Fertilizer question for the pros

Discussion in 'Fertilizer Application' started by Gabby, Apr 26, 2007.

  1. Gabby

    Gabby LawnSite Member
    Messages: 140

    What exactly do the 3 numbers on the fertilizer bags mean? Some examples:

    Scotts Pro Select with Halts 19-0-7
    Scotts Turfbuilder with Halts 30-0-3
    Scotts Pro Select Weed and Feed 18-0-9
    Scotts Turfbuilder with Weed and Feed 28-3-3

    Why are the two halts ones different and why are the two weed and feed ones different? Thanks in advance.
  2. unit40

    unit40 LawnSite Member
    Messages: 100

    The numbers represent the percentage of Nitrogen-phosphrous-potassium in the bag.
  3. Nathan Robinson

    Nathan Robinson LawnSite Senior Member
    from 47712
    Messages: 317

    what unit 40 said!
  4. bug-guy

    bug-guy LawnSite Bronze Member
    Messages: 1,033

    generally speaking if you wany 1 pound of nitro per 1000 sq ft take the first # and divide itin 1/2 and you will get the sq. footage per 50 lb bag. combo products usaully has rates per the pesticide in the product.

    straight fert example

    16-0-8 = 8000 sq ft per 50 lb bag
    24-2-11= 12000 sq ft

    alot of people confuse high nitro as bad ... it just covers more area
    this is a general rule there are exceptions
    covers 12000 sq ft per 50# bag
    1/2 of n and 1 # of k per 1000 st ft

    scotts usally makes their bags cover 5000sq ft
    you need to compare covering and if using combo percent of pesticde on product
  5. lescojdl

    lescojdl LawnSite Member
    Messages: 40

    If you don't know what the 3 numbers on the bag mean, you should probably sub out your fert apps and I doubt you have a pesticide license to legally put down combo products, i.e. weed & feed.

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