Avaliação de diferentes doses de nitrogênio em cobertura na cultura da aveia preta

Abstract

An economic alternative for the supply of food for ruminants are pastures, but inadequate management of growth and nutritional factors can cause the crop to show negative results. Black oat, like all grasses, requires high nitrogen (N) availability. Soil fertility, climatic conditions and management can influence the production of this forage crop. Thus, the objective of this study is to evaluate the biomass and bromatological characteristics of black oats submitted to nitrogen application at different doses and times. The experiment was developed in the municipality of Entre Rios do Sul - Rio Grande do Sul. The experimental design used was randomized block design with four repetitions. The treatments were composed of different doses of nitrogen fertilization, divided into two applications, with each application corresponding to half the final dose of the treatment. As a result, we can conclude that in relation to biomass, treatment 4, with the highest nitrogen dose, 120 kg, at the time of oat tillering was the one that presented the best results, both for green mass, height, and cane diameter. For the bromatological characteristics, the results og the application of 120 kg of nitrogen continue to show that this is the best alternative to carry out nitrogen fertilization in black oat cover.