Effect of Trichoderma harzianum in Combination with Fungicides in Controlling Gray Mould Disease (Botrytis cinerea) of Strawberry

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DOI: 10.4236/ajps.2017.84045    2,529 Downloads   5,843 Views  Citations

ABSTRACT

The effects of biofungicide formula containing the biocontrol agent Trichoderma harzianum (Jn14) as wettable powder in combination with the fungicides pyrimethanil and a mixture of cyprodinil and flydioxonil on Botrytis cinerea of strawberry in vitro, in vivo and in greenhouse were studied. The pathogen B. cinerea was more affected in vitro by low concentrations of the fungicides tested above 0.4 μg·ml-1 than the bioagent T. harzianum (Jn14). The later was almost insensitive to pyrimethanil. In the same direction, gray mould disease severity on strawberry detached leaves and whole plants was reduced up to 89% by the tested fungicides, compared to the control, while the application of T. harzianum (Jn14) alone reduced disease severity up to 45% on strawberry detached leaves, compared to the control. In the integrated control approach, the combination of T. harzianum (Jn14) with higher concentrations of the tested fungicides (ED50) completely inhibited strawberry gray mould disease severity in pots and the greenhouse.

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Barakat, R. and Al-Masri, M. (2017) Effect of Trichoderma harzianum in Combination with Fungicides in Controlling Gray Mould Disease (Botrytis cinerea) of Strawberry. American Journal of Plant Sciences, 8, 651-665. doi: 10.4236/ajps.2017.84045.
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