In agriculture, as in other sectors, there is no work that an adult cannot do equally well, if not better, than a child," he added.

This is the wrong direction not just for farming, but for the planet.

She invited 30 ministers from all over the world for a conference on agriculture and climate change.

The US is the agricultural superpower.

"To make our agriculture sustainable, we have to do this," he said."Ninety percent of the country is like this, all hills.