Evaluation of Selected Sampling Methods for Panicle-Infesting Insect Pests of Sorghum

Autor:	George L. Teetes, M. E. Merchant
Rok vydání:	1992
Předmět:	Ecology biology General Medicine biology.organism_classification Sorghum Agronomy Cecidomyiidae Insect Science Midge Oebalus pugnax Helicoverpa zea PEST analysis Nymph Panicle
Zdroj:	Journal of Economic Entomology. 85:2418-2424
ISSN:	1938-291X 0022-0493
Popis:	Field studies were conducted to evaluate methods for estimating field abundance of corn earworm, Helicoverpa zea (Boddie), sorghum webworm, Celama sorghiella (Riley), rice stink bug, Oebalus pugnax (F.), and sorghum midge, Contarinia sorghicola (Coquillett), infesting grain sorghum. A “beat-bucket” method for separating panicleinfesting lepidopteran and hemipteran pests from the panicle captured 100% of rice stink bug adults, 95-100% of rice stink bug nymphs, 78-98% of corn earworm larvae, and 77% of sorghum webworm larvae. In situ visual estimates by experienced samplers of sorghum midge densities on panicles were highly correlated with estimates provided by wholepanicle samples ( r 2 = 0.92) and =89% of the insects were detected. Both the in situ and whole-panicle methods appeared suitable for field scouting. A sticky trap for sorghum midge was described and evaluated. Daily average sticky trap catches were significantly correlated with the average number of sorghum midge per panicle as estimated by wholepanicle samples ( r 2 = 0.85).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9e91865f420b7c520f7310705faa2938 https://doi.org/10.1093/jee/85.6.2418 Zobrazit plný text záznamu