Biofertilizante caprino no desenvolvimento de Urochloa ruziziensis

Urochloa ruziziensis plants constitute forage resource because its biomass production and chemical-bromatologic composition. Increments in these parameters can be obtained by improving the soil fertility and plant nutrition. In this sense, biofertilizers constitute an alternative source of organic fertilizer with potential application in the production of forage plants, enabling improvements in their production, morphogenic development and chemical-bromatologic composition. Thus, the aim of this study was to evaluate the effect of biofertilizer derived from goat droppings in the initial production of aerial biomass, in the chemical-bromatologic composition, structural and morphogenetic characteristics of Urochloa ruziziensis plants. We conducted the experiment in a completely randomized design with five doses of goat biofertilizer (0, 3, 5, 7 and 9 %) in six replicates. The application of goat biofertilizer as of 5 % provided greater accumulation of aerial dry biomass with improvement in dry matter, organic matter, neutral and acid detergent fiber. On the other hand, there was an opposite effect for mineral matter and hemicellulose. For the parameters of plant growth, the biofertilizer studied promoted increase (p<0.05) in sward height, with linear increase, greater foliar elongation and life duration at doses of 3 and 5 %, respectively. We conclude that the goat biofertilizer has potential for application in Urochloa ruziziensis plants, recommending the dose as of 5 %, having benefits for the biomass production and increases in morphogenic and chemical-bromatologic composition.