Availability of boron in clayey and sandy soil due to the application of different borated sources in soybean cultivation

Abstract

Boron deficiency in the soil is commonly found throughout the country, mainly in cerrado soils, making it extremely necessary to fertilize such a micronutrient. Therefore, this study aimed to evaluate the availability of boron in clay and sandy soils with different sources of borated fertilizers in soybean cultivation in the 2018/19 soybean harvest. The availability of boron was evaluated by the method with hot water extraction in a soil sample in different soil layers and at a different time of collection. The experiment was assembled in randomized blocks (DBC), with 5 treatments and 4 replications, as follows: split boric acid: twice, total boric acid: one application of the integral dose, Granulex ®️, Produbor®️ and control treatment Granulex provided higher B content in the soil in the 1st collection, in the 10-20 cm layer in cl In sandy soil, the different sources did not defer under the availability of B at all depths and collections. In general, clayey soils retain B more when compared to sandy soils

Keywords

• soil fertility, micronutrient , boron, fertilizers, leaching