Translocated herbicides can be placed in soil to be taken up by roots but are mainly foliage applied. Which best describes this practice?

Translocated herbicides can be placed in soil to be taken up by roots but are mainly foliage applied. Which best describes this practice?

• A. They are placed in soil to be taken up by roots but are mainly foliage applied.
• B. They are applied only to the foliage and do not enter the soil.
• C. They are used only for non-woody plants.
• D. They are effective only when sprayed during night hours.

Answer: (A)

Translocated (systemic) herbicides move within the plant after uptake, so they can be placed in soil to be taken up by roots or applied to the foliage for absorption through the leaves. In practice, they are used mainly as foliage applications because leaves absorb quickly and the chemical is transported throughout the plant to roots, stems, and growing points, giving broad and faster control. Applying through the soil is possible but often less reliable due to soil binding, microbial degradation, variability in root uptake, and environmental factors. So the best description is that these herbicides can be placed in soil to be taken up by roots but are mainly foliage applied.

Translocated (systemic) herbicides move within the plant after uptake, so they can be placed in soil to be taken up by roots or applied to the foliage for absorption through the leaves. In practice, they are used mainly as foliage applications because leaves absorb quickly and the chemical is transported throughout the plant to roots, stems, and growing points, giving broad and faster control. Applying through the soil is possible but often less reliable due to soil binding, microbial degradation, variability in root uptake, and environmental factors. So the best description is that these herbicides can be placed in soil to be taken up by roots but are mainly foliage applied.