A survey of thrips populations on seedling cotton in Louisiana
Document Type
Conference Proceeding
Publication Date
12-1-1999
Abstract
Several species of thrips are considered pests on seedling cotton. These include flower thrips, Frankliniella tritici (Fitch); tobacco thrips, Frankliniella fusca (Hinds); western flower thrips, Frankliniella occidentalis (Pergande); onion thrips, Thrips tabaci (Lindeman); and soybean thrips, Neohydatothrips variabilis (Beach). Previous surveys of thrips on cotton have indicated that tobacco thrips are the most abundant thrips species infesting cotton seedlings in Louisiana. Although western flower thrips are considered seedling pests of cotton in California, Georgia, Mississippi, New Mexico, Oklahoma, and South Carolina, this species has not been reported on cotton seedlings in the Louisiana surveys. Thrips adults were collected from cotton seedlings at the Northeast Research Station, St. Joseph, LA; Macon Ridge Station, Winnsboro, LA; Red River Research Station, Bossier City, LA; and the Dean Lee Research Station, Alexandria, LA in 1996. Collection areas consisted of 8-12 rows x 200 ft. cotton plots. Plants were sampled at 7 days after emergence (DAE) and continued until 42 DAE at 7-day intervals. Each sample consisted of forty plants that were processed with whole plant washing procedures. Thrips adults also were collected from an at-planting soil insecticide trial at the Macon Ridge Station in 1996. Two seed treatments, Orthene 80S (6.4 oz. AI/cwt of seed) and Gaucho (4.0 oz. AI/cwt of seed); two at-planting in-furrow spray treatments, Orthene 90S (0.9 lb AI/acre) and Admire 2F (0.2 lb AI/acre); one in-furrow granular treatment, Temik 15G (0.5 lb AI/acre), and an untreated control were surveyed for thrips infestations. Randomly selected plants (five per plot) were collected 7 DAE until 27 DAE at 4-day intervals. These samples were also processed with whole plant washing procedures. Thrips adults from each treatment were pooled across replicates to produce a composite sample for each date.
Publication Source (Journal or Book title)
Proceedings of the 1999 Beltwide Cotton Conference, January 1999, Orlando, Florida, USA
First Page
979
Last Page
980
Recommended Citation
Cook, D., Burris, E., & Leonard, B. (1999). A survey of thrips populations on seedling cotton in Louisiana. Proceedings of the 1999 Beltwide Cotton Conference, January 1999, Orlando, Florida, USA, 979-980. Retrieved from https://repository.lsu.edu/entomology_pubs/1018