Posted 12/23/2017 19:50 (#6449816 - in reply to #6449335) Subject: RE: Manure Management????
Illinois
Yes I have mine tested and cut back on P and K accordingly. Due to how we rotate it is always applied after silage and before beans, I never worry about the N.
I don't compare to soil samples because I don't think the soil tests are accurate enough. But I do go off removal rates.