The objective of this study was to evaluate soil correction in the implantation of the no-till system in an Oxisol of the Cerrado, Selvíria – MS, Brazil (20º 22´ S, 51º 22´ W). The treatments consisted of five lime application forms, in only one or split rates and two cover crops. Liming without incorporation, independent of the application form, corrected soil acidity and increased Ca and Mg levels in the 0-0.05 m layer; in the other layers these attributes were […]

The low reactivity of lime below the application layer is mainly due to its low solubility, to the increase in soil negative charge in the applied zones, and to the short permanence of anions of added anions in the soil solution. This study was carried out to evaluate the effect of anions added as potassium salts on increasing the reactivity of surface-applied limestone. The experiment was carried out in 2005 on a Haplumbrept (360 g kg-1 clay, 60 g kg-1 organic matter, and […]

Lime mobility and soil acidity correction can be influenced by liming management and the quantity and quality of soil organic matter. Acidity neutralization in function of the lime incoporation and surface liming was evaluated in a red Latosol (Oxisol) under different antecedent vegetation covers (eucalyptus, forest, pasture and pine). The study was carried out from November 2002 to January 2003 at the Soil Science Department of the Lavras Federal University. After 30 days of incubation of soils with lime, the […]

Lime incorporation is not desirable in no-tillage systems. Lime is therefore applied on the soil surface, concentrating the product on the first few centimeters of the profile. We evaluated the aftereffects of dolomitic limestone (2.0, 4.9 and 7.8 t ha-1) application, either on surface or incorporated, on the deeper layers of a Typic Haplustox from the Brazilian Cerrado. Soil samples were collected at six, 18 and 30 months after liming at depths of 0-5, 5-10, 10-20, and 20-40 cm. After six months the pH, […]

Liming alters chemical soil attributes and favors root development, but its efficiency depends on the incorporation form and the physical and chemical characteristics of the soil. This experiment was carried out to evaluate the efficiency of incorporated or surface liming seven years after its application on a Hapludalf under no-tillage system and located in Santa Maria, RS, Brazil. The replicated treatments consisted of four surface lime rates (0.0; 2.0, 8.5 and 17.0 t ha-1), incorporated by one plowing followed by two diskings. […]