La Humedad del Suelo Cultivado con Maíz y la Relación con la Temperatura Radiativa de su Cubierta Vegetal.

Transpiration (T) is a physiological process that consists in the transfer of water vapour between substomatal cavities to the atmosphere, this process require that hydrical potential of the atmosphere be smaller that ones of the structures beginning from T have place. The T moreover of contribute to the movement of water in a plant and with that to the extraction of nutrients of soil, produce a heat releasing, regulating the temperature of the leaf. Therefore if we measure the temperature of the leaf in a crop of interest, we could know about the hydric conditions of the soil. This Work presents a mathematical function, relating the radiative temperature of the canopy (Tc) with the volumetric humidity of the soil Hs. This relationship was obtain then of a sequence of measurements in the campaign in 2005-2006 in a crop corn. The leaf temperature in the crop were measured with a portable radiometer witch bases in the radiative temperature of black body, and a soil moisture sensor, which uses dielectric permittivity of the soil to sense soil mositure. The radiative temperature of a crop could be obtained with satellites imaginery and using this equation would allow estimate the hydric condition of a canopy. As future work, rest the validation of this equation and his functionality, analyzing your response under an other soil and another crop.