Advanced Nutrition

Advanced Nutrition

Nitrification inhibition

Nitrification is a natural biological process of oxidation of ammonia (NH3) or ammoniacal forms (NH4 +) of nitrogen in nitrite (NO2-) by means of bacteria Nitrosomonas and then to nitrate (NO3-) by bacteria of the Nitrobacter family. The nitrification inhibitors are substances which retard the production of nitrate form of nitrogen (NO3-) in soil solution acting up and preventing the activity of bacteria Nitrosomonas.

NH4 + (Nitrosomonas) => NO2 - (Nitrobacter ) => NO3 –

The duration of inhibiting the production of nitrate form of nitrogen may be increased -in case of using fertilizers enriched with nitrification inhibitors- up to 10 weeks. This is of great importance because by this way losses of nitrogen can be minimized in order for the plant to have the time to absorb nitrogen before it is washed or denitrificated.

Urease inhibition

Urea into the soil through the mechanism of hydrolysis and the presence of urease enzyme is being converted to ammonium form (NH4 +) and is held by the colloids in the soil cation exchange sites. However, part of the urea nitrogen can suffer losses as ammonia gas (NH3) according to the equation:

 (NH2)2CO + 2H2O (urease)=> 2 NH4HCO3 => 2 NH3 + H2O + CO2

These losses of nitrogen can be enormous especially when the following conditions occur or their combination:

  • Not adequate incorporation of urea
  • High temperatures
  • High pH
  • Crop residues
  • Soils of low cation exchange capacity

Urease inhibitors are substances used to temporarily reduce the activity of the urease enzyme and slow hydrolysis rate of urea. There are many substances that can inhibit the action of urease, but only a few (e.g. NBPT) are non-toxic, effective at low concentrations, chemically stable and able to be mixed or coated with fertilizers containing urea. In case of using fertilizers enriched with urease inhibitor it has been observed that the urea breakdown (due to the hydrolytic action of urease enzyme) can be delayed up to 3 weeks. Thus, protecting urea  is of great importance because otherwise nitrogen losses from volatilization can reach or exceed 40%.

Fertislow Smart, Stabilure & Smart Max

granular fertilizer series FERTISLOW SMART, FERTISLOW STABILURE & fertislow smart max

Fertikom - Fertilizers of Komotini in order to meet the needs of a modern nutrition and fertilization of crops, created the following technologically advanced series of granular products enriched with nitrification and urease inhibitors.

FERTISLOW SMART (Products enriched with nitrification inhibitor)

Fertislow Smart 46-0-0  |  Fertislow Smart 45-0-0+TE

Fertislow Smart 40-0-0(S)  |  Fertislow Smart 35-0-0(S)

Fertislow Smart 32-8-0(S)+Zn  |  Fertislow Smart 30-5-5(S)+Zn

Fertislow Smart 26-5-5(S)+Zn  |  Fertislow Smart 25-10-5(S)+Zn

Fertislow Smart 24-10-0(S)+TE  |  Fertislow Smart 20-8-12(S)+B+Zn

Fertislow Smart 15-15-15(S)  |  Fertislow Smart 12-12-18(S)+Mg


FERTISLOW STABILURE (Products enriched with urease inhibitor)

Fertislow Stabilure

Fertislow Stabilure 46-0-0  |  Fertislow Stabilure 40-0-0(S)

Fertislow Stabilure 35-15-0(S)+TE  |  Fertislow Stabilure 35-6-10(S)+Zn

Fertislow Stabilure 32-8-5(S)+Zn  |  Fertislow Stabilure 30-12-0(S)+TE

Fertislow Stabilure 30-8-10(S)+Zn  |  Fertislow Stabilure 28-6-8(S)+Zn

Fertislow Stabilure 25-15-0(S)+TE  |  Fertislow Stabilure 24-8-12(S)+Mg+TE

Fertislow Stabilure 15-10-15(S)+Mg+B+Zn  |  Fertislow Stabilure 12-8-18(S)+Mg+TE


FERTISLOW smart max (Products enriched with nitrification & urease inhibitors)

Fertislow Stabilure

Fertislow Smart Max 46-0-0 | Fertislow Smart Max 40-0-0(S)

Fertislow Smart Max 32-8-0(S)+Zn | Fertislow Smart Max 30-5-5(S)+Zn

Fertislow Smart Max 28-12-0(S)+TE | Fertislow Smart Max 25-6-10(S)+Zn

Fertislow Smart Max 24-10-0(S)+TE