Cow manure can be a fantastic resource for farmers - it's a natural and nutritious fertiliser that helps grass and other crops to thrive. Some simply amass the manure and spread it onto land and others create 'slurry' from manure and water.

Slurry is stored in a lagoon or tank until it is ready to be applied to the land as a fertiliser for plants.

Some dairy farmers spread slurry onto the land; others inject it directly into the soil. Liam Sinclair, Professor of Animal Science, says: "There are many clever ways to put slurry onto land. Farmers use what's called 'dribble bars' to dribble slurry onto the land; others inject the manure just under the soil. This reduces odours and it also means that nitrogen is going directly to where the plant needs it, which can improve crop growth."

Find out about the different ways farmers make use of manure.