|Ruberson, John - UNIV OF GA|
Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: December 31, 2008
Publication Date: January 6, 2009
Citation: Olson, D.M., Ruberson J. 2009. Fate of southern green stink-bug eggs in Bt-cotton, round-up ready cotton, soybeans and peanuts. National Cotton Council Beltwide Cotton Conference, January 5-8, 2009, San Antonio, TX. Technical Abstract: There is a need to determine the life history of stink bugs relative to major crops in the area. To this end, we investigated Southern green stink bug egg mortality by placing sentinel egg masses in plots of soybean, Bt-cotton, Round up Ready (RR) cotton and peanut plants in the Southeast. Egg masses were photographed at placement and at 12h, 24h and 48h after placement to help evaluate relative predation and parasitism in the crops. Predation of eggs was high in peanuts (74%) and soybeans (65%), and similarly lower in Bt (26%) and RR cotton (21%). Most egg predation in cotton and peanuts was attributable to fire ants. Parasitism was low overall but higher in the cotton (8%) than the peanuts (0.17%) and soybeans (2%). Both predation and parasitism was higher at plot edges than the centers of all three crops. Future studies will continue to investigate relative egg mortality as well as preference, reproduction and longevity in the various crops used by these species.