... source:Methylene Urea/Urea Formaldehyde 2.Element:NPK+TE(Ca,Mg,S,Cu,Fe,Mn) 3.Can be customized to your ... high-efficiency slow-released fertilizer used for turf, which is made from NPK plus Ca, Mg, Fe etc. secondary trace elements. We ... resistance. In addition, this product can remain N in the soil for longer by decreasing N volatilization loss in form of NH3 ...