Stable Infiltration Rate in a Yellow Red Argissol in Corn Crop and Guandu Coverage

Abstract

This research was carried out in an area in the rural campus of the Federal University of Sergipe (UFS), which studies the impact of soil management changes on production and physical soil attributes during fifteen years. The area was divided into three portions, treated with no-tillage, minimum tillage and conventional tillage. The aim of this work was to compare the stable infiltration rate in a yellow red Argisol in different managements and in a succession of sweet corn and guandu as soil cover, analyzing the impact of the agricultural use and the suitability of the Horton models (1940), Kostiokov (1932), Kostiokov-Lewis (1945) and Phillip (1957). The stable infiltration rate was determined in each plot using the double concentric ring methodology. The VIBK software was used to determine the estimated values of the stable infiltration rate by the mathematics models. In order to evaluate the performance of the infiltration values obtained in the field in relation to the values calculated by the models, comparative analyzes of the results were performed statistically through the determination coefficient (R 2 ). Statistical indices were also determined, such as residual mass coefficient (RMC), coefficient of adjustment (CA) and efficiency (EF