FERTILIZANTES ORGANOMINERAIS COMO ALTERNATIVA A ADUBAÇÃO MINERAL EM MUDAS DE CAFEEIRO

Abstract

Organomineral fertilizers have sufficient effectiveness and sustainability to become a viable and efficient alternative to conventional mineral fertilizer in coffee cultivation. The use of organomineral fertilizers promotes improvements in soil and plant fertility, generating environmental benefits and, consequently, making productivity more sustainable over time. Thus, the study aimed to evaluate the efficiency of organomineral fertilizers as an alternative to conventional fertilization on the initial growth characteristics of coffee seedlings. The experiment was conducted in the experimental area of the Federal University of Mato Grosso do Sul, Chapadão do Sul-MS campus. A randomized block experimental design was used, with thirteen treatments and four replications. The treatments were composed of control, mineral fertilizer and organomineral fertilizer in different proportions. In mineral fertilization, Urea, MAP and KCl were used and organomineral fertilizers in the formulation of 16-04-08 and 08-04-16, both for minerals and organominerals, doses equivalent to 25, 50, 75 and 100% of the recommendation and consisted of the isolated application of mineral and organomineral fertilizers. Assessments included plant height, stem diameter, relative chlorophyll index, crown length between the row, crown length within the row. The treatment that uses a dose of 50% of organomineral fertilizers 08-04-16 stood out for favoring all the variables studied. The use of mineral and organomineral fertilizers was favorable to the initial growth of coffee seedlings in the field.