Which of the following is not a factor affecting the adsorption of pesticides into soil particles?

Soil temperature does not significantly affect the adsorption of pesticides into soil particles. Adsorption primarily depends on the interaction between the pesticide molecules and the soil particles, which is influenced by the characteristics of the pesticide—such as its chemical structure, polarity, and molecular weight—along with soil properties and conditions.

Soil moisture plays a crucial role because it can influence the availability of active sites on soil particles for pesticide binding; too much or too little moisture can hinder adsorption processes. Soil pH, another important factor, affects the charge and availability of soil colloids, impacting how well pesticides adhere to soil particles. In contrast, while soil temperature can influence other physical and chemical processes within the soil, it does not have a direct impact on the adsorption mechanism itself.