The effectiveness of insecticide applications for control of Frankliniella occidentalis (Pergande) was improved by manipulating greenhouse microclimate conditions. Trials were conducted under controlled environment chamber and greenhouse conditions. Temperature and vapor pressure deficit (VPD) had significant effects on the flight activity of thrips in Plexiglas boxes in controlled environment chambers. On the plant surface in the greenhouse; however, temperature played the more dominant role. Raising the greenhouse air temperature from 21–23 to 26–28°C resulted in increased flight activity and improved mortality from insecticide (endosulfan) application by 23–25%. Based on the flight activity under laboratory conditions, a quadratic model was developed. This model can be used to predict the flight activity of thrips under combinations of temperature and VPD that can occur during greenhouse crop production.
Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.