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  • International Journal of Agriculture and Natural Resources
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Sensitivity of wild-type and mutant Trichoderma harzianum strains to fungicides

Author
Herrera, Rodrigo

Núñez, David

Romero, Natalia

Besoain, Ximena

Pérez, Luz María

Montealegre, Jaime

Full text
https://www.rcia.uc.cl/index.php/ijanr/article/view/49
Abstract
R. Herrera, D. Nuñez, N. Romero, X. Besoain, L. M. Pérez, and J. Montealegre. 2012. Sensitivity of wild-type and mutantTrichoderma harzianum strains to fungicides. Cien. Inv. Agr. 39(3): 569-576. The germination of conidia in wild-type (Th11, Th12 and Th650) and mutant (Th11A80.1, Th12A10.1 and Th650-NG7) strains of Trichoderma harzianum that were exposed to different commercial fungicides was studied. All wild-type and mutant Trichodermastrains were germinated in the presence of 1,700 mg L-1 of pencycuron. The wild-type strains Th12 and Th650 and the corresponding mutant strains Th12A10.1 and Th650-NG7 were sensitive to all concentrations of iprodione and metalaxil + mancozeb. The EC50 (Median Effective Concentration) values for the different fungicides were between 10-1 and 10-4 less than the concentrations recommended for field applications; one exception was Phyto‑fos on Th650‑NG7, where this ratio was 0.72. These results establish whether some of these fungicides can be used in combination with the biocontrol agents evaluated.
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Discipline
Artes, Arquitectura y UrbanismoCiencias Agrarias, Forestales y VeterinariasCiencias Exactas y NaturalesCiencias SocialesDerechoEconomía y AdministraciónFilosofía y HumanidadesIngenieríaMedicinaMultidisciplinarias
Institutions
Universidad de ChileUniversidad Católica de ChileUniversidad de Santiago de ChileUniversidad de ConcepciónUniversidad Austral de ChileUniversidad Católica de ValparaísoUniversidad del Bio BioUniversidad de ValparaísoUniversidad Católica del Nortemore

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