PERDAS DE SOLO EM ARGISSOLO VERMELHO SOB CONDIÇÕES DE CHUVA NATURAL

Código

PAP073

Autores

Karina Dos Santos Falcão, Roniedison da Silva Menezes, Thiago Sandim Ximenes, Carla Fernandes Santana, Eloi Panachuki, Rafael Silva Ferreira, Felipe Das Neves Monteiro

Tema

HIDROSSEDIMENTOLOGIA NO CONTEXTO DO NEXO

Resumo

Water erosion is a natural phenomenon, however anthropogenic action interferes with its intensity. This event is considered a problem at a global level and increasingly affects the areas destined to food production due to inadequate soil management. Consequently, erosion increases and can compromise the food supply to the population. This work aimed to evaluate the relationship between rainfall erosivity and soil loss in different agricultural production systems. The work was developed in the experimental area of the State University of Mato Grosso do Sul, in Aquidauana -MS, in a soil classified as typical dystrophic Red Argisol, from flat to gently undulating topography with a mean slope of 0.03 mm -1. Soil losses were determined under natural rainfall conditions. Experimental plots with dimensions of 3.5 x 22.15 m2were used in favor of the slope of the land. The following treatments were considered: SE -soil without cultivation (control); PC -soil cultivated with maize (Zea mays) under conventional tillage; PD -soil cultivated with corn under no -tillage system. The SE treatment presented losses of soil 9 and 309 times higher than the treatments PC and PD respectively. In addition, in relation to efficiency in soil loss reduction, PD treatment proved to be more efficient than PC. The results show that although rainfall erosivity is one of the most active factors in the process of water erosion, the management system also exerts a great influence on it.