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It's a fact of farming life: where there are livestock there will be manure. But are farmers valuing it properly? Fertiliser is only the beginning. Charlotte Smith explores the many uses of muck on a visit to a Wiltshire dairy farm which is generating electricity from slurry. She learns about a phone app which is designed to help farmers spread dung more efficiently. Plus, Caz Graham visits a project investigating whether slurry can be recycled safely to provide a new bedding material for cows.

Presented by Charlotte Smith and produced by Sarah Swadling.