Efecto de diferente intensidad del uso del suelo sobre propiedades del suelo y la producción de sorgo silero

In this work, soil and sorghum crop properties were studied in order to understand how various rotations affect in the long term and what effects it has on crop yields, and if possible, eliminate differences through nitrogen fertilizations, regardless of the costs that this requires. The variables studied were on the one hand chemical, with nitrogen and phosphorus at planting, On the other hand, physical properties of the soil such as stability of aggregates and infiltration and finally some components of sorghum such as implantation, number and weight of stems, tillering and finally yield. As for the rotations under study were: two rotations of continuous sorghum, one without and one with coverage, and two rotations of a pasture of fescue, white clover and lotus, with 2 and 4 years of duration. After several years with these rotations the results were clear that the presence of pastures improved almost all the characteristics, and those that did not improve were compensated by the crop itself, it was also observed that extra nitrogen fertilizations did not compensate for the differences between treatments. On the side of the duration of the pastures it was observed that it is favorable mainly when the length allows it to be in good condition, with the soil well covered and with a good specific composition, therefore, as it deteriorates the positive results are declining.