Atrazine is among the most widely used of chemical herbicides. Inexpensive and readily available, atrazine is found in many commercial herbicide brands for both agricultural and home use. The herbicide is broad-spectrum and is effective against broadleaf weeds and grasses.
Pre-emergent Broadleaf Weeds
Cocklebur, jimsonweed, ground cherry, lambsquarters, morningglory, mustards, ragweed, pigweed, velvetleaf, purslane, nightshade, Spanish needle, broomweed, clovers, chickweed and kochia are common broadleaf weeds for which atrazine is rated to kill or control.
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Many weed grasses, such as wiregrass, bluegrass, sandspur, smutgrass, barnyard grass, foxtail, crabgrass, wild oats, witch grass and quackgrass are also controlled with atrazine.
Atrazine, when combined with emulsifiable agricultural oil and water is effective against post-emergent weeds. These include morning glory, cocklebur, jimsonweed, lamb's quarters, pigweed, ragweed, various mustard weeds, buckwheat, purslane, amaranth, Spanish needle, velvetleaf and most grasses.
Atrazine is approved for agricultural applications for pine, fir and other conifer plantings, corn, sorghum, wheat, sugar cane, switchgrass and certain fruit and nut trees. Commercial and home applications include weed control in lawns consisting of St. Augustinegrass, centipedegrass, zoysiagrass and Bermudagrass.