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  2. 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.

  3. Preemergent herbicide - Wikipedia

    en.wikipedia.org/wiki/Preemergent_herbicide

    To prevent growth of crabgrass, preemergent herbicides must be applied at a critical time. If they are applied to the soil too early, they get washed too deep into the soil or washed away by rainwater. If they are applied too late, the key enzyme inhibited is no longer active. The best control requires a second application about 6–8 weeks later.

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

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

    How to Kill Crabgrass Before Crabgrass Grows. Your best bet is to stop crabgrass before it starts. “Crabgrass is easily controlled using a pre-emergent herbicide,” Waltz says.“You must apply ...

  5. Atrazine - Wikipedia

    en.wikipedia.org/wiki/Atrazine

    Atrazine was invented in 1958 in the Geigy laboratories as the second of a series of 1,3,5-triazines. [26] Atrazine is prepared from cyanuric chloride, which is treated sequentially with ethylamine and isopropylamine. Like other triazine herbicides, atrazine functions by binding to the plastoquinone-binding protein in photosystem II, which ...

  6. Master Gardener: Here are some tips on waging the war ... - AOL

    www.aol.com/master-gardener-tips-waging-war...

    Crabgrass can be pulled by hand in the summer or battled with a herbicide. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in ...

  7. List of herbicides - Wikipedia

    en.wikipedia.org/wiki/List_of_herbicides

    This is a list of herbicides.These are chemical compounds which have been registered as herbicides.The names on the list are the ISO common name for the active ingredient which is formulated into the branded product sold to end-users. [1]