Variáveis de acúmulo de massa seca e teor nutricional de Urochloa híbrida submetida à aplicação de bioestimulante

Abstract

The native pastures were replaced gradually by cultivated pasture, looking for species more productive and that best suit the environmental conditions, in addition to new technologies that assist the pasture to reach its maximum productive potential. The objective of this study was to evaluate the herbage mass, morphological components and nutritive value of hybrid Urochloa Convert HD 364 through the application of the stimulator. The experiment was carried out in the experimental area of the forragicultura nucleus at farm Capim Branco, belonging to the Federal University of Uberlândia, in the municipality of Uberlândia - MG, at an altitude of 805 meters, between november 2014 and september 2015. Experimental design was randomized blocks (DBC) with 6 treatments and 4 replicates, treatments were composed by one control (absence of biostimulant) and different doses of biostimulant: 0,25; 0,50; 0,75; 1,00 and 1,25 L ha-1 . In all treatments a dose of 30 kg ha-1 of nitrogen was applied following the recommendation for production with high technological level. The evaluations were: leaf content and accumulation of macro and micronutrients; accumulation of dry mass (DM) and forage accumulation rate (TA); concentration of crude protein (PB), neutral detergent fiber (FDN), acid detergent fiber (FDA); morphological components (percentage and accumulation of dry mass) and ta of leaves, stem and dead material and root mass. The application of the biostimulant promoted increases in the production of dry mass of forage, leaves and stem, in this way the producer has a tool to increase its production.