TY - JOUR
T1 - Sensibilidad de cepas silvestres y mutantes de Trichoderma harzianum a fungicidas
AU - Herrera, Rodrigo
AU - Núñez, David
AU - Romero, Natalia
AU - Besoain, Ximena
AU - Pérez, Luz María
AU - Montealegre, Jaime
PY - 2012/12
Y1 - 2012/12
N2 - 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 Trichoderma strains were germinated in the presence of 1,700 mg L-1 of pencycuron. The wildtype 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.
AB - 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 Trichoderma strains were germinated in the presence of 1,700 mg L-1 of pencycuron. The wildtype 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.
KW - Biocontrol
KW - Biocontrol agents
KW - Control of tomato root diseases
KW - Fungicide tolerant Trichoderma
KW - Fungicides
KW - Integrated management
UR - http://www.scopus.com/inward/record.url?scp=84875994572&partnerID=8YFLogxK
U2 - 10.4067/S0718-16202012000300016
DO - 10.4067/S0718-16202012000300016
M3 - Article
AN - SCOPUS:84875994572
VL - 39
SP - 569
EP - 576
JO - Ciencia e Investigacion Agraria
JF - Ciencia e Investigacion Agraria
SN - 0304-5609
IS - 3
ER -