大象传媒

As the world鈥檚 leading soil scientists gather in Glasgow, we hear calls for a total re-think of how we measure soil health. According to the UN鈥檚 Food and Agriculture Organisation, a third of agricultural soil is 鈥渕oderately鈥� to 鈥渉ighly鈥� degraded, threatening global food supplies, increasing carbon emissions and reducing its capacity to hold water. But how do scientists evaluate the health of soil - and is the way they鈥檝e been using the best one?

As the Environment Agency declares July to have been the driest in England on record since 1935, two farmers in Suffolk tell us how their farms are affected. Is planting into dry ground worthwhile, and should they invest in new irrigation systems?

And all this week we are talking about the issues faced by tenant farmers. Today we're in Gloucestershire with pig farmer Helen Wade, who would like to share her tenanted land with a new farmer.

Presented by Caz Graham
Produced in Bristol by Natalie Donovan