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| The whole thing is a load crap. Leave it to a tenured professor to come up with that one. Probably has no practical experience and wants the money available for grants that he can then apply for and come up with more bs ideas. Yes field runoff can contribute but a growing crop field very rarely runs off spring and fall are the concern. So cut the p and everything will be peachy right except you will get no yield. P is very hard to get soluable. Yes poo run straight into water is bad but applied to soil properly and yes that can include frozen ground, no. Where is the biggest sources of soluable p? sewage treatment plants and runoff from roads, alfalfa fields some of the biggest loads come from killed alalfa fields, no till (yep you got it there is reduced soil loss from no till but when it goes and some does a ton p is on then surface rather than worked through the profile.) Not saying notill is bad just it might need to be worked once in a while. No one has tested runoff from cities what's in it? Probably lots of p from oil? Just my theory. Check out WI Discovery Farms info good stuff.
Edited by fourcubs 10/1/2014 18:17
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Ohio State University Economist wants to tax phosphorus
