Evaluación del tipo de sorgo en la producción de forraje bajo pastoreo

The purpose of this essay is to evaluate the objectives which were planned to achieve in the project. They consist of measuring the quantity of dried forage using different kinds of sorghum as well as the management of the remaining pasture after cutting it. The experiment was carried out in Experimental Station Mario A. Cassinoni (EEMAC), Paysandú, Uruguay. (32º 22´ 31´´ S 58º 3´ 47´´ W), over Typical Eutric Brunosols soils. Treatments consist on: two varieties of forage sorghum: Talismán (BMR) and Green supremo (FS). Using the same procedure, the productivity of these grass, their components and their final quality were tested. For this experiment the field was divided into smaller plots with three blocks. Not significant difference was found in the dry matter (a bit higher than 0,05) during the time it was evaluated (5403 vs. 7270 kg/ha of DM). Total leaf and stem dry matter production adjusted to a lineal model with the height (cm) of the available forage, and these with remaining forage. There was a great variety in the obtained results due to environmental conditions. Lack of rain was crucial in the final results so that the management of the material was definitely more important than the kind of sorghum used in the experiment.