My computer hasn't been working very well the last couple of days (sometimes pages and videos won't load at all and it crashes), but I managed to get some preliminary information. I'm surprised (unless I missed something) that there's no "Healthy Ecosystem" forum here at CZ.
I don't know of any studies, so it seems that we have alot of research to do on our own to get any answers.
I know nothing about Chemistry and have no medical knowledge, so I don't know what information would be helpful, but at this point, any research has to start somewhere. http://www.absoluteastronomy.com/topics/Phosphorus
White phosphorus produces phosphoric acid. As far as I know, all acid is neutralized by baking soda, but phosphorus is also used in fertilizer, neutralization in soil might cause a chemical imbalance in the soil (more info needed from experts).
Diatomaceous Earth has been used as fertilizer (mineral content) and also FOOD GRADE diatomaceous earth is used as an intestinal cleanse in humans and animals.