Vogelsang aim to help growers fully utilize nutrients within the soil with it’s newly launched product, SyreN.

Founded in 1929, Vogelsang GmbH and Co. is a specialist in individually configurable machines for the agricultural technology, biogas, industrial, transportation, and waste water sectors.

In a bid to optimally utilize the nutrients in the liquid manure and make them more available to the plant, Vogelsang cooperated with Danish company BioCover have expanded its product portfolio with the introduction of SyreN. The partnership applies in Germany, Austria, Switzerland, the Benelux states, France, Poland, Czech Republic and Slovakia and the chemical process stabilizes the liquid manure by adding sulphuric acid and reduces nitrogen losses by up to 70%.

The SyreN system uses a sensor to automatically measure the pH value of the liquid manure and adds the necessary quantity of sulphuric acid to lower it and stabilize the liquid manure at the target value. This is because liquid manure contains a high quantity of nitrogen that is dissolved in the liquid manure fluid and appears in the form of ammonia and ammonium.

“SyreN is a closed, reliable system with which farmers and contractors can retrofit their existing technologies, such as dribble bar and trailing shoe systems, and thereby achieve low emissions comparable to those achieved with the slitting technology. At the same time, they benefit from the power and high area coverage of this spreading technique,” commented managing director, Harald Vogelsang.

Both forms of nitrogen are chemically balanced in the liquid manure medium and once the pH value of the liquid manure is lowered, this balance changes. A greater share of the gaseous ammonia is then converted into ammonium (salt), which does not evaporate from the liquid manure. A pH value of 6.0 triggers this chemical reaction and is considered the target value for SyreN.

In order to lower nitrogen losses and emissions, the concentrated sulphuric acid is kept in a front tank and is fed into the liquid manure stream in a mixing chamber directly upstream of the linkage. The mixture of sulphuric acid and liquid manure splits into ammonium and sulphate of sulphur. Both compounds are optimally suited as plant nutrients because the plants can directly absorb them as nitrogen and sulphur fertilisers.