The German fertiliser ordinance faces pig farmers in some processing regions of Germany with major challenges. The farmers surveyed see a central measure for the reduction of nutrient surpluses in determining the nutrients in liquid manure and in spreading nutrients more specifically. This is the most important lever for over 70 percent of the surveyed pig farmers. There are already near-infrared spectroscopy methods for use in practice which enable the real-time determination of the ingredients of liquid manure during spreading. The data collected can be used to coordinate the flow rate and the tractor speed with each other. As this technology is relatively expensive, most farmers make use of it through contractors.
Among other things, the fertiliser ordinance specifies that, beginning on 1 February 2020, liquid organic an liquid organic-mineral fertilisers must be laid on the ground in strips or injected directly into the ground. This is an important reason why farmers, who spread their liquid manure themselves, see an option in purchasing new spreading technology for spreading close to the ground. 40 percent of those surveyed are in favour of this.
For 30 percent of those surveyed, an interesting alternative is to enter into cooperation with arable farmers so that they can utilise this excess liquid manure. However, many of the arable farmers that utilise it insist on knowing the ingredients of the liquid manure in order to use it specifically to supply their crops with nutrients.