Delegate (spinetoram)
(IRAC Group 5 Insecticide). Delegate is a member of the spinosyn class of insecticides derived from fermentation of Saccharopolyspora spinosa but with chemical modifications. Spinetoram causes excitation of the insect nervous system by altering the function of nicotinic and GABA-related ion channels. Delegate exhibits good translaminar activity but not systemic activity. Delegate is registered for use on pome fruit, stone fruit, bushberries, caneberris, and grapes. For pome and stone fruit the in-season recommended rate is from 4.5 oz to 7.0 oz per acre. Delegate provides excellent control of leafrollers, leafminers, codling moth, Oriental fruit moth, thrips, pear psylla, and suppression of apple maggot and plum curculio. As a larvicide, the compound needs to be ingested by the insect for optimal pest control. Due to the same mode of action as Spin- Tor, no more than three consecturive applications of those two compounds are recommended. No more than four applications are allowed per season. Delegate has a 7-day PHI on apples, cherries, plums and prunes, a 14-day PHI on peaches, and a 1- day PHI on nectarines.
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