ADUBAÇÕES ORGÂNICA E MINERAL SOBRE O CRESCIMENTO DO GERGELIM BRS SEDA EM SOLOS DO VALE DO CANINDÉ, PI

Abstract

Fertilization of sesame is one of the most discussed and controversial issues having positive results for certain locations and cultivars, and negative in other situations. The study aimed to evaluate the organic and mineral fertilizations on the BRS Seda sesame growth in Canindé valley soils, Piauí State, Brazil. The experiment was conducted in a greenhouse. The experimental design was completely randomized in factorial scheme 2 x 4, with three replications, being the factors: two types of soil (S1- Lowland Soil; S2-Slope Solil) and four fertilization treatments (A1- control; A2- organic fertilization with bovine manure; A3- organic fertilization with goat manure; and A4-25-80-20 mineral fertilization), totaling eight treatments and 24 experimental units. At 56 days after emergence were measured, in 4 plants, height, stem diameter, leaf area and weighted aerial part dry biomass. It was concluded that the studied factors influenced plant height, stem diameter and leaf area, however, they not influenced aerial part dry biomass of plants; BRS Seda sesame growth was higher in the soil of slope when fertilized with goat manure and, in the lowland soil, when fertilized with mineral fertilizers.