Adubação com cama de aviário no crescimento inicial de Arachis hypogaea L.

Abstract

The use of organic fertilizers has become a useful practice for farmers, contributing to the improvement of soil fertility and substrates for seedling cultivation. In this context, the objective of this work was to evaluate the effect of the poultry litter on the initial growth of the peanut (Arachis hypogaea L.) culture. The experiment was conducted in a greenhouse at the Federal University of Recôncavo da Bahia, Center for Environmental and Biological Agrarian Sciences, in the municipality of Cruz das Almas, Bahia. The treatments with organic fertilization consisted of a control without fertilization, a treatment with fertilization of phosphorus and potassium and treatments submitted to doses of poultry litter added to samples of cohesive yellow Latosol corresponding to the field application of: 0; 20; 40; 60 and 80 t ha-1. The experimental design was completely randomized, with six treatments and 20 replications, totaling 120 experimental plots. Five seeds were sown by plastic bags and seed emergence evaluations were performed weekly to determine the percentage of emergence (% E) and the rate of emergence (IVE). After 28 days of sowing, dry aerial matter, shoot height, stem diameter, chlorophyll a, b and total were evaluated, in addition to the occurrence of natural nodulation. The obtained data were submitted to analysis of variance and polynomial regression for each variable studied, according to the doses of organic fertilization, using the statistical program SISVAR. Arachis hypogaea L. seeds do not emerge when fertilized with poultry litter. There was no response of the initial growth of Arachis hypogaea L. to chemical fertilization at 28 days after sowing.