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melting urea and spraying out of the z spray.

Discussion in 'Fertilizer Application' started by ant, Sep 13, 2012.

  1. ant

    ant LawnSite Silver Member
    Messages: 2,453

    Thinking about this approach! And z spray owners do this with good results? If so post how u do it.
    Posted via Mobile Device
     
  2. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 12,669

    Z-spray is too low volume to use water as a carrier.
    If you were using one-third gallon per thousand sqft...and if you wanted to apply one pound of nitrogen...you would need to add 117 pounds of urea to your tank. Concentrated solution would probably burn the grass.
    http://www.extension.umn.edu/distribution/horticulture/dg6551.html

    If...I understand your question.

    Urea is soluble at 119 grams in 100 grams of water (at 77 degrees). So if a gallon of water weighs about 8.3 pounds, you can dissolve about 9 pounds of urea in it, as a maximum.
     

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