Mixed nitrogen fertiliser, which provides nitrogen in ammoniacal and urea forms. These two forms of nitrogen provide the crop with nitrogen that is immediately available through the ammoniacal forms, as well as nitrogen that is available for a longer period of time as a result of the contribution of urea forms, whose transformation into assimilable nitrogen occurs according to the biological activity of the soil, coinciding with the greater demand for nitrogen by the crops.

NITROTOP 25 also provides elements of vital importance for the development of crops such as sulphur, magnesium and calcium, which complement the nitrogen formulation and contribute to increasing the efficiency, quality and quantity of crops.


Nitrogen (N) Total 25,0 %
Ureic nitrogen (N) 13,5 %
Ammoniacal Nitrogen (N) 11,5 %
Magnesium Oxide (MgO) Total 2,0 %
Trióxido de Azufre (SO3) Soluble al agua 37,0 %
Óxido de Calcio (CaO) Total 4,0 %





The combined supply of NITROTOP 25 Nitrogen + Sulphur improves the uptake and utilisation of nitrogenous forms. A sufficient level of sulphur is the key to improving the use of nitrogen by plants; deficient levels of sulphur cause a lower conversion of nitrogen compounds to proteins. Sulphur therefore favours the utilisation and uptake of a higher amount of nitrogen per kg of nitrogen fertiliser applied.