Goals of the project:

• Assessment of ammonia emissions from different liquid manure distribution technologies under Austrian economic conditions
• Estimation of the emissions reduction potential for Austria
• Derivation of practical recommendations for the implementation of the various application techniques on farms (nitrogen efficiency, feed contamination)
• Better assessment of manure spreading techniques that are less technically and investment-intensive in terms of their emission potential

In a precisely coordinated test grid, the emission behavior of the slurry applied to the area is measured using a field-suitable open dynamic chamber method (0.5 m² surface). The following growth is assessed with regard to the degree of contamination.

The important parameters such as relative humidity, air temperature, surface temperature, precipitation and soil moisture are recorded at each measuring point. In addition, leading and trailing weather parameters from the measuring station in Gumpenstein are used to interpret the data.

The research results allow an emissions assessment of the various liquid manure spreading systems used in Austria. With this knowledge, the specifications from the NEC guideline in combination with the results from the TIHALO II study can be implemented in a targeted manner for the fertilizer application sector. This project can also provide useful background information as part of the climate protection discussion.