SOIL TEST...for the pro's

Discussion in 'Pesticide & Herbicide Application' started by mdlwn1, Nov 15, 2007.

  1. mdlwn1

    mdlwn1 LawnSite Silver Member
    Posts: 2,443

    I have recently taken on a large property that has numerous issues and I am now finally getting around to the turf. Do you any of you have direct experience with what effect different levels of the micro,s will have on the visual quality of turf? I took samples from the 4 main areas, with sample 1 being used as a control (perfect Kb..needs very little fert to stay green..doesnt get ANY visible fungus during the most humid of weather). Please ignore the Phos and Iron as that was recently done by the previous lawn guy and the lawn problems exsisted prior to the application. The only thing i really see being different among the samples is zinc, copper, and manganese. Ph issuses have been addressed recently (after the samples were taken) I have Kb, rye, Tf, and FF.
     

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  2. osuturfman

    osuturfman LawnSite Member
    Posts: 7

  3. mdlwn1

    mdlwn1 LawnSite Silver Member
    Posts: 2,443

    Thanks for the link. I have a good general understanding of turfgrass theory. I guess I was more looking for someone with direct experiance who could say........too much zinc will do this....or too much copper will do that......Does this book directly address these concerns?
     
  4. What soil depth was the sample taken at?

    Did they give you any recommendations?
     
  5. mdlwn1

    mdlwn1 LawnSite Silver Member
    Posts: 2,443

    Sample was taken from 2-4 inches. Recomendation was for a little potassium and some manganese. Does anyone know how parts per million equate to lbs per acre?
     
  6. lilmarvin4064

    lilmarvin4064 LawnSite Senior Member
    Posts: 757

    ppm = 2 (#/A)
     
  7. mdlwn1

    mdlwn1 LawnSite Silver Member
    Posts: 2,443

    ppm= 2 lbs/acre........I don't understand........if I have 50 ppm, how many lbs/acre do I have? If Juan has 7 beans and he gives 3...........................lol
     
  8. treemonkey

    treemonkey LawnSite Member
    Posts: 178

    It might be easier to understand if you put a "1" in front of the ppm.

    1 ppm = 2 lbs. per acre. Multiply your ppm by 2 to get a approximation of lbs. per acre. Therefore, 50ppm = 100lbs. per acre.

    Usually these values indicates "available" (to crop)nutrients, not total soil nutrients. Each lab uses it's preferred test method (regional) that correlates it's test results to the plant's/crop's needs based on research results (sometimes an educated guess).

    The 1 ppm = 2 lbs. per acre comes from a very general "rule of thumb" that a 6 2/3 inch deep layer of "average" mineral soil of one acre size weighs approximately 2 million pounds. Most soil test forms ask for sampling/plowed depth and I believe they adjust their recommendations based on this info. Some farmers plow their fields 9 inches deep. Lawns and no-till systems usually are calculated for about 3 inches deep +/-.
     
  9. mdlwn1

    mdlwn1 LawnSite Silver Member
    Posts: 2,443

    Thanks very much for the explanation.
     

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