evaluation of the antagonistic activity of native strains of spp. against spp.

Five samples of agricultural soil and five samples of (P. Mill., 1768) plants with symptoms of wilt and root necrosis were collected in five localities of the state of Tamaulipas, México. The aims of this study were the morphological identification, molecular identification and evaluation of the antagonistic activity of spp. on spp. Four strains of one strain of richoderma and five strains of were identified by morphological and molecular methods. The evaluation of the antagonistic activity of isolate (TP) showed the highest inhibition in spp. (78.80%). The evaluation of the antagonistic activity of spp. extracts in spp. did not show significant differences between treatments ( ≤ 0.05), with growth percentages that oscillated between 81.08 and 94.38%. The native isolate of (TP) showed significant competitive capability against the mycelial growth of species are promising agents of biological control in the central area of the State Tamaulipas, Mexico.