Basal bark treatments are intended for trees up to what diameter and applied to which part of the stem?

Basal bark treatments are intended for trees up to what diameter and applied to which part of the stem?

• A. Up to 2 inches in diameter; entire height
• B. Up to 5 inches in diameter; lower 18 inches of the stems
• C. Up to 7 inches in diameter; middle of the stem
• D. Up to 10 inches in diameter; upper 6 inches of the stems

Answer: (B)

Basal bark treatments work by applying herbicide around the base of the tree so the chemical can be absorbed through the bark into the living cambial tissue. This method is practical on smaller trees where the bark is more permeable and the uptake path is reliable. The standard practice is to treat trees up to five inches in diameter and to apply the product along the lower portion of the stem, typically the bottom 18 inches. Placing the treatment there ensures the chemical contacts the living tissue near the soil line, where uptake is most effective, and helps avoid issues that can occur higher on the trunk or on larger trees. If the tree is larger or the bark conditions aren’t favorable, other application methods are used.

Basal bark treatments work by applying herbicide around the base of the tree so the chemical can be absorbed through the bark into the living cambial tissue. This method is practical on smaller trees where the bark is more permeable and the uptake path is reliable. The standard practice is to treat trees up to five inches in diameter and to apply the product along the lower portion of the stem, typically the bottom 18 inches. Placing the treatment there ensures the chemical contacts the living tissue near the soil line, where uptake is most effective, and helps avoid issues that can occur higher on the trunk or on larger trees. If the tree is larger or the bark conditions aren’t favorable, other application methods are used.