So now that we have talked about forms, where does this leave us? What we have seen is that phosphorus can change forms, but all these forms stayed in the liquid. This means that if the phosphorus was there to start with, it will be there when we land apply it (unless we spill some or if rainwater leaches through it and then flows away). However, just because it is there, doesn’t mean we’ll be able to capture it an land apply it. Since the particulate phosphorus is attached to solids, it is distributed like the solids. This means that the sludge rich manure often will have higher phosphorus contents and watery manure from the surface will have less. To get uniform phosphorus concentration we want to either get those solids evenly mixed in the manure, or to get as much of the phosphorus as possible into a dissolved form.