Augmentation of the assassin bug Pristhesancus plagipennis (Walker) (Hemiptera: Reduviidae) as a biological control agent for Helicoverpa spp. in cotton

Autor:	Paul R Grundy, Derek Maelzer
Rok vydání:	2002
Předmět:	biology fungi Biological pest control Assassin bug Pentatomidae biology.organism_classification Hemiptera Reduviidae Agronomy Heliothis Insect Science Botany Nymph Agronomy and Crop Science Helicoverpa Ecology Evolution Behavior and Systematics
Zdroj:	Australian Journal of Entomology. 41:192-196
ISSN:	1440-6055 1326-6756
Popis:	Third-instar nymphs of the Australian assassin bug, Pristhesancus plagipennis (Walker), were released into cotton plots at two release densities and two crop growth stages to test their biological control potential. Release rates of 2 and 5 nymphs per metre row resulted in field populations of 0.51 and 1.38 nymphs per metre row, respectively, indicating that over 70% of nymphs died or emigrated within two weeks of release. Effective release rates of 1.38 nymphs per metre row reduced the number of Helicoverpa spp. larvae in the plots for a 7-week period. Crop yields were significantly greater in the plots to which P. plagipennis nymphs were released, with the effective release rate of 1.38 nymphs per metre row providing equivalent yields as insecticide treated plots. The data suggest that P. plagipennis has the capacity to reduce Helicoverpa spp. larvae densities in cotton crops when augmented through inundative release.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1dc3689a2298cd2214274177c2ee22bc https://doi.org/10.1046/j.1440-6055.2002.00287.x Zobrazit plný text záznamu Plný text ve formátu PDF