As of March 1 2023, fertilizer rules for farmers have been tightened very quickly. Farmers have to create a fertilizer-free buffer zone at the shore of their ditches. The rule should prevent the runoff of fertilizer into the water, but what are the consequences of this new rule for the local biodiversity? A major new research about this has started. VU-professor Matty Berg talks about this at Vroege Vogels. Click here for the interview and for more information (the website is in Dutch).