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Using Bees to Disseminate Trichoderma to Strawberries for the Control of Botrytis Fruit Rot 1997

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Project Leader: Joe Kovach, IPM Program, Cornell University, Geneva, NY.

Introduction: Over the past few years several studies have shown that bees can disseminate beneficial fungi, bacteria, and viruses to strawberries, pome fruits, and clover. Botrytis cinerea causes the familiar gray molds that are evident on a variety of fruits, including grapes, strawberries, and raspberries. Infection by B. cinerea on strawberry occurs in the flower and remains quiescent until the fruits mature. It then develops abundantly, causing fruit rot. Current IPM recommendations call for one to two fungicide applications (usually Ronilan) at bloom, depending on variety, bloom length, and weather conditions, for control of this pest.

Trichoderma harzianum 1295-22 is a commercially produced biocontrol agent that controls several plant pathogenic fungi including Botrytis. Mode of action can be