Propiedades del suelo bajo la acción de dos sistemas de labranza en el maíz.

Up to 71.23% of the soil in Cuba presents affectations due to degradation, of there the importance of looking for new alternatives to attenuate these processes. The present work evaluates the behavior of some physical and chemical properties of the soil under the action of two tillage systems (conventional and conservationist), the first based on disks implements and the second in implements with horizontal-vertical cutting. For that were took five sampling points throughout a diagonal, carrying out measurements to three different depths 0-10, 11-20, 21-30 cm. The results indicate favorable changes in favor of the conservation tillage with a small decrease of the apparent density and the compaction and a little increase of the content of organic matter. Also, when carrying out a timing in order to determine the productivities and the consumption of fuel, was obtained a saving of fuel of 7.75 L·ha-1 and an increment of the productivity of 223.83 kg·ha-1. [ABSTRACT FROM AUTHOR]