USDA Forest Service, Insects, Diseases and Invasive Plants Unit, Starkville, MS, USA.
Pest Manag Sci. 2012 Jul;68(7):1019-25. doi: 10.1002/ps.3261. Epub 2012 Feb 28.
The 30 month longevity, mobility and insecticidal activity of a combination of acetamiprid and bifenthrin currently marketed in the United States for the prevention of termite infestation in buildings was investigated in greenhouse and laboratory studies.
Acetamiprid dissipated to below the limit of detection within 7 months of application, while bifenthrin remained in the soil at levels sufficient to kill termites for the duration of the study. Acetamiprid was detected in decreasing amounts in eluates of treated soil from months 1 to 4, while no bifenthrin was detected in eluates at any time. The treated soil remained toxic to termites for the 30 month duration of the study. Two indices of synergy between technical-grade acetamiprid and bifenthrin demonstrated that it is unlikely that there would be any synergism between the two active ingredients in the field. The presence of vegetation did not have a significant effect on the longevity of bifenthrin, except at intermediate times, where residues in the treated soil were higher in vegetated plots, depending on depth and time.
Acetamiprid has a short residual time in soil, and this formulation's effectiveness beyond about 7 months against subterranean termites is due to the bifenthrin content.
在美国，目前有一款将噻虫胺和联苯菊酯混合而成的产品，用于预防建筑物内的白蚁侵害，其 30 个月的持效期、移动性和杀虫活性在温室和实验室研究中得到了调查。
噻虫胺在施药后 7 个月内消散至检测限以下，而联苯菊酯在土壤中的残留水平足以在研究期间杀死白蚁。施药土壤的浸出液中，噻虫胺的含量从第 1 个月到第 4 个月逐渐减少，而在任何时候都没有检测到联苯菊酯。在研究的 30 个月内，处理过的土壤对白蚁仍然具有毒性。技术级噻虫胺和联苯菊酯之间的两种协同作用指标表明，这两种活性成分在田间不太可能产生协同作用。植被的存在并没有对联苯菊酯的持效期产生显著影响，只是在中间时间，处理过的土壤中的残留量在植被区更高，具体取决于深度和时间。
噻虫胺在土壤中的残留时间很短，这种配方在防治地下白蚁方面的有效性超过 7 个月，这是由于联苯菊酯的含量。
