Organic fertilization and conservation practices on the yield of rainfed sorghum

The interrelations between climatic and soil conditions present in the agroecosystems of the dry zone of northern Mexico, have significant impact on the development of crops that results in impact on agricultural productivity. Soil degradation by excessive use of mechanical practices, has caused severe physical and chemical changes such as deterioration of the natural structure, loss of fertility, increased soil compaction and bulk density, and serious problems of erosion by wind and water. In order to know the influence of three organic fertilizers and soil preparation practices in the production of sorghum in San Fernando, Tamaulipas, was conducted this study. The experimental area present Vertisol soil type, and covers an area of 6 ha, which was subdivided into plots of one hectare. (Author) 6 refs.