Discussion in 'Pesticide & Herbicide Application' started by RigglePLC, May 17, 2008.

  1. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 13,794

    Is any crabgrass emerged in your area? If so how big or how far along? Here the first crabgrass became visible about 10 days ago on a lawn neighbor's neglected lawn that had a serious crab problem last year. Growing degree days (base 32) of 700. The crabgrass is still small--two leaves spreading to about a half inch wide. Air temps here are about 65 to 70 this week.
  2. lawnspecialties

    lawnspecialties LawnSite Silver Member
    Messages: 2,524

    Down here, I applied Dimension in February and April. The only crabgrass I've seen so far is in the natural areas, cracks of sidewalks, and some of the garden beds.
  3. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 13,794

    It appears that crabgrass sprouts here in Grand Rapids at about 700 Growing Degree Days (base 32). (About May 4th in 2008). Sprouts about a quarter inch tall.
    This is Growing Degree Days (base 50), of about 250. Soil temp about 57 degrees F.
    This is for a very thin, sandy neglected test lawn, that had serious crabgrass problems in the previous year.

    On May 18 crabgrass is in 2 leaf stage, and about 3/4ths inch wide. Not sure if Dimension would be effective at this date, or what rate needed.
  4. robertsturf

    robertsturf LawnSite Bronze Member
    Messages: 1,406

    Not yet but have seen nutsedge!!!
  5. Hogjaw

    Hogjaw LawnSite Senior Member
    Messages: 386


    Don't know where you are in relations to Northeast Arkansas but nutsedge is practically taking over.........makes you thing of corn 2 weeks up.

    Maybe we can make it move northward then (just joking).
  6. mngrassguy

    mngrassguy LawnSite Silver Member
    Messages: 2,167

    Nothing here yet. Usually see it start around July 1st.

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