Toxidade de tratamentos alternativos e químicos in vitro sobre Tubixaba tuxaua e Meloidogyne incognita

Abstract

This study aimed to evaluate the toxic effect of aqueous extract of Crotalaria, turmeric, neem, fermented of sugarcane juice by yeasts, and chemicals terbufós, carbofuran and imidacloprid + thiodicarb on adults of Tubixaba tuxaua and Meloidogyne incognita. The tests were conducted at the Laboratory of Nematology of the Western Paraná State University - UNIOESTE, Campus Marechal Cândido Rondon in petri dishes for 24 hours. For each treatment were used petri dishes, which were deposited known populations of T. tuxaua and M. incognita in 20 mL of solution. The parameter assessed was mortality of nematodes. We considered those living nematodes that showed natural mobility and retained their original shape, and killed those immobile, deformed or who had unusual aspect. We conclude that the toxicity of extracts of neem, turmeric and crotalaria show high efficiency in the control of the two species of nematodes, with fermented by yeast conducting a reasonable control. Chemical treatments were more effective for M. incognita in relation to T. tuxaua.