Evaluation of Western Bean Cutworm Pheromone Trapping Techniques (Lepidoptera: Noctuidae) in a Corn and Soybean Agroecosystem

• Published in: Journal of economic entomology Vol. 101; no. 2; pp. 404 - 408
• Main Authors: Dorhout, D.L, Rice, M.E
• Format: Journal Article
• Language: English
• Published: England 01.04.2008
• Subjects: Agriculture - methods; agroecosystems; Animals; corn; cutworms; Ecosystem; equipment design; equipment performance; Glycine max; Glycine max - parasitology; Insect Control - instrumentation; Insect Control - methods; Moths - physiology; Noctuidae; pest monitoring; pheromone traps; soybeans; Striacosta albicosta; Time Factors; trap height; trapping; Zea mays; Zea mays - parasitology; Iowa
• ISSN: 0022-0493; 1938-291X
• DOI: 10.1603/0022-0493%282008%29101%5B404%3AAEOWBC%5D2.0.CO%3B2

Pheromone traps can be used to monitor for adult western bean cutworms, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), and for the timing of field scouting. Understanding the effect that different trapping techniques have on adult captures could help corn (Zea mays L.) producers make better pest management decisions. Several approaches to trapping adults were evaluated in 2005 and 2006 by using two different pheromone traps (sticky wing and jug traps) in two different environments (corn or corn/soybean [Glycine max (L.) Merr.] at three different heights (0.6, 1.2, and 1.8 m). There was no significant difference in the trap catches by trap type in either 2005 or 2006. There were significantly more adults captured in traps placed between two cornfields than traps placed between corn/soybean fields during both years. Trap height also was significant, with the traps at 1.2 and 1.8 m catching more moths than traps at 0.6 m during both years. These results show that trapping techniques do affect trap catches and that either trap type placed between two cornfields at either 1.2 or 1.8 m above the ground will maximize trap catches.