What formula is used to quantitatively estimate the efficacy of adulticides?

Abbott's formula is utilized to quantitatively estimate the efficacy of adulticides, particularly in the context of evaluating the mortality rates of insects after exposure to these chemical agents. The formula is instrumental in adjusting the observed mortality rate to account for control or untreated populations, allowing a clearer understanding of the adulticide's effectiveness.

The significance of Abbott's formula lies in its ability to provide a more precise measure of killing efficiency by minimizing the influence of natural mortality that may occur even in the absence of treatment. This adjustment is crucial in mosquito control studies, as it ensures that the efficacy results reflect the direct impact of the adulticide used.

In contrast, the other formulas listed do not serve this specific purpose in entomology or pest control. Hence, Abbott's formula stands out as the proper choice for evaluating the performance of adulticides in controlling mosquito populations.