Iron question

Discussion in 'Pesticide & Herbicide Application' started by redclay, Feb 7, 2006.

  1. redclay

    redclay LawnSite Member
    from GA
    Posts: 28

    How long does the green up last after iron is applied on cool season grasses in transition zone? Does temp make a difference in how long it lasts? thanks
     
  2. YardPro

    YardPro LawnSite Gold Member
    Posts: 3,563

    it will last a few weeks...
    plant metabolism will affect the uptake time and how long it lasts
    also the pH of your soil has more of an effect on the iron and the color of your plants than any other actor...
    high pH will inhibit iron uptake
     
  3. ThreeWide

    ThreeWide LawnSite Bronze Member
    Posts: 1,116

    If you are in the area of GA red clay, high pH is of little concern.

    Our clay soils are acidic, which is the zone where Iron makes a bigger impact. If the lawn responds very well to Iron, that is not necessarily good. It is a sign you need to apply lime.

    The type of Iron you apply makes a difference in cooler weather. I'm sure there are folks here who can elaborate on cheleated sources.
     
  4. redclay

    redclay LawnSite Member
    from GA
    Posts: 28

    thanks for replys

    How fast does iron leech out or break down in cold weather?

    Have not been using combo fert/pre em with iron in first round; but considering it.

    does the difference show up or get lost in the spring green up?

    thanks guys
     
  5. YardPro

    YardPro LawnSite Gold Member
    Posts: 3,563

    it all depends on the cation concentration in your soil....

    your area is opposite of mine... pH here is 8-9, we NEVER have to lime.. lots of sulphur
     

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