What factor is NOT a concern when performing soil incorporation?

The presence of companion plants is not typically a concern when performing soil incorporation of pesticides. This process primarily focuses on integrating pesticides, particularly herbicides, into the soil to enhance their effectiveness in targeting unwanted vegetation.

Incorporation is influenced by factors such as herbicide selection, as different herbicides have varied properties impacting their behavior in the soil. Soil type is also critical because it affects water retention, absorption, and the bioavailability of the herbicide, which in turn influences its efficacy against target pests or weeds.

Additionally, the type of mechanical mixer used plays a role in how evenly and effectively the herbicide is mixed into the soil. Different mixers can affect the depth and distribution of the herbicide, thus impacting its performance.

While companion plants may have ecological implications or serve as biological controls, their presence does not directly influence the mechanical and chemical aspects of soil incorporation, making them the least relevant concern in this context.