Hardest hit were villages further up the valleys, where farmers grow rice, vegetables and corn on terraced plots.

NPR: China Rushes Relief After Sichuan Quake Kills 180

Correspondents say the hill villages, where farmers grow rice, vegetables and corn on terraced plots, were hit the hardest.

BBC: China quake: Rescuers reach remote damaged villages

Correspondents say the hill villages, where farmers grow rice, vegetables and corn on terraced plots, were hit the hardest by the earthquake.

BBC: China quake: Rescue teams blast roads amid aftershocks

In Tanzania rainwater harvesting allows farmers to grow rice or vegetables instead of staples like sorghum and maize.

ECONOMIST: Financing water projects

They impose draconian penalties on suppliers for failing to deliver agreed quantities of fresh fruits and vegetables during the year, which force farmers to grow a much bigger crop than they need as a form of insurance against poor weather and other factors that may reduce their yield.

ECONOMIST: The conflict in Honduras