ALTERAÇÕES DE ATRIBUTOS QUÍMICOS PELA CALAGEM E GESSAGEM SUPERFICIAL COM O TEMPO DE INCUBAÇÃO

Abstract

Liming is an alternative to correct the consolidated surface acidity and gypsum allows the supply of calcium and reduction of aluminum saturation in subsurface layers of soils in Brazilian Cerrado. The objective of this study was to evaluate the correction of acidity of ground the effects of superficial liming and gypsum on Ultisol cultivate. The experiment was carried out at the greenhouse of Soil Laboratory, at Federal University of Tocantins (Brazil) to evaluate of application of limestone and gypsum, during three periods of collection (30, 90, and 150 days after correction) and three depths of collection (0-5, 5-10 and 10-15 cm) in Ultisol of Tocantins State (factorial 2x3x3), with four repetitions. After the collections had been analyzed the soil chemical properties (pH, K, Here, Mg, H, Al, CTC, and V%). The surface applied lime was effective in neutralizing soil acidity, at a depth proportional the time. The application of gypsum improved the ground in depth, increasing the Ca, beyond diminishing aluminum.