Estudo do calo sensível e latente obtidos por intermédio da razão de Bowen em uma cultura de soja irrigada

• Autor(a) principal: Fernandes, Edemo João [UNESP]
• Data de Publicação: 2007
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://200.145.140.50/ojs1/viewarticle.php?id=224&layout=abstract; http://hdl.handle.net/11449/69726
• topic: Air temperature; Heat fluxes; Net radiation; Crops; Heat flux; Latent heat; Thermal gradients; air temperature; Bowen ratio; crop production; irrigation system; latent heat flux; micrometeorology; sensible heat flux; soil water potential; soybean; temperature gradient; wind direction; Glycine max

The goal of this experiment was to study the latent and sensible heat variation determined by Bowen ratio from an irrigated soybean crop. A micrometeorological station with vertical displacement was constructed to maintain the same level of all measures over the canopy. The station was installed in the center of the crop, and it was over 130 m away from the main edge of the predominant wind direction. Fluxes were calculated by vertical temperature gradient determined at 0.15 and 1.15 m over the canopy. The latent heat flux was the mean energy consumer when the canopy covered the soil totally, and there were good soil water conditions. The sensible heat flux was greater when the soil was not totally covered by the canopy. The canopy was essential on the amount of latent heat dissipated by the crop.