CONTROLE BIOLÓGICO E GENÉTICO DE Meloidogyne exigua EM DUAS CULTIVARES DE CAFÉ

Abstract

Meloidogyne exigua the most founding species in coffee plantations in Cerrado, both in areas from the production longer antiques the newly formatted areas. There are nematicides registered in MAPA to control this type and some cultivars are resistance, yet the losses moved even is relevant. The genetic method of analysis of biological agents and genetic control of Meloidogyne exigua in coffee. The experiment was carried out in a greenhouse at the Goiano Federal Institute, Campus Urutaí, in a completely randomized design. The new strategies were 2x4 replicate factories (two cultivars, 4 nematicides, and 2 additional reports, which were added by two genotypes: IAPAR Mundo Novo 376-4 and IPR-100 and three biological nematicides Bacillus methylotrophicus, Bacillus subitilis and Trichoderma asperellum, 6 and 6, with six replicates each, and three samples and eight samples containing 6 replicates each. Number of leaf pairs and chlorophyll content levels during the 150 days after inoculation (DAI), the final nematode population was determined to calculate the factor The results were compared with the results of IPR-100, the result was low (<1) compared to the Mundo Novo 376-4 IAPAR genotype, showing the efficient genetic control, and in the controls for the purpose of verifying, decorating with the RF, varying from 2.64 to 5.68 Thus, the biological control agents demonstrated success in the treatments when compared to the control. The number of plants, stem diameter, number of leaf pairs and chlorophyll content were reduced, with study times evaluated. It was concluded that the biological control agents were efficient, that is, they contributed to the better development of the plants within the two genotypes. The control of M. exigua the nematicide mixture was efficient, but it is clear that the genetic control will be more efficient.