Whiteflies infest fall cucurbits. Image from AgNet
UGA Cooperative Extension reports that:
Insecticide rotation when managing whiteflies remains key to long-term success in the Southeast. It has to be if growers want to avoid insecticide resistance developing.
Whiteflies infest fall cucurbits including watermelon and zucchini in additon to other crops. They overwinter on cool season crops. Whiteflies can also transmit cucurbit leaf crumple virus and cucurbit yellow stunting disorder virus. According to UGA crop loss estimates for fall 2017, these viruses caused between 30% and 50% of crop loss in squash and cucumbers and nearly 80% of crop loss in snap beans.
