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Economic feasibility of methoprene applied as a surface treatment and as an aerosol alone and in combination with two other insecticides

机译:甲基异戊二烯单独或与其他两种杀虫剂组合使用作为表面处理剂和气雾剂的经济可行性

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摘要

Economic evaluations of integrated pest management strategies are becoming increasingly important as restrictions on conventional insecticides continue to become more stringent and chemical control costs rise. Aerosol treatments with insect growth regulators alone and in combination with conventional contact insecticides may be a feasible alternative to expensive and highly toxic fumigants such as methyl bromide for control of the Indianmeal moth (Plodia interpunctella (Hübner)). Average calculated mortality of Indianmeal moth eggs exposed to surface applied methoprene, aerosol methoprene alone and in combination with esfenvalerate and synergized Pyrethrins is 55.0, 69.0, and 94.6%, respectively. Temperature effects on development time makes frequency and timing of insecticide applications very important as evidenced by simulations of population levels in response to a variety of treatment dates by diet, and become critical in situations where survival of Indianmeal moth is high. Using a measurement of risk that is equal to deviations below a target mortality goal (99%), we are able to optimize cost and frequency of application using simulated mortality data for each of the treatment strategies. Optimal timing of each insecticide treatment depends heavily on the rate of development by diet. This type of analysis helps pest control operators and managers by showing consequences of treatment scenarios in time and cost.
机译:随着对常规杀虫剂的限制越来越严格以及化学控制成本的提高,对有害生物综合治理策略的经济评估变得越来越重要。单独使用昆虫生长调节剂进行气雾剂处理,或与常规接触性杀虫剂结合使用,可能是替代昂贵且剧毒的熏蒸剂(如甲基溴)来控制印度粉蛾(Plodia interpunctella(Hübner))的可行替代方法。单独暴露于表面施用的甲基戊二烯,气雾剂甲基戊二烯以及与艾司戊戊酸酯和增效菊酯联用的印度粉蛾卵的平均计算死亡率分别为55.0、69.0和94.6%。温度对发育时间的影响使得杀虫剂施用的频率和时机变得非常重要,正如通过模拟饮食对各种处理日期做出的种群水平模拟所证明的那样,并且在印度粉蛾生存率很高的情况下变得至关重要。使用等于偏离目标死亡率目标(99%)的偏差的风险度量,我们能够使用每种治疗策略的模拟死亡率数据来优化应用的成本和频率。每种杀虫剂治疗的最佳时机在很大程度上取决于饮食的发育速度。这种分析通过显示治疗方案在时间和成本上的后果,可以帮助害虫控制操作者和管理者。

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