Management of Spodoptera litura (F.) and S. exigua (Hubner) in Onion Mass Trapping and Timing of Interventions in Farmers’ Fields
Penn State University
Philippine Rice Research Institute (Philippines); AVRDC
G.S. Arida, B.S. Punzal, A.A. Duca (Philippine Rice Research Institute),E.G. Rajotte (Pennsylvania State University) and N.S. Talekar (Asian Vegetable Research and Development Center)
This project focused on evaluating the effect of mass trapping of male S. Litura and S.exigua moths with sex pheromone trap catches and the effects on the yield of onion. The lack of an effective monitoring and surveillance tool for effective timing of interventions against cutworm and armyworm resulted in substantial amounts of unnecessary spray in onion and other vegetables. This contributes to misuse of insecticides in onions and other vegetables.
1. To evaluate the effect of mass trapping of male S. litura and S. exigua moths and timing of interventions based on sex pheromone trap catches on pest damage and yield in onion 2. To compare this strategy with farmers' pest management practices
The study demonstrated that frequency of insecticide sprays was reduced significantly when sex pheromone baited traps are utilized as a monitoring tool for effective timing of interventions (insecticide application) against S.litura in onion.