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Simulation of soil water balance and partitioning of evapotranspiration of maize grown in two growing seasons in Southern Brazil Ciência Rural
Ávila,Viviane Schons de; Petry,Mirta Teresinha; Carlesso,Reimar; Martins,Juliano Dalcin; González,María Gabriela; Oliveira,Zanandra Boff de; Nunes,José Nilton Vieira; Menegaz,Sônia Thais.
ABSTRACT: The objective of this study was to simulate the variation of the available soil water during maize crop growth, in two different sowing times (first and second growing season), using a drip irrigation system. The treatments consisted of different irrigation strategies (full to deficit). The SIMDualKc simulation model was used to determine the daily soil water balance and crop evapotranspiration using the dual crop coefficient approach. Soil, climate, crop and irrigation parameters were used as input data. Two experiments were carried out in a rainout shelter composed of two metallic structures (16x10m) in the city of Santa Maria, Rio Grande do Sul, Brazil, during 2010/11 (second crop, season 1) and 2011/12 (first crop, season 2) growing seasons,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SIMDualKc; Dual coefficient; Evapotranspiration partitioning; Soil evaporation; Crop transpiration.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200253
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Numerical modeling of actual evapotranspiration of a coffee crop Scientia Agricola
Cesanelli,Andrés; Guarracino,Luis.
The evapotranspiration estimation has great importance to crop productivity and agricultural water management. In this study, evapotranspiration is analyzed in a coffee (Coffea arabica L.) crop located in Piracicaba, state of São Paulo (Brazil) using a numerical method based on the simulation of both water flow and crop activity in the unsaturated zone of the soil. Actual evapotranspiration is estimated from potential evapotranspiration using water stress functions, meteorological data, soil hydraulic parameters, crop coefficients and leaf area index values. Crop transpiration and soil evaporation are individually quantified improving the analysis of the evapotranspiration process. The numerical procedure can predict periods of crop water stress and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil evaporation; Crop transpiration; Unsaturated zone; Mathematical models.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000400001
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