Effect of agro-chemicals on in vitro growth of the entomopathogenic fungi Metarhizium anisopliae (Metschnikoff) sorokin and Paecilomyces fumosoroseus (Wize) Brown and Smith
Por:
Ayala-Zermeño M.A., Navarro-Barranco H., Mier T., Toriello C.
Publicada:
1 ene 1999
Resumen:
Seven adherents/surfactants (Adhefix, Adhefix 12, Citowett Plus, Inex-A, Kaytar, Kinetic, Penetrator Plus), two foliar fertilizers (Arco iris, Musol), seven insecticides (Diazinon, Malathion, Methamidophos, Trichlorfon, Carbaryl, Endosulfan, Permethrin,) and two fungicides (Benomyl, Captan) were tested in vitro on Metarhizium anisopliae and Paecilomyces fumosoroseus growth. Assessments were made on solid medium with two concentrations of each agrochemical. The best compatibility with adherents/surfactants (A/S) was exhibited by Penetrator and Kinetic on M. anisopliae; and Adhefix 12, Kinetic and Penetrator on P. fumosoroseus. In general, fertilizers did not affect growth of fungi tested. Insecticides showed a significant deleterious effect (P<0.05) on fungal growth. The least growth inhibition percent was exhibited by both concentrations of trichlorfon on M. anisopliae; and 0.5% methamidophos, without significant inhibition, and both concentrations of endosulfan on P. fumosoroseus. Malathion fully inhibited growth of both fungi. The fungicides were particularly toxic on fungal growth of fungi tested. In field applications, care should be taken to test compatibilities when using A/S with entomopathogenic fungi, as well as to choose the best fungal compatible insecticide when required.
Filiaciones:
Ayala-Zermeño M.A.:
Depto. Microbiologia y Parasitologia, Facultad de Medicina, Ciudad Universitaria, 04510 Mexico D.F., Mexico
Navarro-Barranco H.:
Depto. Microbiologia y Parasitologia, Facultad de Medicina, Ciudad Universitaria, 04510 Mexico D.F., Mexico
Mier T.:
Departamento El Hombre y Su Ambiente, Division Cie. Biologicas de la Salud, Univ. Autonoma Metropolitana-X., 04960, Mexico D.F., Mexico
Toriello C.:
Depto. Microbiologia y Parasitologia, Facultad de Medicina, Ciudad Universitaria, 04510 Mexico D.F., Mexico
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