Let me use Darfur as an example. In south Darfur right now, they are only cultivating about a third of the arable land that they could be cultivating.

VOA: standard.2009.10.14

It is a mixed farm, with arable crops and a 40-strong herd of beef cattle.

BBC: The farmer's tale

"On a per capita basis, China has half the arable land and a third to a quarter of the water than the global average, " says Merritt Cluff of the Food and Agriculture Organization in Rome.

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In Bedfordshire, a former arable farm in the open countryside received permission for a nursery and bulb sheds.

BBC: NEWS | UK | Diversity 'threat to countryside'