapotranspiration and bean crop yield for the edaphoclimatic conditions of the area as simulated by the CROPGRO-Drybean model. This is a model for legumes, and it is grouped in a Decision Support System for Agrotechnology Transference (DSSAT). The model simulates growth, development and yield components of beans as a function of daily climatologic elements for each soil's specific conditions. It is possible to affirm that water deficit during flowering caused the model to penalize yield severely. It showed discrepant values in leaf area index simulation, and also accentuated discrepancies between measured and simulated values of soil moisture on the day following rainfall. Correlations between measured and simulated values of soil moisture exceeded 70% in both experiments. Yield was underestimated by the model in both experiments.

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Section: Rainfall and Irrigationsupporting

confidence: 63%

Simulation of bean crop growth, evapotranspiration and yield in Paraná State by the CROPGRO-Drybean model

et al. 2011

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Impactos das mudanças climáticas na demanda de irrigação da bananeira na Bacia do Jaguaribe

Gondim¹,

Castro

Teixeira

et al. 2011

Rev. bras. eng. agríc. ambient.

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RESUMOAs mudanças climáticas têm potencial de alterar os processos do ciclo hidrológico, tais como precipitação, que afeta o escoamento superficial, temperatura e umidade relativa do ar devido à sua estreita relação com evaporação e vazão em corpos hídricos e evapotranspiração das plantas. O objetivo do presente trabalho foi analisar os impactos das mudanças climáticas na necessidade hídrica da cultura da bananeira, considerando-se cenários de mudanças climáticas em escala local, em nível de bacia hidrográfica (rio Jaguaribe, no trecho compreendido entre as barragens do Castanhão e de Itaiçaba). Um conjunto composto de uma baseline (climatologia de base) do modelo de 1961-1990 e de projeções climáticas, foi processado. Os dados foram então extraídos considerando-se as coordenadas geográficas da região em estudo, com resolução de 0,44 x 0,44 º , a fim de abranger toda a área. Estimou-se a evapotranspiração de referência (ETo) através de dados da temperatura média mensal e se projetou uma elevação na necessidade hídrica bruta média anual para 2040 com relação às condições iniciais, de 1.989 mm para 2.536 mm e 2.491 mm (27,50 e 25,24%) para os cenários A2 e B2, elaborados pelo Painel Intergovernamental de Mudanças Climáticas, respectivamente. Palavras-chave: evapotranspiração, irrigação, SIGImpact of climate change on irrigation requirement of banana in Jaguaribe river Basin, Ceará, Brazil ABSTRACT Climate change has a potential to impact hydrologic cycle processes, such as rainfall, which affect runoff, temperature and air humidity that have relationship to evaporation over water bodies and plant evapotranspiration. The purpose of this study was to assess impacts of climate change on irrigation water demand of banana, at the river basin level (Jaguaribe river,

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Sistema computacional aplicado ao cálculo da demanda hídrica georeferenciada para a cultura do feijão

Cited by 2 publications

References 1 publication

Simulation of bean crop growth, evapotranspiration and yield in Paraná State by the CROPGRO-Drybean model

Simulation of bean crop growth, evapotranspiration and yield in Paraná State by the CROPGRO-Drybean model

Impactos das mudanças climáticas na demanda de irrigação da bananeira na Bacia do Jaguaribe

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