Basal bark treatments are often slower to show results but are used for selective control. Which statement reflects this timing?

Basal bark treatments are often slower to show results but are used for selective control. Which statement reflects this timing?

• A. Results are not immediately apparent
• B. Results are immediate within hours
• C. They never kill the targeted plant
• D. They only affect non-woody species

Answer: (B)

Basal bark treatments rely on the herbicide moving from the bark into the plant's vascular system. Because the chemical must be absorbed and translocated to disrupt the plant’s growth processes, visible effects don’t appear right away. You’ll often see changes in growth or dieback only after days to weeks, which is why this method is valued for selective control. The timing described here—results not being immediate—is the key idea. Immediate results would not reflect the typical behavior of basal bark treatments, and this method is commonly used on woody species where it can eventually kill or suppress the target while minimizing impact on non-target plants.

Basal bark treatments rely on the herbicide moving from the bark into the plant's vascular system. Because the chemical must be absorbed and translocated to disrupt the plant’s growth processes, visible effects don’t appear right away. You’ll often see changes in growth or dieback only after days to weeks, which is why this method is valued for selective control. The timing described here—results not being immediate—is the key idea. Immediate results would not reflect the typical behavior of basal bark treatments, and this method is commonly used on woody species where it can eventually kill or suppress the target while minimizing impact on non-target plants.