Description Cornerstone Plus Herbicide - 2.5 Gallons Glyphosate - 41% Flexible, Broad-Spectrum Weed Control Cornerstone herbicides are postemergent, nonselective herbicides that are absorbed and translocated throughout annual and perennial grass and broadleaf weeds for âshoots-to-rootsâ control. Cornerstone herbicides control more than 100 annual and perennial weeds and includes a broad spectrum of uses, including over-the-top application to Roundup Ready alfalfa, canola, corn, cotton, soybeans and sugar beets. Winfield Cornerstone Plus is a highly effective post-emergent herbicide that targets and eliminates broadleaf weeds and annual and perennial grass. Contains glyphosate as its active ingredient which controls unwanted weeds and also helps in regulating plant growth. It is a broad spectrum herbicide that targets the roots, removing and killing broadleaf weeds. The Winfield Cornerstone Plus is a systemic herbicide that is proven to control over 100 broadleaf weeds and grasses. It has a water-soluble liquid formula, making it flexible and easy to apply. May be applied through different types of sprayers from most standard industrial to field-type sprayers. For best results, make sure that the spray coverage is complete and uniform. Active Ingredient: Glyphosate - 41% Targets: Woody brush, trees, and herbaceous weeds. Use: Forestry, preparing or establishing wildlife openings within forestry sites and maintaining logging roads. Easy to mix and apply with a flexible, wide window of the application.