The presence of weeds and brush in a pasture often indicates poor management, typically caused by animals over-grazing, poor stand density or inadequate fertilization. Because they compete with desirable pasture species for water, sunlight and nutrients, their presence reduces both the longevity and nutritional value of pasture.

The best weed control is achieved by maintaining a dense, healthy stand of grasses and legumes (alfalfa, clover, etc.) through proper fertilization, cutting/mowing management, and higher seeding rates.

Once broadleaf weeds take root in a pasture, chemicals such as 2, 4-D, Banvel®, or Crossbow® may be used to take control. However, keep the following in mind:

• Chemicals are non-selective, they kill beneficial broadleaf plants - like legumes and clovers - in addition to noxious plants.
• To control braodleaf weeds in a legume/grass pasture must be done the year before planting a legume, mowing may be the best alternative.
• For chemicals/herbicides to be effective, weeds must be actively growing when the herbicide is applied. Follow the label.
• A glyphosate product such as Round-Up® can be used to remove difficult perennials (like quackgrass); however, glyphosate will take out beneficial plants as the same time so you will be required to reseed those areas.
• Herbicides are best to apply herbicides in early spring before dairy cattle are turned out or late fall after they are no longer grazing.

CAUTION!!

Use chemicals/herbicides only when necessary and at the recommended dosages and timing to keep residues within the limit set by the law. Before using and herbicide, read the label and follow all directions and safety precautions listed.