INTERAÇÃO E EFICÁCIA DE PRODUTOS BIOLÓGICOS E QUÍMICOS NO MANEJO DE Meloidogyne javanica EM CULTIVARES DE TOMATE

Abstract

The tomato is the most important olive grove in Brazil, in 2016 the production was 3,737,925 tons, however this crop suffers from the attack of Meloidogyne javanica. The objective was to evaluate the efficiency and interaction of chemical and biological control in the management of M. javanica, in tomato under protected environment. Two experiments were carried out in the first greenhouse experiment, under DBC in 2x4 factorial, with two cultivars of tomato, Santa Clara and Cardyna, and 4 treatments (T1), T3, Purpureocillium lilacinum + Trichoderma harzianum, (T4) cadusafos + P. lilacinum + T. harzianum, with 8 replicates. After 60 days, evaluated: fresh root mass, egg mass index, gall index and reproduction factor, were submitted to the Fischer LSD test at 5% of significance. The second one analyzed the synergism between the nematicides, developed in ICD with factorial 2x5, two bionophores (T. harzianum and P. lilacinum) and five concentrations of cadusaflós (0; 0,1; 1; 10; 100 ppm), with 4 repetitions. Samples with 1x109 CFU of the bionematicides were superimposed on BDA medium in the different samples. It measured colon diameter at 24, 48, and 72 hours, and constructed confidence intervals at 95% reliability. The simultaneous use of 1 cadusafos, P. lilacinum and T. harzianum provides better control over M. javanica. The action between chemical nematicide and bionematicides is positive. The combination of biological, chemical and tolerant cultivars is convenient in the management of M. javanica as an additive effect.