In studies conducted by Radcliffe, Ragsdale and others from the U of Minnesota, rates of Monitor and Admire below the recommended labeled rate failed to give satisfactory control. Cutting the rate to save on insecticide costs would compromise control. Fulfill gave good control by 6 days after application. 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, feeding ceases, but death takes several days. 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. The use rate is 2.75 fl oz per acre for an application. Only 5.50 fl oz may be applied per acre in a season.