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Colletotrichum Resistance to QoI Fungicides

Anthracnose fruit rot disease, caused by fungal Colletotrichum species, is one of the most significant disease problems of commercial strawberry production in Georgia and the Southeast.  Resistance to site specific fungicides could result in control failures if proper resistance management strategies are not used.
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Colletotrichum resistance to QoI fungicides in Georgia

Please see the link below for information concerning the current status of QoI fungicide resistance in Georgia. This is important information for your 2020 disease control program. Colletotrichum resistance to QoI fungicides such as Abound and Pristine are prevalent throughout Georgia
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Anthracnose Outbreak

Anthracnose is prevalent in strawberry plantings at this time.  As mentioned in the last post, I am concerned about resistance.  If you identify anthracnose in your planting, have it tested for resistance to the QoI (strobilurin) chemistry class (Abound, etc.).  While you wait for test results, apply Switch + Captan…
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Anthracnose Resistance Development

We are observing significant anthracnose epidemics in Georgia strawberries at this time. Unfortunately, we have determined that the anthracnose fungus has developed resistance to the strobilurin (quinone outside inhibitor; FRAC 11) class of fungicides (e.g. Abound, Pristine). This is resulting in extensive disease, as spraying these materials provides no or…
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Frost/Freeze Protection

I know the groundhog said that we will have an early spring but we still have frost and freezes in a normal Georgia spring. Go ahead and get the row covers ready because it looks like we may have a roller coaster ride ahead of us.  In middle Georgia we…
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Testing for Botrytis Resistance in Georgia Strawberries

We are already having Botrytis showing up on strawberry blooms.  It is therefore a good time to test Botrytis for resistance to the various fungicide classes that are active against this pathogen group.  Clemson University (Guido Schnabel) will once more test for resistance to Botrytis, but this will be the…
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