Calagem, adubação orgânica e mineral no estabelecimento de mudas clonais de café Conilon BRS Ouro Preto na Amazônia Central

Abstract

The increasing implantation of clones of conilon coffee (Coffea canephora), with high productive potential and more nutritionally demanding, added to the expansion of coffee growing in regions with low fertility, such as the Amazon, demonstrate the need for research focused on soil fertility and mineral nutrition. of plants, in order to optimize the use of fertilizers for a more productive system. This project aimed to evaluate the influence of liming associated with organic and mineral fertilization, for the study of soil fertility, initial development and nutritional status of conilon coffee seedlings under field conditions, in a Dystrophic Yellow Latosol of central Amazonia. The experiment was carried out at the Experimental Tropical Fruit Growing Station (EEFT) of INPA-BR 174, in Manaus-Amazonas. The experimental design was carried out in randomized blocks (DBC) with five treatments (T1, control; T2, dolomitic limestone; T3, dolomitic limestone + NPK formulation (4-14-08); T4, dolomitic limestone + chicken manure; T5, limestone dolomitic + formulation (4-14-08) NPK + chicken manure) and four replications. During twelve months, biometric evaluations were carried out: plant height, number of leaves, number of orthotropic branches, base diameter. In addition to determining the concentrations of macro and micronutrients in plants and soil. The complete treatment, with liming + organic fertilizer + NPK (T5) influenced soil fertility, which reduced acidity (H+) and (Al3+) and increased Ca, Mg and Zn contents. For the biometrics, the treatment with liming + organic fertilization had superior results in relation to the others, demonstrating significant differences for the number of leaves, height and diameter of the stem. Leaf concentrations were also influenced especially by the complete treatment (T5), consequently presented positive results for the growth of the changes and in the nutritional status of the Conilon BRS Ouro Preto coffee.