Johnny wrote:
Catching up- Can anyone respond to the factual nature of the
statement here- about silver ions killing organisms in the soil?
Johnny Silverseed- author:
"C/s...@ntibiotic Suprehero"
Hi Johnny,
The last sentance of this paragraph is what I was refering to. A link
to this report by the Canadian Gov. (B.C.) follows. Keep in mind the
toxic level noted is per kilogram of soil.
http://wlapwww.gov.bc.ca/wat/wq/BCguidelines/silver/bcsilver-36.htm#TopOfPage
Irrigation with 9.8 mg silver/L is toxic to maize and 4.9 mg/L is toxic
to lupines (Cooper and Jolly 1970). There was no significant effect on
wheat or maize at 460 mg/kg silver as AgI in sandy or loam soil but 640
mg/kg silver as AgI of soil inhibited germination of Engelmann spruce
seeds (Klein 1978). Spraying a AgNO3 solution at 9.5 mg silver/L caused
damage to Cattleya orchids (Beyer 1976) and a decrease was noted in the
growth rate of bean plants grown in a nutrient solution containing 9 µg
silver as AgNO3 /L. Silver levels in the sediments or soils which exceed
25 to 50 mg silver/kg may have significant effects on the heterotrophic
activities of the microbial flora (Sokoland Klein1975).
