CONTROLE DE Meloidogyne javanica EM JILOEIRO (Solanum gilo) COM RESÍDUO DO FRUTO DE PEQUI (Caryocar brasiliense)

Abstract

The root-knot nematode causes many losses in the jiloeiro (Solanum gilo) crop, and the chemical control with nematicide presents risks of environmental contamination. Therefore, the objective of this work was to evaluate the efficiency of the pequi (Caryocar brasiliense) fruit residue in the control of Meloidogyne javanica. The experimental design was organized in a greenhouse, in eight randomized blocks and six treatments. The doses of 0 (g), 2.5 (g), 5 (g), 10 (g), 20 (g) of pequi fruit residue were used. The variables analyzed 65 days after the inoculation of 5,000 M. javanica eggs were: plant height, mass of fresh matter of aerial part, fresh root matter mass, mass of dry matter of aerial part, gall index, number of eggs and reproduction fator (M. javanica). The Tukey test was used in the SISVAR statistical program with 5% probability in the evaluations. The product incorporated in the soil, regardless of the dose, did not influence the variables of the development of the plants. At the highest dose there was a significant reduction in gall number, number of eggs and reproduction factor in relation to the zero dose. Thus, the residue of the pequi fruit presented nematicidal action against M. javanica.