What does soil injection involve?

Soil injection is a method that involves applying pesticides directly beneath the soil surface using a tool that creates a hole or channel for the pesticide application. This technique is particularly effective for targeting root systems of plants, pests in the soil, and ensuring that the pesticide reaches the areas where it can be most effective.

By injecting pesticides under pressure into the soil, the treatment allows for deeper penetration and can minimize evaporation and runoff, making it a more efficient way to deliver the active ingredients. This method also helps in reducing the exposure of the pesticide to non-target organisms, including beneficial soil microbes and surface-dwelling wildlife.

In contrast, applying pesticides above the soil surface may not effectively reach the pests or plants needing treatment, while using an enclosed area refers to situations where pesticide applications are confined to a specific space, which is not the case with soil injection. Applying pesticides onto foliage addresses insect and weed control through direct contact, which is different from the targeted application into the soil that soil injection provides.

Thus, the specific nature of soil injection, involving the application of pesticides directly beneath the soil, distinguishes it clearly from the other methods listed.