The Volmer EcoZIP is the first device that deposits the slurry emission-free in and not on the turf.

• Depot fertilization: The nutrients are placed specifically in the root area where they are needed and not just close to the soil.
• Nitrogen losses are reduced to zero.
• Better plant development and increased dry matter yields (up to +30 % expected in grassland).
• Animals can return to the field more quickly after spreading. Forage, silage, hay & grain are not contaminated with manure, reducing the risk of animal diseases.
• No odor and no air pollution (no fine dust pollution).
• In contrast to competitor systems, the injection slot is completely closed and no plant damage occurs.
• Fertilization frequency can be reduced, which cuts operating and personnel costs.
• The EcoZIP is particularly suitable for crops due to the vertical, root-friendly immersion of the patented tools.
• Electronically controlled hydraulic coulter pressure for an optimum working pattern, for example in sandy or loess soils.
• Always optimum working depth, even with ruts or local compaction, thanks to electronic control of each row.
• No clod formation - the EcoZIP ensures a loose, crumbly soil structure.
• Predestined for direct sowing crops (no-till), as there is no soil movement.
• The organic matter remains on the surface and is not worked in (C/N ratio is maintained).

Struvite has a sand-like structure with a typical nutrient composition of 5%N, 23%P2O2 and 12%MgO. Struvit is a magnesium ammonium phosphate (MAP), which has the efficiency-improving advantage that part of the nitrogen from the liquid manure is bound as ammonium in Struvit and is protected against nitrification and leaching losses. Furthermore, the phosphate from the liquid manure in the new Struvit compound has very good citric acid solubility and thus plant availability via root exudates, on a par with triple superphosphate. The phosphate is thus protected against ageing and remains readily available to plants. Due to its relatively high weight (bulk density 1,380 kg/m³), Kieserit fine is difficult to mix homogeneously into a 20 m³ slurry tanker, for example. The "just-in-time" introduction of Kieserit fine into the distribution head has the advantage that an exact mixture can be produced and that crystallization only begins in the soil and no sand-like deposits can occur in the spreading vehicle. The media can no longer segregate until they enter the soil.

CONCLUSION:

• Close nutrient gaps in organic fertilizers for Mg and S
• Improve N and P efficiency through the struvite effect
• More root growth, more vital plants and better grain filling
• Phosphorus content in the soil is reduced in the medium and long term