Baited yellow pyramid traps with and without baits were evaluated for attractiveness to rice stink bugs, Oebalus pugnax (F.) and several monitoring methods were used to determine the best sweep net sampling period of the day and when rice stink bugs disperse from host grass areas to adjacent rice fields in Arkansas. During rice heading in 2001, rice stink bug counts were very low (< 0.25 bugs/pyramid trap) and did not differ among traps baited with virgin adult rice stink bugs or milk stage rice panicles or barnyardgrass panicles or a rubber septum charged with 50ul of methyl (2E, 4Z) decadienoate, Euschistus spp. aggregation pheromone. Significantly more adult stink bugs were swept by a sweep net at 0900 and 1900 hrs CDT than at 1330 CDT. In 2002, unbaited yellow pyramid traps were monitored weekly. Traps captured more than 13 rice stink bugs/trap between 5 June and 12 July (before 75% rice heading). Significantly higher numbers of rice stink bugs (> 10 bugs/sample) were visually counted on grass hosts (> 10 bugs/grass sample) or swept from grassy hosts (> 3 bugs/10 sweeps) from 28 June to 12 July than from 12 July to 22 August (rice heading) (< 1 bugs/sample). Trap counts also dropped to < 1 bug/trap during rice heading. From end of harvest (6 September) until 26 September, trap catch increased to above 15 bugs/trap then dropped to < 1 bug/trap by 3 October and to zero by 1 November.
Species 1: Heteroptera Pentatomidae Oebalus pugnax (rice stink bug)
Keywords: pest management, sampling
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