Monday, December 10, 2007 - 9:53 AM
0514

Use of novaluron’s transovarial activity for plum curculio Conotrachelus nenuphar Herbst (Coleoptera: Curculionidae) population control

Ki Duk Kim, kimki2@msu.edu1, Soo-Hoon Samuel Kim, kimsamue@msu.edu2, John C. Wise, wisejohn@msu.edu2, Christine Vandervoort, vanderv2@msu.edu2, Ayhan Gokce, agokce@gop.edu.tr3, and Mark E. Whalon, whalon@msu.edu2. (1) Michigan State University, Entomology, B11 Center for Integrated Plant Systems, East Lansing, MI, (2) Michigan State University, Department of Entomology, B-11 Center for Intergrated Plant Systems, East Lansing, MI, (3) Gaziosmanpasa University, Plant Protection, Tasliciftlik Yerleskesi, Tokat, Turkey

In this study, we investigated efficacy of novaluronís transovarial activity for plum curculio (PC) population control. Before an actual field trial, laboratory bioassays were conducted to verify effective means of pesticide exposure (ingestion, contact, or both), if untreated female is still affected when paired with treated male, if female PCs with fully developed eggs are still affected. Both means of exposure were effective in reducing significant number of subsequent larval emergence, untreated female paired with treated male had reduced number of larval emergence comparable to treated females, and novaluron was still effective even for female PCs with fully developed the eggs. Field trial was conducted on apples and cherries at Michigan State University Trevor Nichols Research Station located at Fennville, Michigan. Apple and cherry terminals were collected for pesticide exposure at day 0, 7, 14, and 21 following the spray. Leaf and fruit exposure were investigated separately by leaving only desired exposure material on the collected terminals and removing the other. Both leaf and fruit exposures were effective in reducing significant number of subsequent larval emergence up to day 7 after the spray. Residue analysis and leaf/fruit growth rate were also analyzed to be compared with novaluron activity as progression of time.


Species 1: Coleoptera Curculionidae Conotrachelus nenuphar (plum curculio)