When dealing with perennial grasses that spread via rhizomes, tubers, or stolons, what is often required to control them?

When dealing with perennial grasses that spread via rhizomes, tubers, or stolons, what is often required to control them?

• A. Repeated applications of herbicides
• B. A single application of a selective herbicide
• C. No chemical control; renovation only
• D. Mowing without herbicide use

Answer: (A)

Perennial grasses that spread through rhizomes, tubers, or stolons keep a food reserve underground and can regrow from those structures even after the aboveground growth is killed. Because of that, a single herbicide treatment often removes only the visible shoots while the underground parts survive to produce new growth later. The most reliable way to eliminate these plants is to apply herbicides multiple times over the growing season (and sometimes across seasons) so that each flush of new growth is treated and the stored reserves are gradually depleted. Systemic products that move within the plant are typically used, and timing to when the plants are actively growing is important for translocation to the roots and stolons. This approach is usually part of an overall management program, since relying on one treatment alone rarely achieves complete control.

Perennial grasses that spread through rhizomes, tubers, or stolons keep a food reserve underground and can regrow from those structures even after the aboveground growth is killed. Because of that, a single herbicide treatment often removes only the visible shoots while the underground parts survive to produce new growth later. The most reliable way to eliminate these plants is to apply herbicides multiple times over the growing season (and sometimes across seasons) so that each flush of new growth is treated and the stored reserves are gradually depleted. Systemic products that move within the plant are typically used, and timing to when the plants are actively growing is important for translocation to the roots and stolons. This approach is usually part of an overall management program, since relying on one treatment alone rarely achieves complete control.