Doses e formas de incorporação de calcário em um Latossolo Vermelho Distroférrico

Abstract

Corn productivity can be affected when the soil is compacted and has high soil acidity, so practices such as liming, incorporated or not, can be beneficial for better productivity. Thus, the objective was to evaluate the physical properties of the soil as a function of doses and method of limestone incorporation. The experimental design was in strips containing ap-proximately 2.03 ha. The treatments used were four doses of limestone where dose 1- (5800 kg ha-¹); dose 2- (9600 kg ha -¹); dose 3- (13400 kg ha-¹); and dose 4- (17400 kg ha-¹), these doses were incorporated in three ways, being: A- (36” grid); B- (moldboard plow); and C- (subsoiler). The physical attributes of the soil evaluated were soil density, gravimetric mois-ture, volumetric moisture, total porosity, macroporosity, microporosity, resistance to penetration and clay dispersed in water. The application of lime in increasing doses promoted improvements in the physical properties of the soil, with the dose of 17400 kg ha-1 being the one that presented the best results for the variables analyzed, except for soil density. The method of incorporating limestone with the subsoiler was effective on the physical properties of the soil.