FONTES E DOSES DE BORO NA CULTURA DA SOJA

Abstract

Among the micronutrients essential to plants, boron can be important functions in the plant, made available to plants through base and foliar fertilization. Thus, the present study aims to evaluate the effects of different sources and doses of boron on soybean. The study was reported on a property in the municipality of GO - GO. The experimental design adopted was a randomized block, in a 4x3 factorial scheme, with four doses of Boron (0, 4 doses2, 4 and 6 kg ha) and three sources (boric acid, borax and ulexite). The agronomic reproductive traits were plant heights, number of insertion nodes of the first plant, number of reproductive nodes of the first plant, number of reproductive nodes on the lateral stems, total number of nodes per plant and number of grains per plant, productivity and mass. of a thousand grains. There was no significant interaction between sources and doses in any of the characteristics. The number of reproductive nodes in the main rush was higher with the borax source, which formed 10.19 nodes. The productivity was 3.3% higher with a dose of 4 kg ha of B, in relation to the Control and the average productivity was 3823.57 kg ha. The sources used are capable of providing B for the conditions in which the study was determined. A dose of 4 kg ha promotes 3.3% more grain production than the control