CULT: - soil pH
- To: Multiple recipients of list <i*@rt66.com>
- Subject: CULT: - soil pH
- From: R* B* <r*@admingw.hsc.unt.edu>
- Date: Wed, 26 Mar 1997 16:00:31 -0700 (MST)
David Silverberg wrote:
> To RAISE soil one unit of pH using:
>
> HYDRATED LIME:
> 1. Light soil - 1 & 1/2 lb per 100 sq ft
> 2. Heavy soil - 3 & 1/2 lb per 100 sq ft
> etc.
I don't think it's quite this simple. It depends on where you start.
pH is a log scale. If it takes X amount of alkali to raise the ph
from 6 to 7 it should take 10 times X to raise the pH from 7 to 8 and
100X to go from 8 to 9. The same is true for acid except going the
other way on the scale -10X more acid to lower each unit.
Rodney Barton
rbarton@hsc.unt.edu
Hickory Creek, (North Central) Texas, USA
Zone 7/8, typical temp range 15 - 105 F (-9 - 41 C)
AIS, SIGNA, SPCNI, SLI, FWIS, Iris-L
North American Native Iris Web Page:
http://molly.hsc.unt.edu/~rbarton/Iris/NANI.html
