Soil injection is described as

• A. A feeding needle is used to inject the solution.
• B. Injection directly into the trunk with tubing.
• C. A spray applied to leaves.
• D. Granular pesticide distributed with a drop spreader.

Answer: (A)

Soil injection means introducing the pesticide solution directly into the soil using a feeding needle, targeting the root zone so the plant takes it up from the roots. This method focuses on delivering liquid into the soil rather than applying it to leaves, trunks, or as surface granules, which is why using a feeding needle to inject the solution best describes soil injection.