Ugandan coffee farmers are deploying modern technology like drip irrigation and artificial mulching to beat the effects of climate change, which is making production of the crop increasingly tougher in Africa's top exporter of the bean. “I don’t know what next year brings, I don't know when the next rains will be, but if you have water and mitigate this as much as possible, then the crops will not suffer,” said Allan Green, a Ugandan coffee farmer.