What is all over the underside of these strawberry leaflets?
These leaflets are infested with aphids. Finding aphids on strawberry plants is common this time of year, especially on plants that have been covered to protect them from the cold. Aphids rarely warrant an insecticide treatment. Even at the level shown in the picture, beneficial insects, such as lady beetles and parasitic wasps, will quickly clean up aphid colonies. The worst thing to do is apply a broad-spectrum insecticide, such as bifenthrin. Doing so would kill beneficial insects, allowing the aphids to continue feeding and developing. In addition, spider mite populations are likely to show up and thrive following broad-spectrum insecticide applications. Instead, scout regularly and watch the beneficial insects do the work for you.
This week’s question is from Justin Ballew, Extension Fruit and Vegetable Research Associate.
The South Carolina Grower 