The area of maize grown in the UK has roughly trebled since the 1990s. Is that a good or bad thing? Fans of maize say it's a cheap crop to grow, needing little fertiliser and producing high quality livestock feed. But others see it as an environmental menace, which often leads to soil compaction and run off. So can things be done differently to reduce the negative impacts of maize while still benefitting from the positives? Produced and presented for BBC Audio in Bristol by Sarah Swadling