The impact of thiamethoxam on bumble bee broods (Bombus terrestris L.) following drip application in covered tomato crops

Anzeiger für Sch?dlingskunde Pub Date : 2003-06-05 DOI:10.1046/j.1439-0280.2003.03017.x

B. Sechser, J. Freuler

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引用次数: 8

Abstract

The side effects of the neonicotinyl compound thiamethoxam on the brood of bumble bees (Bombus terrestris L.) were investigated on tomatoes in plastic tunnels and glasshouses.

Preceeding trials had revealed a strong contact and stomach activity of the compound by foliar application. A decisive improvement was obtained by replacing the foliar by drip irrigation of thiamethoxam at rates between 150 and 161 g ai/ha. The mortality figures of all bumble bee stages dropped to the level in the untreated control. No dead bumble bees were found in the thiamethoxam treated tunnels/glasshouses on the ground.

Thiamethoxam could be rated as being harmless to bumble bees with a single application through the irrigation system. No spilling of this compound during the application should occur to avoid intoxication of adult bumble bees by oral uptake or contact contamination during the cleaning process. If multiple applications via the irrigation system or under any hydroponic growing conditions is considered, further sequential testing of this mode of use is recommended.

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噻虫嗪对大黄蜂（Bombus terrestris L.）在覆盖番茄作物中滴灌后的影响

在塑料隧道和温室中的番茄上研究了新烟碱基化合物噻虫嗪对大黄蜂（Bombus terrestris L.）孵化的副作用。孕前试验表明，通过叶面施用，该化合物具有很强的接触性和胃活性。通过以150至161的速率滴注噻虫嗪代替叶面，获得了决定性的改善 g艾/公顷。所有大黄蜂阶段的死亡率都下降到了未经治疗的对照组的水平。在地面上经噻虫嗪处理的隧道/温室中没有发现死的大黄蜂。通过灌溉系统单次施用噻虫嗪可以被评为对大黄蜂无害。在使用过程中不应出现这种化合物的溢出，以避免成年大黄蜂在清洁过程中因口服或接触污染而中毒。如果考虑通过灌溉系统或在任何水培生长条件下进行多次应用，建议对该使用模式进行进一步的顺序测试。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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