Which factor does NOT typically influence pesticide mobility in soil?

The cost of application does not typically influence pesticide mobility in soil because it primarily pertains to the economic aspects of pesticide use rather than the physical or chemical properties that affect how pesticides move through the soil. Mobility is primarily affected by characteristics such as soil type, pesticide persistence, and groundwater depth.

On the other hand, soil type plays a significant role in how easily pesticides can move; different soils have varying textures, structures, and organic matter content, all of which can impact absorption and drainage. Pesticide persistence, which indicates how long a pesticide remains active in the environment, also affects mobility, as more persistent pesticides may move further through the soil over time. Lastly, groundwater depth can determine whether a pesticide remains in the upper soil layers or can leach deeper, affecting the potential for groundwater contamination.