Boron Dynamics in Agricultural Soils of the Cerrado: Study on Sources, Doses and Leaching

The objectives of this study were: to evaluate the leaching potential B in a Latossolo Vermelho-Amarelo (Oxisol) as function sources and doses micronutrient; among tested (boric acid, ulexite commercial source H2 Boro), determine one with lowest potential; losses at different each soil layer evaluated; identify chemical physical variables soils that influence leaching. For that, two experiments were conducted greenhouse. first soil, three under five (0; 12; 24; 36; 48 kg ha-1), whereas second experiment evaluated attributes on using randomly collected 22 localities southeastern Goiás, Brazil. Regardless dose applied, led soluble content profile analyzed also leachate. Boric acid was only showed behavior relation layers In from 21 30 cm, is content. behaviors more sources, case boric Boro (H2 Agrosciences - Monoethanolamine borate), regardless dose, are very similar, being highly leachable Oxisol used. Soils clayey texture higher values H+Al CEC able retain contents upper portion their profiles (layers 0 10 cm 11 20 cm), but sandy sum bases greater by