Listen to the coverage on BBC Radio 4 - Farming Today
An inventor in Wales is working out a way to make slurry safe by using an electric charge to separate the liquid from the fertiliser. Slurry - that pungent mix of cow muck, urine and waste water from the milking parlour - needs careful management. If it leaks into rivers the effects can be catastrophic - killing fish and polluting the environment. Gareth Morgan has been working with a college in Carmarthenshire to develop the project.