ISHS Acta Horticulturae 422: International Conference on Integrated Fruit Production
NON-CHEMICAL CONTROL OF GRAPHOLITHA MOLESTA (BUCK) IN MICHIGAN PEACHES |
| Authors: | J. Johnson, J. Wise, J. Flore, M. Hubbard, E. Hanson, M. Whalon, G. Bird, A. Jones |
| Abstract:
Replicated small-orchard studies compared control of Oriental fruit moth, Grapholitha molesta (Buck) in Michigan peach orchards from 1990-1993. Three control regimes were compared: 1) Conventional control measures with pesticides applied on a 'calendar' or scheduled basis; 2) IPM strategy using pheromone traps and degree-day models to time controls; and 3) Lo-Input (non-chemical) control using mating disruption pheromones for behavioral control. In all four years of the study, all treatments provided excellent control of oriental fruit moth, meaning that the lo-input treatment performed as well as the conventional pesticide approach. Insecticide applications in the IPM and Lo-Input orchards were significantly reduced from the conventional control orchards. Secondary pests, such as Japanese Beetle, Popilla japonica, Rose Chafer, Macrodactylus subspinosus, and Plum Curculio, Conotrachelus nenuphar, became numerous in treatments with reduced pesticides, and required additional control applications. | |
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