Monday, December 10, 2007 - 8:29 AM

Impact of brown stink bug (Euschistus servus) feeding in corn during early ear development

Eric Blinka,, John Van Duyn,, and JR. Bradley, North Carolina State University, Entomology, Box 7630 Ligon St. Ext, Raleigh, NC

The impact of brown stink bug (Euschistus servus) feeding on early corn ear development was studied in northeastern North Carolina in 2007. Two corn fields were utilized to place stink bugs in field cages around developing ears at three different treatment levels during three different corn plant development stages. Treatment levels consisted of 0, 1, and 2 bugs per cage, while the plant development stages consisted of V15, V18, and R1. Stink bugs remained in cages for two weeks with replacement of dead bugs after one week. After 14 days, stink bugs were removed from the cages and the number of stylet marks were counted. Cages remained on the plants to minimize feeding from outside stink bugs. Ears were allowed to mature and were harvested and dried to 12 13% moisture. Ear weights and lengths were recorded. Ears were then shelled and seed weights recorded. Data demonstrates that higher numbers of stink bug punctures occurred during the V15 stage, followed by V18 and finally R1.

Species 1: Hemiptera Pentatomidae Euschistus servus (brown stink bug)