Other Fertilizers
HI y'all,
Until yesterday when someone pointed out that the 20 pounds of N that a soil
report called for did not mean 20 pounds of some fertilizer but rather 20
pounds of N which might require 50 pounds of some product. I had not even
thought about that. This evening I came across some numbers for the other
two of the big three nutrients.
This is from the U of Washington Ag site. From notes for a class, I believe.
"The terms phosphate (P2O5) and potash (K2O) are standard units for
expressing the concentration of phosphorus and potassium in a fertilizer.
Fertilizer labels, soil test results, and extension bulletins all express
amounts of phosphorus and potassium in terms of P205 and K2O. If you need to
convert units from P and K to P205 and K2O, the conversions are: 1 pound P =
2.3 pounds P205, and 1 pound K = 1.2 pounds K2O.)"
The numbers in the P and O and after the K are subscripts in the original,
and could be read, P two, O five., as in H two O.
I hope this all causes more clarity than confusion.
Tomorrow I am taking a half day off from work to roto-till so tht the Big
Orange One will be ready in September.
John
John
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