By Blake Jackson
An unexpected development for Pennsylvania strawberry growers is the early detection of Spotted Wing Drosophila (SWD) damage in southeastern regions. SWD infestation typically targets late-season varieties, but this year, June-bearing strawberries are also at risk.
Proactive monitoring is crucial. Growers should meticulously inspect their strawberries for small, soft areas that deviate from the fruit's normal firmness.
The presence of larvae within these soft spots may necessitate the application of insecticides. It is important to note that alternative factors like fungal diseases or sunscald can mimic SWD damage by causing fruit softening. These softened areas can then attract egg-laying from other fly species, whose larvae may be visually indistinguishable from SWD larvae.
While black raspberries are generally considered a less favorable host for SWD and often escape damage, heightened vigilance is recommended this season.
Growers should monitor for signs of SWD infestation, such as soft and sunken drupelets (individual fruit within the cluster) and the presence of larvae. Additionally, close monitoring of early-ripening red raspberry varieties remains essential.
By implementing these precautionary measures, Pennsylvania strawberry growers can minimize potential losses due to SWD activity.
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Categories: Pennsylvania, Crops, Fruits and Vegetables