In order to ensure that the fertilisation practice is sustainable, we use as many regional nutrients as possible, instead of chemical fertiliser. Together with manure processors, water and sewage sludge processing companies we compose the nutrients into valuable fertilisers. The quality and use of these fertilisers will be extensively tested by using various demos and field trials that provide scientific support.
In 2018, 10 farmers in the Achterhoek tested the fertilizers on their land. In the following years this number has increased. The effect of the fertilisers on crop growth and soil and water quality is examined by Wageningen University.