Recuperação de área de pastagem degradada com uso de adubação e bioestimulantes

Abstract

Pastures are the foundation of world livestock, however, the negative scenario of soil degradation in poorly managed pastures needs dissemination, encouragement of conservation practices and assistance from competent bodies before taking punitive action. The general consensus on the importance of soil organic matter (MOS) in its quality directs research towards management practices that aim at the contribution and conservation of MOS, given its loss, as one of the main culprits in the process of soil degradation. A functionally active portion of the microbiota without launching natural processes within which nutrient cycling and nitrogen biological correction. The use of biostimulants in forage growth advances as promising for the development of sustainable technologies in the recovery of degraded pastures. Given the above, this project aimed to recover pastures in areas with conditions of high level of degradation subjected to the use of biological inputs in two forage species and reduced doses of fertilization. The use of fertilization promoted greater growth of Brachiaria brizantha cv. Marandu, a 40% reduction in the recommended dose was sufficient for greater plant growth. On the other hand, the use of fertilizers and as evaluated biotechnologies did not obtain results for the growth of Stylosantes cv. Large field. Soil scarification reduced root penetration resistance by 40%. The one-year evaluation period of the basic exercises is short to promote changes in the chemical and biological attributes of the soil.