Efeito da aplicação de calcário e micronutrientes em latossolo amarelo da Amazônia Central

Abstract

The effect of different levels of lime, with and without micronutrients, was tested on soybeans in a Central Amazonian oxisol yellow latosol under differents soil management practices: cutting and burning of primary forest; cutting of primary forest with mechanical clearing; cutting and burning of secundary forest. Treatments of different levels of lime (2, 3 and 5 ton/ha) without micronutrients did not differ statiscally from the treatment without lime. Significant increasses in yield were obtained with lime and micronutrients. Soil management 2, i. e., cutting of primary forest with mechanical clearing, presented low yields in most treatments. Nutrient availability and soil management of oxisols in the Amazon region are discussed.