The no tillage using covering cultures about the production dry mass surface in the soil. The present work had for objective to study the production and acting of two vegetable coverings crotalária juncea (Crotalaria juncea L.) and mucuna-cinza (Stilozobium niveum), in three systems of handlings (roll-knife, crusher of straws and herbicide), and and the effective field capacity. The experiment was accomplished in area of Laboratório de Máquinas e Mecanização Agrícola (LAMMA), of the Departamento de Engenharia Rural, UNESP; Jaboticabal - SP, with experimental design consisted of a factorial array 3x2 with completely randomized blocks, origin six treatments with four repetitions. They were measuring and analyzed parameters of production of dry mass of the coverings vegetable after the sowing and handling, displacement speed and the effective field capacity execute for each group (tractor-equipment). The analysis of the obtained values allowed verifying that the factor handling didn't interfere in the mass it evaporates of covering vegetable. The cultures present similar masses to the 30; 71 and 125 days after the sowing, differing to the 97 days, was the Crotalaria juncea L. present larger mass earnings. In the powders handling the two cultures have masses similar to the 30; 51 and 71 days after the handling, in other words, during whole the experiment. The handling with herbicide present larger effective field capacity.
mucuna-cinza; crotalária juncea; effective field capacity
