Dynamics and seasonal abundance of stink bugs (Heteroptera: Pentatomidae) in a cotton-soybean ecosystem.

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摘要：

Two varieties (early-maturing group V and late-maturing group VII) and two varieties (conventional and transgenic (Bt) were grown in adjacent replicated large field plots (approximately 0.1 ha each) at two locations for 3 yr. The dynamics and relative abundance of phytophagous within these two crops were observed. The most abundant pentatomid species in both crops for all 3 yr were (L.), (Say), and Euschistus servus (Say). Several other species also were commonly collected. This is the first record of Mormidea lugens (F.) on and E. quadrator Rolston, E. obscurus (Palisot), Holcostethus limbolarius (Stl), and Oebalus pugnax (F.) on . began arriving in when plant growth stages ranged from pod formation to full seed . Peak numbers of these were found in from the time of full-size seeds in the pods until early maturity. The bugs were first attracted to the earlier maturing cultivar (group V), where they remained until began to mature (R7). The pentatomids then moved to the later-maturing cultivar (group VII) as it reached full pod to full seed. began arriving in from the time of the earliest flowers until after the first formed. Peak numbers in occurred during the time when all stages of developing were present. numbers were much greater in than in over all three seasons. This preference for over indicates the potential use of as a trap crop for attracting away from . Additionally, the coordinated use of early- and late-maturing cultivars as a trap crop could minimize the area requiring , as well as the number of applications to .

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关键词：

Acrosternum hilare Euschistus servus Nezara viridula trap cropping

DOI：

10.1603/0022-0493-93.3.697

被引量：

404