Effect of natural and chemical products on control of Pratylenchus spp. and Meloidogyne javanica in sugarcane

Abstract

The purpose of this study was to evaluate the effect of natural and chemical products on Pratylenchus spp. and Meloidogyne javanica populations in sugarcane (Saccharum sp.), variety RB835486. The experiment was carried out in comercial field of Goias state, Brasil. The experimental design was randomized blocks in a factorial scheme 5 x 2, in split plot, with five replications. The treatments evaluated were: control, abamectin 0.5 L ha^-1, abamectin 1.0 L ha^-1, neem oil 2 L ha^-1, aldicarb 150 G 12 kg ha^-1, all of them with and without filter cake (30 t ha^-1). Nematode populations were evaluated at two, four, six and eight months after planting. Biometrics and technological traits were also evaluated. Aldicarb was efficient on the control of Pratylenchus spp. and M. javanica showing effect until four months after application in the planting furrow. However, when applied in association with filter cake its efficiency was reduced. Use of abamectin and neem oil did not show any nematicide effect. The filter cake did not show consistent effect as nematicide, but increased the number of shootings.