ADUBAÇÃO FOLIAR COM BORO NO CULTIVO PASTAGENS

Abstract

The study aimed to evaluate the effect of foliar fertilization with boron on grass plants of the genus Panicum and Brachiaria. The experiment was carried out at Fazenda Santa Luzia, located in the municipality of Serranópolis - GO. The experimental design used was a randomized block in a 5 x 5 factorial scheme, where the factors consisted of five grasses of the genus Panicum maximum and Brachiaria and five doses of B (0, 250, 500, 750, and 1000 g of B ha-1), with four replications. The forages used were Panicum maximum cv. BRS Zuri, Panicum maximum cv. Massai, Brachiaria Brizantha cv. BRS Piatâ, Brachiaria Brizantha cv. Marandu, Brachiaria Brizantha cv. MG-5. The results obtained were subjected to analysis of variance, then the Tukey test was applied at 5% probability for comparison of grass averages, and regression equations were adjusted for the effect of B doses. After the analysis of the results, it arrived the conclusion is that: in sandy soils with low levels of boron, the foliar application of this element at thirty days after seedling emergence, increases the production of dry matter and improves the bromatological quality of biomass with significant increments of crude protein.