Information on Phosphonic Acid?greenspun.com : LUSENET : David's Organic Forum : One Thread
My soil test from red Krasnozem soil at Newrybar, NSW, Australia registered a very high level of sodium. This was found to be in a narrow band inside the fenceline. 15-20 years ago, Phytopthera cinnamomi eradicated an entire crop of Avocados on the adjacent property. I wondered if Phosphonic Acid was used to treat the Phytopthera, would the spray drift have made my soil saline? The pH is also very acidic on this site (4.5 pH). There appear to be no other factors which could have caused this salinity.
-- Erika Birmingham (firstname.lastname@example.org), March 18, 1998