06/06/2026
🌱 Dairy Farms- Could Your Slurry Be Replacing More Bought-In Fertiliser?
Interesting insight from Alder BioInsights, one of the UK’s most respected independent agricultural and environmental consultancies:
“Digestate is a by-product of anaerobic digestion and is rich in nutrients, especially nitrogen. Research has shown digestate can effectively replace manufactured fertilisers, reducing reliance on imported fertiliser.”
This is an important point that is often overlooked when discussing farm-scale anaerobic digesters.
The nutrients don’t disappear during the AD process. The nitrogen, phosphorus and potassium remain within the digestate, while the slurry simultaneously produces renewable electricity and heat.
For farmers, that means the same slurry can potentially deliver:
⚡ Renewable electricity
🔥 Renewable heat
🌱 Valuable fertiliser nutrients
When combined, it creates a genuinely circular farming system that can reduce purchased energy, reduce reliance on imported fertilisers and make better use of resources already produced on the farm.
Credit to Alder BioInsights for highlighting the growing importance of digestate and nutrient recycling within UK agriculture.