[NAFEX] nafex pH Question

road's end farm organic101 at linkny.com
Sat May 5 10:12:56 EDT 2007

On May 4, 2007, at 8:18 PM, oowonbs at netscape.net wrote:

> I did once see a map of the U.S. in an aggy book in
> the library... It was specifically a pH map.  It was
> very plain that pH in the eastern U.S. was/is, acidic.
> The west was alkalai. The center was neutral.

This may be true as an overall generalization; but don't assume that 
your particular soil fits the generalization. Get soil tests of the 
specific field.

In the Finger Lakes of NY soil types, and soil acidity, vary wildly 
even within small areas. It's not at all unusual for one farm to have 
multiple soil types, or for them to have different natural pH. This is 
I believe at least partly due to the fact that there was a lot of 
glacial activity here; but I think a similar effect might be produced 
in areas that were subject to major flooding, even thousands of years 

In addition to this factor, previous farm/garden activities may have 
affected pH and other nutrient levels.

Oh yes -- and you can indeed make your soil overly alkaline by applying 
too much wood ash in a small area over a number of years. I did exactly 
that, years ago.

Finger Lakes NY; zone 5 mostly
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