IMPLANTAÇÃO DE SISTEMA SILVIPASTORIL EM PASTAGEM DE Brachiaria Brizanta cv. Marandu COM PASTEJO CONTÍNUO DE BOVINOS

Abstract

The integrated crop-livestock-forestry systems have shown good results in agricultural production because it is a sustainable system, that integrates the tree component and the animal in the same area, helping in soil fertility and promoting animal comfort. Therefore, the objective was to evaluate different incorporation systems of forest component, at the recovery time of Brachiaria brizanta cv. Marandu pasture, already implanted with continuous cattle grazing. The experiment was carried out at the Dairy Cattle Laboratory of the IF Goiano - Campus Rio Verde with the implantation of forest arrangements of eucalyptus (Corymbia citriodora) in dense groups with three protective models and one single, totalizing four arrangements being 1, 3, 5 and 9 seedlings. With three entry times of the animals at 1, 30 and 60 days after trees planting. The seedlings survival probability per arrangement and the survival probability of at least 1 seedling per arrangement with the presence of animals for 60 days, in continuous grazing, were evaluated. After leaving the animals, the height of the plants, average crown diameter and stem thickness were evaluated in all times when the animals entered and arranged. When comparing the forage quality between the entry moments of the animals (1, 30 and 60) it was observed that the entry with 60 days provided a greater amount of dry matter and neutral detergent fiber content compared to the entry moment of 30 days. The survival probability of at least one tree per arrangement regardless of the same (1, 3, 5 and 9) was higher at entry times of 30 and 60 days. It was observed that in arrangements 3, 5 and 9 there is a greater probability of having a live tree than in arrangement 1. The results showed that it is possible to implement an integrated crop-livestock-forestry system at the same time as pasture recovery, making it more viable for animals to enter from 30 days after planting the tree seedlings and with greater probability of tree survival and greater number of seedlings per arrangement.