Avaliação de produtos para o controle de nematóide na cultura da soja

Abstract

This study aimed to evaluate the efficiency of products with biological and chemical active ingredient in control Meloidogyne javanica under greenhouse and in vitro home test. The design was completely randomized with 15 repetitions each product for greenhouse and fourth installments in vitro test. The products tested were: 1 product (no active ingredient) dose 0; Product 2 (Trichoderma harzianum) at a dose of 20g / 100kg seed; 3 product (Pasteuria penetrans) with dose of 150ml / 100kg seed; Product 4 (Trichoderma harzianum) at a dose of 20g / 100kg seed; 5 product (Purpureocillium liliacinum) at a dose of 20 l / ha; 6 product (Bacillus megaterium /Bacillus subitilis.) with dose of 60 ml / 100kg seed; product 7 (Trichoderma asperellum / Bacillus subtilis) at a dose of 1 g / kg seed; 8 product (Abamectin) with dose of 100ml / 100kg seed. It evaluated weight and root length, gall, egg mass, eggs, juveniles and reproduction factor. For root weight the product 4 (Trichoderma harzianum) obtained the highest average; to root length the product 7 (. Trichoderma asperellum / Bacillus subtilis) was highest average; the gall evaluation Products 3 (Pasteuria penetrans) and 8 (Abamectin) showed the lowest number of galls per root system; for egg masses the product 1 (no active ingredient) showed the greatest number; the result of juvenile products with active ingredient stood out except 2 (Trichoderma harzianum) that did not show control; the eggs assessment Products 1,6,7 and 8 were the least multiplied; as the reproduction factor, products with greater control of M. javanica were the products 3 (Pasteuria penetrans) and 8 (Abamectin). When evaluated in vitro at doses of 1 and 2%, all organic products and the chemical showed control of nematode galls. We conclude that both, biological and chemicals can be effective in controlling M. javanica. Since for biological tested the bacteria Pasteuria penetrans showed greater efficiency.