Which application method uses tillage, rainfall, or irrigation to move pesticide into the soil?

Soil incorporation is the application method that utilizes tillage, rainfall, or irrigation to effectively move pesticide into the soil. This method is crucial for ensuring that the herbicide penetrates the soil profile where it can act on the target weeds' roots. By engaging in tillage, the surface residue is mixed into the soil, promoting better contact and efficacy of the pesticide.

Rainfall or irrigation aids in this movement by helping to dissolve the herbicide in water, allowing it to seep into the soil more efficiently. This method is particularly effective for pre-emergent herbicides, which are intended to control weeds before they germinate and emerge from the soil. Thus, soil incorporation enhances the bioavailability of the pesticide, allowing for improved weed management and reduced environmental risk.