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首页> 外文期刊>Journal of Economic Entomology >Evaluation of a commercially available beneficial insect habitat for management of Lepidoptera pests
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Evaluation of a commercially available beneficial insect habitat for management of Lepidoptera pests

机译：评价用于鳞翅目害虫的可商购的有益昆虫栖息地

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Afield study was conducted in 2003 and 2004 at the Center for Environmental Farming Systems in Goldsboro, NC, to evaluate the effectiveness of a commercially available beneficial insect habitat in decreasing pest caterpillar populations in organically managed tomato, Lycopersicon esculentum Mill., plots. Six pairs of tomato plots were established and a commercial beneficial insect habitat seed mix (Peaceful Valley's Good Bug Blend) transplanted around the perimeter of treatment plots, whereas a brown-top millet, Brachiaria ramose (L.) Stapf., border was planted around control plots. Egg predation, egg parasitism by trichogrammatid wasps, and larval parasitism by braconid wasps was monitored throughout the growing season to determine whether habitat increased their activity. In both years of this study, the density of Helicoverpa zea (Boddie) and Manduca spp. eggs was not significantly different between treatment and control plots. Although parasitism was the most important component of egg mortality (19-49%), parasitism was not significantly different between habitat types. Identifiable predation was a minor component (3-9%) of egg fate; it is possible that unidentified predation may be part of the approximate to 35-52% of eggs that met unknown fates. Larval parasitism levels ranged from approximate to 10 to 90% but was not significantly influenced by the presence of beneficial insect habitat in either year of the study. These results demonstrate that natural enemy activity in organic tomatoes was not amplified, and pest populations were not reduced by the presence of a commercially available beneficial insect habitat.
机译：2003年和2004年，在北卡罗来纳州戈德斯伯勒的环境农业系统中心进行了田间研究，以评估可商购的有益昆虫生境在减少有机管理的番茄Lycopersicon esculentum Mill地中害虫毛虫数量上的有效性。建立了六对番茄样地，并在处理样地周围移植了商业上有利的昆虫栖息地种子混合物（和平谷的Good Bug Blend），而棕顶小米Bracharia ramose（L.）Stapf。则在其周围种植了边界。控制地块。在整个生长季节期间，对卵的捕食，三毛线虫黄蜂的卵寄生和卵状黄蜂的幼虫寄生进行监测，以确定栖息地是否增加了它们的活动。在这项研究的两年中，Helicoverpa zea（Boddie）和Manduca spp的密度。处理和控制地块之间的卵无显着差异。尽管寄生虫是卵死亡率最重要的组成部分（19-49％），但寄生虫在生境类型之间没有显着差异。可识别的捕食是鸡蛋命运的次要成分（3-9％）;不明身份的捕食可能是大约35-52％遇到未知命运的卵的一部分。幼虫寄生虫的水平范围从大约10％到90％，但在研究的任何一年中都没有受到有益昆虫栖息地的明显影响。这些结果表明，有机番茄中天然天敌的活动没有得到放大，并且由于存在商业上有益的昆虫栖息地，害虫数量也没有减少。

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