VULCANO EFFICIENT AND POWERFUL ACTION AGAINST DEFICIENCY OF IRON VULCANO (NPK 3.3.3 + 2MgO + 5 Fe + 11 SO3) is an organic fertilizer containing selected manure mixed with iron, magnesium and sulphur. The iron is strictly bound with organic matter and so it is totally available to crops, also in soil with high pH. VULCANO is ideal to prevent and cure ferric chlorosis and it is recommended to vineyard, fruit plants, horticultural plants in soil with pH > 7,5 and high content of limestone, that require a quickly increase of stable organic matter.   COMPOSITION NUTRIENTS   Organic Nitrogen (N) 3% Total phosphoric anhydride (P2O5) 3% Water-soluble iron (Fe) 5% Water-soluble potassium oxide (K2O) 3% Magnesium oxide (MgO) total 2% Sulphuric anhydride (SO3) total 11% Total Organic Carbon (C) 31% Organic matter 54% OTHER PARAMETERS   C/N 10,3% Formulation Pellet   VULCANO is a fertilizer allowed in organic farming according to EC REG. 834/2007.