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  2. Preemergent herbicide - Wikipedia

    en.wikipedia.org/wiki/Preemergent_herbicide

    A pre-emergence spray of herbicide being added onto a field of oilseed rape. Preemergent herbicides are a form of chemical weed control which prevent germinated weed seedlings from becoming established. In some areas of the world, they are used to prevent crabgrass from appearing in lawns. [1] Preemergent herbicides are applied to lawns in the ...

  3. Dithiopyr - Wikipedia

    en.wikipedia.org/wiki/Dithiopyr

    Dithiopyr is a preemergent herbicide for crabgrass control in turf and ornamental grasses. It is effective on 45 grassy and broadleaf weeds. [1] Dithiopyr inhibits root growth of susceptible weeds as well as turf grass and thus should be used only on established turf with a well-developed root system. Its duration of efficacy is approximately 4 ...

  4. How To Get Rid Of Crabgrass That's Growing In Your Lawn ... - AOL

    www.aol.com/lifestyle/rid-crabgrass-thats...

    Spot spray the product on crabgrass plants. You should see results in about 7 to 10 days with the crabgrass turning yellow and brown. In some cases, you may need a second application after 21 days ...

  5. How to Get Rid of Crabgrass, According to Lawn Care Experts

    www.aol.com/rid-crabgrass-according-lawn-care...

    Crabgrass, or Digitaria, is a headache for homeowners across the country.The weed, which is low to the ground and has many “legs” like a crab, is found in just about every type of turf and ...

  6. Pendimethalin - Wikipedia

    en.wikipedia.org/wiki/Pendimethalin

    Pendimethalin is an herbicide of the dinitroaniline class [2] used in premergence and postemergence applications to control annual grasses and certain broadleaf weeds. It inhibits cell division and cell elongation. Pendimethalin is listed in the K1-group according to the Herbicide Resistance Action Committee (HRAC) classification and is ...

  7. OSU Extension: The time to prevent crabgrass rapidly ... - AOL

    www.aol.com/news/osu-extension-time-prevent...

    Crabgrass is a summer annual grass that will re-establish itself each year from seed that remains near the soil surface from last year’s crabgrass crop. OSU Extension: The time to prevent ...