Soil analysis recommendations

Discussion in 'Fertilizer Application' started by coolbrze, Jul 28, 2013.

  1. coolbrze

    coolbrze LawnSite Member
    Posts: 122

    We ran a soil sample on a clients lawn. Why is P so high? From the analysis, what does their lawn need?

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  2. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 12,076

    Phosphorus is high because past fertilizers probably contained it...even though grass doesn't usually need much. No problem...just do not include phos in your fertilizer program.
    Since potash is a bit on the low side. You should use something like 26-0-8, 24-0-11, or 28-0-7. A ratio of 4 to zero to 1 is about right. However, you should use a nitrogen that has about 50 percent of the nitrogen formulated as slow release nitrogen. This may be a bit hard to find as it is cheaper to use only 30 percent of the nitrogen as slow release.
     
  3. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,080

    Looks like a good winterizer is in order, so that takes care of the chemical side of your soil...

    What is the physical side of your soil telling you???
     

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