Which herbicide is noted as good for resistant grasses?

• A. Glyphosate
• B. 2,4-D
• C. Dichlorprop
• D. Bromacil

Answer: (A)

Grasses that have slipped past other herbicides often need a different mode of action to be killed. Glyphosate provides that, because it inhibits the enzyme EPSP synthase, a target not used by the older herbicides like 2,4-D or dichlorprop. That distinct action means grasses that survive those auxin-type products can still be controlled with glyphosate. It’s also broad-spectrum and systemic, so the chemical moves throughout the plant to kill new growth from the roots up, which helps in reducing grassy competition in forestry settings. Use it according to label directions, apply to actively growing plants, and be mindful of non-target injury since it is non-selective. In contrast, the other options are either more selective for broadleaf weeds or have activity that’s less effective on grasses, so glyphosate is noted as the better choice for resistant grasses.