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The Apatite used on tobacco fields (as a phosphor amendment) has been suggested as the main reason tobacco causes cancer. It catches notice occasionally: http
by h2odragon 3y ago
The Apatite used on tobacco fields (as a phosphor amendment) has been suggested as the main reason tobacco causes cancer.
It catches notice occasionally:
https://www.gammaspectacular.com/phpBB3/viewtopic.php?t=671 https://www.gammaspectacular.com/phpBB3/viewtopic.php?t=671
I've inquired as to phosphate sources in fertilizers and gotten complete mystification as a response at the retail level. Manufacturers are much more forthcoming, but few garden center level folks have ever heard of a reason to avoid "rock phosphors."
- adrian_b 3y agoThat is not due to apatite per se, but to the radioactive impurities that are included in the natural rocks with apatite, in other phosphates, like monazite. The apatite that is used in food or in medical applications is pure, without such impurities. It is frequently obtained from bone meal, from cattle or other domestic animals, because this is cheaper than purifying the apatite extracted from rocks.