you are absolutely correct. the site is put up by Mecklenburg County Family and
Consumer Education Page
http://turfgrass.cas.psu.edu/educati...rrWatQual.html
they dont talk about high pH, but they do say "High cencentrations of bicarbonate and
carbonate ions in irrigation water can induce precipitation of calcium and magnesium
ions to form calcium and magnesium carbonates, which have low solubility. The
precipitation of calcium and magnesium allows sodium ions to dominate and, thus,
increases the sodium hazard associated with the irrigation water."
OTOH, "pH - Where the pH of the irrigation water is greater that 8.4, bicarbonate and
sodium ion concentrations are often high. Where the pH of the irrigation water is
less than 6.5, iron and sulfate ion cencentrations are typically high. Attempts to
adjust the pH of irrigation water should be based on RSC values, not pH alone."
which means at high pH bicarb ions are high but not being "removed" somehow, unless
there is calcium or magnesium ions.
it is important to point out that those who have tried it have not been able to drop
their high pH. experiments. Ingrid
"Grubber" wrote:
OK Here's a .edu site
"Because of its chemical makeup, Baking Soda has unique capabilities as a Ph
balancer or buffer. Buffering is the maintenance of a stable pH balance, or
acid-alkali balance. As a buffer, Baking Soda tends to cause acid solutions
to become more alkali and to cause alkali solutions to become more acid,
bringing both solutions to a stable pH around 8.1 (slightly basic) on the pH
scale. A buffer also resists pH change in a solution, in this case
maintaining a pH of 8.1."
http://www.ces.ncsu.edu/mecklenburg/depts/fce/soda.htm
The other site was better because it actually explained the chemical
process. A .edu site doesn't mean the reader understands what is being
read.
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