Interpretation of results. The lowest rates of Monitor and Admire, both below the recommended labeled rate, failed to give satisfactory control. Cutting the rate to save on insecticide costs would compromise control. Fulfill has a unique mode of action that needs some explanation. This product paralyzes the muscles associated with the aphids sucking mouthparts.
Death is essentially by starvation.
Soon after applying Fulfill reproduction ceases, but death takes several days. Some insecticides such as Asana and Penncap-M cause aphid populations to increase dramatically. Most of the older compounds often used to control potato leafhopper and Colorado potato beetle will flare green peach aphids. This is especially evident if the products are used more than once. At the present time insecticide options for aphid control are limited.