Efficacy of benomyl and folpet on Fusarium oxysporum a strawberry pathogen
DOI:
https://doi.org/10.29312/remexca.v14i3.3253Keywords:
Fragaria × ananassa Duchesne ex Rozier, Costa Rica, wiltAbstract
In Costa Rica, the strawberry crop is important due to the generation of jobs in rural areas; nevertheless, it has been affected by fungal pathogens that have caused reductions in the area planted. The fungus Fusarium oxysporum is associated with wilt and collapse of plants, which is why the in vitro biological efficacy of the fungicides benomyl and folpet was tested, in three concentrations, to determine if it is possible to use them as a combat alternative. The research was carried out in the Phytopathology Laboratory of the Fabio Baudrit Moreno Agricultural Experimental Station, Alajuela, Costa Rica in 2021. By means of the poisoned food technique, the growth diameters of the mycelium of three strains of the fungus, exposed in quintuplicate to the commercial dose, the tenth and hundredth part of this, as well as to a treatment without fungicide, were compared. The percentage of growth inhibition caused by each dose was then calculated. Benomyl showed 100% inhibition at all doses for the three strains, while folpet reached a maximum of 60% in the commercial dose. According to the results, F. oxysporum strains isolated from strawberry plants with wilt symptoms respond differentially to benomyl and folpet.
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