The objective of this field experiment was to evaluate the effect of liming and phosphorus application on the structural stability of a clayey acid soil with high organic matter content, a typical feature of the southern Brazilian plateau. The study was carried out on a Brown Latosol (Haplohumox), in Lages, State of Santa Catarina, Brazil, in a split plot arrangement of a completely randomized block design. Treatments consisted of lime application at rates of 0, 4.5, and 9.0 Mg ha-1 at the […]

Liming influences some electrochemical properties of soils of variable charge that may affect clay dispersion and aggregate stability. This hypothesis was tested after five years of incorporation of increasing rates of limestone (0, 4.5, 9.0, 13.5 and 18 t ha-1) into a Brown Latosol (Haplohumox). Dolimitic limestone was plowed down to 17 cm depth into the soil during the spring of 1992 when field plots began to be cultivated annually with continuous corn. Soil samples used in this work were […]