On Fri, 6 Mar 2009 07:49:18 -0600, "The moderator"
Did you test the from the same sample given to the County extension
office? Keep in mind there are pockets of soil with varying pH. Over
a 1 acre area I take 8 samples per year, all results are slightly
different but all taken 4-5 inches under the soil surface. If the
test results of one sample is way off, I tend to discard it and take
another sample. There is some risk of contamination during the sample
collection and possibly during the quantitative analysis.
I use about 500 to 700 pounds of lime over an acre of lawn and have
been doing this for many years. Finally, some samples are showing a
pH of 6.7 but none have shown alkaline.
I used to use test strips, but now use an electronic device
specifically made for soil testing. Not as accurate as a lab, but
more convenient and less expense.
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