Boro e níquel em soja (Glycine max): doses e épocas de aplicação

Abstract

Boron (B) and Nickel (Ni) are micronutrients that are crucial to the proper development and production of soybeans, since they are directly or indirectly related to the metabolic processes essential to the development of this crop. The objective of this study was to evaluate the influence of foliar application of B and Ni in different seasons and doses on soybean agronomic variables. The experiment was conducted at the São Marcos farm, belonging to the Itaquerê group in the municipality of General Carneiro-MT, in a completely randomized block design, consisting of nine treatments (control group plus eight groups composed of different doses and active 10% B products active Phos Ni 4.5% concentration, applied at three different stages of soybean development) and four replicates. Number of pods with 1, 2 and 3 grains, weights of pods, leaf bottom, upper, stem, dry and wet weight, wet + 13% moisture and productivity in kg and bags were evaluated. The data were analyzed by the F test at 5% probability. There were no significant differences between the variables analyzed by the F test, demonstrating that the treatments did not affect soybean development. Thus, it is concluded that the foliar application of B and Ni did not influence soybean development and productivity.