The study was conducted to determine the efficacy of commercially available chemical compound used in management of tick infestation in this area where the Rhipicephalus microplus is the most prevalent species of ticks. The most important chemical compound used for controlling ticks in this area is cypermethrin, deltamethrin and amitraz. This is happen because cheap and easy availability of these compound. The engorged female R. microplus tick sample was collected from unorganised dairy farm of Mhow districts in Madhya Pradesh. The Adult Immersion Test (AIT) and larval packet test (LPT) was performed for the characterization of resistance in field tick population. The slope of mortality, lethal concentration for 50 % (LC₅₀), and resistance ratios (RR) were determined from the regression graphs of probit mortality of ticks plotted against log concentrations of chemical compound used in study. The resistant ration (RR) of cypermethrin was in the range of 0.76 to 1.45. Most of the population were found susceptibly in LPT and AIT and the slope value was recorded lower than the susceptible reference strain. In case of deltamethrin, the resistance ratio (RR) was in the range of 22.35 to 34.64 at level II and III and the slop value of field population was found comparatively low than susceptible reference strain. In amitraz, the resistance ratio (RR) was obtained as 2.23.On the basis of RR the tested tick showed resistance in adult stage at level I. The AIT bioassay was used for the characterization of resistance in field tick population. Efficacy of chemical compound was recorded on basis of resistance ratio and level of resistance was assessed. The data on field status of acaricide resistance in Mhow block of Madhya Pradesh state will be helpful to adopt suitable strategy to overcome the process of development of resistance in ticks.

进行了这项研究，以确定在该区域的management虱（Rhipicephalus microplus）是of虫最普遍的地区，用于管理tick虫感染的市售化合物的功效。用于控制area虫的最重要化合物是氯氰菊酯，溴氰菊酯和阿米特拉。发生这种情况是因为这些化合物便宜且容易获得。饱腹的雌性微小plus（R。microplus） tick虫样本是从中央邦（Madhya Pradesh）Mhow地区的无组织奶牛场收集的。进行成人浸没测试（AIT）和幼虫包测试（LPT）来表征田tick种群的抗药性。死亡率的斜率，致死浓度为50％（LC ₅₀），并从of的概率死亡率相对于研究中所用化合物的对数浓度绘制的回归图确定耐药率（RR）。氯氰菊酯的抗性比（RR）在0.76至1.45的范围内。在LPT和AIT中发现了大多数人群，并且记录的斜率值低于易感参考菌株。在溴氰菊酯的情况下，II级和III级的电阻比（RR）在22.35至34.64范围内，并且发现田间种群的斜率值比敏感参考菌株低。在Amitraz中，获得的抗性比（RR）为2.23。在RR的基础上，被测tick在成虫阶段显示出对I级的抗性。AIT生物测定用于表征田tick种群的抗性。根据电阻比记录化合物的功效并评估电阻水平。中央邦Mhow区块的杀螨剂抗药性田间状况数据将有助于采取合适的策略来克服s虫抗药性的发展过程。