Crescimento inicial e nodulação natural do amendoinzeiro cultivado com esterco bovino

Abstract

Arachis hypogeia L. (Arachis hypogeia L.) is an economically important oleaginous species that is cultivated worldwide, however, there are few studies about organic fertilization using bovine manure in the development of this crop. The objective was to evaluate the use of bovine manure and its influence of natural nodulation and the initial growth of the peanut. The treatments consisted of five doses of bovine manure (0, 10, 20, 30 and 40 t ha-1), with 20 replicates, totaling 100 experimental plots arranged in a completely randomized design. The samples of YELLOW LATOSOL Distrocoeso used for cultivation were collected in the superficial layer (0-20 cm) on the campus of the Federal University of Recôncavo da Bahia and cattle manure collected in the Rural Area of the Municipality of São Felix-BA. In the initial (sowing) and final phases of the emergence and initial growth evaluations of the peanut tree, the following characteristics were evaluated: leaf number, shoot height, main stem diameter, chlorophyll A, B and total, root length, root dry matter mass, number of nodules and mass of dry matter nodules. The data were submitted to analysis of variance and the means were compared by the polynomial regression test for each studied variable, as a function of organic fertilization rates. The addition of bovine manure inhibits natural nodulation and delays the emergence of peanut. The use of bovine manure in the amount of 30 t ha-1 positively influences the initial growth of the peanut.