Características agronômicas, fisiológicas e bromatológicas do trigo forrageiro em diferentes manejos de adubação e densidades de semeadura

Abstract

Due to climatic and biological factors, the cultivation of wheat was for many years restricted to the south of Brazil. However, more recently there has been a considerable expansion mainly in the Brazilian Cerrado. Wheat has shown great potential for production in the semi-arid region of Minas Gerais, since it presents great adaptability and versatility, being used for animal feed or grain production. In this sense, the objective was to evaluate agronomic, physiological and bromatological characteristics of wheat (Triticum aestivum) culture submitted to different fertilization and plantdensities. The used design was in randomized blocks in a 3 x 4 factorial scheme with 3 replications, with 3 fertilization managements (without fertilization, organomineral fertilization and mineral fertilization); and 4 sowing densities (200, 350, 500 and 650 seeds m2). The chosen wheat cultivar wasMGS brilliant. The use of mineral MAP by broadcast provides superior results for dry matter productivity (5.55 t ha-1), in relation to organomineral (4.63 t ha-1). The fertilized plots have higher plant and number of leaves. For bromatological characteristics, organomineral fertilization provides higher levels of neutral detergent fiber (56.61 %). Increasing sowing density does not affect crop productivity.