Efeito do tempo de aquecimento na análise textural de amostras de dois latossolos de Minas Gerais.

Abstract

The objective of this work was to etimate the heating time effects of soil samples on the texture analysis results. Horizons A and B samples from Latosols, in Minas Gerais State, were colleted and submitted to different heating times (20, 40, 60, 80 e 100 minutes) the 130ºC during sample preparation. The texture analysis was realized according to EMBRAPA laboratory routine, 1979. The obtained results showed an opposite effect to that expectted, since the values of clay fraction decreased while silt values increased which demonstrates an aggregation occurrence of the smaller fractions, in part assigned to dehydration of the particles.particles .