Estudo do comportamento térmico do solo para solarização em latossolo

Abstract

This research had the theme of soil treatment through the method of solarization with polyethylene film. Solarization aims to emphasize a sustainable method of natural resources, through the use of solar radiation in the fight against pathogenic microorganisms present in the soil. The objective of this study was to evaluate the soil temperature profile during the solarization process and to verify its efficiency for sustainable soil improvement. Methodologically, by collecting and recording data of environmental parameters that are most important for solarization, such as variation and temperature correlations, it was possible to perform a comparison of the resulting temperatures with and without the solarization method, demonstrating the applicability or not of the experiment. In addition, statistical methods were used to obtain equations that define the behavior of temperatures at the different depths of the soil analyzed in this study. With the results, a maximum temperature of 33.34 ºC was observed in the soil surface that did not receive the polyethylene cover, and 36.72 ºC in the surface of the solarized soil. The coefficient of determination for the area that did not receive solarization varied between 0.61 and 0.50, while for the solarized soil, the R² ranged between 0.63 and 0.36. To obtain more advantageous results, a longer solarization period is proposed, as well as a larger area of application, which can contribute to the accumulation of heat between the soil surface and the plastic film.