Popular: Herbst: ANC & Western Cape farmers – an affair set to spark food riots

A maize plant is seen at a field in Hoopstad, a maize-producing district in the Free State province, South Africa, in this January 13, 2016 file photo. South Africa will likely harvest 7.255 million tonnes of maize in 2016, 27 percent less than the 9.95 million tonnes reaped last year because of a scorching drought and late plantings, a government agency said on February 25, 2016. REUTERS/Siphiwe Sibeko/Files

Across the political spectrum, the warnings become ever more urgent. The spectre of food riots is a probability more than a possibility, writes Ed Herbst.