In the majority of fertilizers Sulphur is often contained as Sulphate an effective but easily leached form, giving an intense but short lasting effect. Azolfo 17.46 however, contains sulphur as S(2)O(3)2- in which two sulphur atoms are combined with three oxygen atoms. In the soil the S(2)O(3)2- ion is transformed into sulphate ions SO(4)2-, readily available to the plant, and elemental sulphur (S), which is absorbed more slowly and resists leaching.
The high "reducing" power of this product allows intake of those nutrients "locked up" in the soil in their oxidized form. The acidification induced during the transformation reactions allows utilization of nutrients made unavailable by calcareous soils.
Another important benefit of using Azolfo 17.46 is the reduction of nitrogen losses from the soil. Used in combination with other nitrogen fertilizers it acts as both urease enzyme and nitrification inhibitor, reducing nitrate leaching and ammonia volatilisation and allows a gradual intake of the nitrogen present (*).
The fungistatic effect of sulphur makes Azolfo 17.46 a formulation which gives healthier, better nourished crops.

(*) As indicated in the Final Report of the Contract no AIR-CT94-1953 in which are shown the results obtained in the research project on S2O32- carried out by various European Institutes.

Composition

Total Nitrogen (N)	17%
Nitric Nitrogen (N)	2%
Ammonium Nitrogen (N)	10,5%
Ureic Nitrogen (N)	4,5%
Water soluble Sulphuric trioxide (SO3)	46%

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