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首页> 外文期刊>Biocontrol Science and Technology >Effects of Carbofuran on Lantana camara and its biocontrol agent, Teleonemia scrupulosa
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Effects of Carbofuran on Lantana camara and its biocontrol agent, Teleonemia scrupulosa

机译：Carbofuran对Lantana Camara及其生物防治，Teexemia sruchulosa的影响

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This laboratory-based study sought to determine the efficacy of using carbofuran in an exclusion experiment aimed at assessing the impacts of biocontrol agents on Lantana camara L.?(sensu lato) (Verbenaceae). Two separate experiments were conducted, the first one on insect-free plants, to determine the effects of carbofuran solely on plant growth; and the second one, on Teleonemia scrupulosa St?l (Hemiptera: Tingidae) infested plants, with the objective of determining the impact of carbofuran on this biocontrol agent, as well as its impacts on plant growth. Carbofuran granules (10% a.i.) were applied at 7?g/m2 a.i. to the potting medium. It was found that carbofuran did not have a significant effect on plant growth. Total removal of T.?scrupulosa from exclusion plants (carbofuran-treated plants) was not achieved; however the low level of leaf feeding lesions on those plants indicated that carbofuran had considerably reduced the insect’s population density. Results from a bioassay showed 100% and 40% T.?scrupulosa mortality on leaves collected from carbofuran-treated and control plants, respectively, within three weeks of exposure. Analysis of chemical residue levels in the leaf material revealed that carbofuran potency only persisted for about three weeks, and was detectable at trace levels (0.1?mg/kg). It was therefore concluded that carbofuran was effective at reducing the population of T.?scrupulosa on its host plant, but only briefly. Carbofuran should be applied at least once every three weeks or at a higher dosage in order to maintain a low insect population for the duration of an experiment or to achieve total exclusion. For better insect removal, one should consider combining carbofuran and foliar insecticides.
机译：基于实验室的研究旨在确定使用碳呋喃在旨在评估生物防治药物对Lantana Camara L.?（verbenaceae）的影响的排除实验中的疗效。进行了两种单独的实验，第一个在无昆虫植物上，仅对植物生长来确定碳呋喃的影响;和第二个，在Textonemia scrupulosa st？l（hemiptera：tingidae）侵染植物，目的是确定碳呋喃对这种生物控制剂的影响，以及其对植物生长的影响。在7μl/ m 2 a.i中施加碳呋喃颗粒（10％a.i.）。到灌封介质。发现碳呋喃对植物生长没有显着影响。没有实现从排除植物（尸体呋喃处理的植物）的T.Oscrupulosa的总除去;然而，这些植物上的叶片喂养病变的低水平表明，碳呋喃大大降低了昆虫的人口密度。生物测定的结果在暴露的三周内分别在从碳呋喃处理和对照植物中收集的叶片上的100％和40％T.?scrupulosa死亡率。叶片材料中化学残留水平的分析显示，碳呋喃效力仅持续为约三周，并在痕量水平下检测（<0.1≤mg/ kg）。因此，得出结论是，碳呋喃有效地减少其宿主植物上的T.?scrupulosa的群体，而是简单地简要介绍。 Carbofuran应该每三周或更高的剂量施用一次，以便在实验期间保持低昆虫种群或达到总排除。为了更好的昆虫去除，应该考虑组合碳呋喃和叶面杀虫剂。

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