TECNO BILBAO Total Nitrogen ............................................................................................10% Ammonium Nitrogen ...................................................................................1% Nitrate Nitrogen 9% Neutral Ammonium Citrate and Water-soluble Phosphorus Pentoxide.. 5% Water-soluble Phosphorus Pentoxide .......................................................5% Water-soluble Potassium Oxide ...............................................................20% Water-soluble Calcium Oxide ...................................................................10% Water-soluble Magnesium Oxide ...............................................................2%