chicken manure
... that of all manures, chicken manure has the highest nitrogen, phosphorus, and potassium content?
... that of all <a href="./Manure" id="mwAjg" rel="mw:WikiLink" title="Manure">manures</a>, <b id="mwAjk"><a href="./Chicken_manure" id="mwAjo" rel="mw:WikiLink" title="Chicken manure">chicken manure</a></b> has the highest nitrogen, phosphorus, and potassium content?