Honeylocust, Spring Cankerworm Control, 1978

Spring cankerworm control was evaluated with five insecticides between May 10 and June 6, 1978. Sunburst honeylocust trees 10-12 feet high were utilized in a randomized block design and replicated three times. Only alternate trees were treated to avoid spray drift. All treatments, except Medicaps and MetaSyston-R were foliar treatments made with a Spartan sprayer operating at 125 psi. Medicaps were implanted in the basal portion of the tree trunk at 4 inch intervals. MetaSystox R as a soil drench was applied in a ring cultivated in the drip area of the tree. The soil was then replaced and a gallon of water added to seal the insecticide in the soil. On June 6, 1978 a beating cloth was placed beneath the tree and the numbers of spring cankerworm dislodged were counted. There was no evidence of phytotoxicity.