Steep slopes, frozen ground, or saturated soils should not be treated by which method?

Steep slopes, frozen ground, or saturated soils should not be treated by which method?

• A. Foliage spray
• B. Basal application
• C. Soil-active treatment
• D. Cut stump treatment

Answer: (C)

Steep slopes, frozen ground, or saturated soils create conditions where soil-based herbicide methods lose effectiveness and pose environmental risks. Soil-active treatments depend on the herbicide moving through and being absorbed by plant roots from the soil after application. On steep slopes, the chemical-laden soil is prone to runoff and erosion, carrying the herbicide away from targets and toward waterways. When the ground is frozen, soil movement and root uptake are minimal, so the herbicide doesn’t reach the roots that need protection. In saturated soils, high moisture can cause unpredictable movement or leaching, reducing root contact and increasing the chance of contamination. Because of these issues, soil-active treatment isn’t suitable in these conditions. The other methods—foliage spray, which delivers herbicide to the leaves; basal application, which treats the stem near the base; and cut stump treatment, which applies the herbicide directly to freshly cut stumps—bypass the soil and work more reliably under these challenging ground conditions.

Steep slopes, frozen ground, or saturated soils create conditions where soil-based herbicide methods lose effectiveness and pose environmental risks. Soil-active treatments depend on the herbicide moving through and being absorbed by plant roots from the soil after application. On steep slopes, the chemical-laden soil is prone to runoff and erosion, carrying the herbicide away from targets and toward waterways. When the ground is frozen, soil movement and root uptake are minimal, so the herbicide doesn’t reach the roots that need protection. In saturated soils, high moisture can cause unpredictable movement or leaching, reducing root contact and increasing the chance of contamination. Because of these issues, soil-active treatment isn’t suitable in these conditions. The other methods—foliage spray, which delivers herbicide to the leaves; basal application, which treats the stem near the base; and cut stump treatment, which applies the herbicide directly to freshly cut stumps—bypass the soil and work more reliably under these challenging ground conditions.