Efecto del contenido de humedad del suelo sobre la calidad de trabajo de un arado de tres discos.

In this study, the work quality of an integral, reversible three-disks plow was studied on a loam clay soil. The experimental design was a random, three complete block design with three repetitions. The factors under study were three levels of gravimetric humidity in soil, 10,02, 19,74, and 22,39 %, and three speeds, 4,55, 5,27, and 7,34 km h-1. The response variables were plant cover, residue incorporation index, bulk density, coefficient of expansion, and strength of the shear vane, depth and width of work. The results show that the best work quality was obtained when the gravimetric humidity of the soil was at 19,74 % y 22,39 %. [ABSTRACT FROM AUTHOR]