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  2. Preemergent herbicide - Wikipedia

    en.wikipedia.org/wiki/Preemergent_herbicide

    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 spring and autumn, to prevent the establishment of weed seeds. They will not ...

  3. Trifluralin - Wikipedia

    en.wikipedia.org/wiki/Trifluralin

    Trifluralin is a common pre-emergent selective herbicide, a dinitroaniline.With about 14 million pounds (6,400 t) used in the United States in 2001, [3] and 3–7 million pounds (1,400–3,200 t) in 2012, [4] it is one of the most widely used herbicides.

  4. Neil Sperry: It’s time for apply preemergent in Tarrant ...

    www.aol.com/neil-sperry-time-apply-preemergent...

    One other pre-emergent herbicide, Pendimethalin, also has post-emergent characteristics. It is used both to prevent germination of the same list of grassy weeds, also as a means of eliminating ...

  5. Pendimethalin - Wikipedia

    en.wikipedia.org/wiki/Pendimethalin

    Pendimethalin acts in both pre-weed-emergence and early post-emergence. Pendimethalin is absorbed into roots and shoots, inhibits cell division and prevents growth, [10] to prevent weeds from emerging, particularly during the development phase of the crop.

  6. How to Stop Crabgrass From Taking Over Your Lawn - AOL

    www.aol.com/stop-crabgrass-taking-over-lawn...

    Pre-emergent herbicides won’t kill crabgrass that has already sprouted. If you didn’t get pre-emergent down at the optimal time, you can dig up baby crabgrass plants by hand when they have ...

  7. 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.