By applying a nitrification inhibitor, the nitrogen yield of liquid manure improves by approximately 15%. Less nitrate is washed out and the emission of nitrous oxide is also halved. Application can be done with a field sprayer or during spreading of the liquid manure.
The 20% reduction in the permitted nitrogen supply is increasing interest in NV areas, but certainly also outside of them. These substances ensure that the ammonium (NH4+) in the manure is converted less quickly into the leaching-sensitive nitrate (NO3-). The net result is that the plant absorbs more nitrogen from the manure; the nitrogen yield increases and any supplementation of the nitrogen supply with artificial fertilizer can therefore be smaller. In addition, Vizura reduces the formation of nitrous oxide (a strong greenhouse gas) by 50% under all circumstances. Under oxygen-poor conditions, for example after heavy precipitation, Vizura indirectly prevents nitrogen loss through denitrification. All the effects mentioned above also apply to Vizura for ammonium- or urea-containing fertilizers.
Long lasting
The application of a nitrification inhibitor is simple. Several contractors already have spreading equipment with a dosing system for Vizura. The nitrification inhibitor can also be added to the manure pit or the manure basin; good mixing of the manure is then necessary. In a manure storage, Vizura remains stable for 3,5 months and works as soon as it is spread. Vizura can also be applied with a field sprayer, provided that this is done shortly (up to approximately 24 hours) before spreading the liquid manure. In all cases, the recommended dosage is 2 litres per hectare.
Positive Effects
In practice, various positive effects are experienced from the application of nitrification inhibitors. For example, many crops benefit from the long-term simultaneous availability of both ammonium and nitrate. The uptake of nitrogen is greater, even at lower temperatures. The uptake of ammonium also leads to a better uptake of other elements such as phosphate. In trials in grains and potatoes, the application of Vizura led to an increased yield of approximately 6%.