Evaluation of a nematicide product on parasitic nematodes of the plantain Dominico Harton (Musa AAB)

摘要

To establish the effectiveness of a molecule with nematicida action against parasitic nematode of the plantain, experiments were conducted at the Phytopathology laboratory of the University of Caldas. The effect of concentrations of 0.0, 0.5, 1.0, 2.0, 4.0, 6.0, 8.0, 16.0, 32.0, 64.0, 96.0 y 240.0 ppm of MCW-2 was evaluated on the mortality of populations of nematodes of the genera Radopholus, Pratylenchus, Meloidogyne y Helicotylenchus during 24, 48 and 72 h of exposition. As the relative control Carbofuran was used. The absolute control was the treatment with water. A randomized experimental design was used in a factorial arrangement of two products, 12 concentrations and three times of exposure. The levels of mortality at concentrations above 16 ppm were higher with MCW-2 than with Carbofuran and vice versa; that in all of the concentrations mortality increased with the time of exposition; that Meloidogyne was the genus most sensitive to MCW-2 while Pratylenchus so was to Carbofuran and that the 50% lethal concentration for MCW-2 for the four genera of nematodes was below 115 ppm and to Carbofuran was between 415 and 715 ppm. It was concluded that MCW-2 constitutes a good option to the control of nematodes in plantain, although it necessary to evaluate it on plants growing in plastic bags.