He says with price spikes already a problem, and an extra two billion people expected by 2050, there are no easy answers.
But he says in the long term, extra food won't be coming from countries that are already the world's top producers, like in Europe or North America, but from places where land has yet to be fully exploited.
"A lot of the future potential lies in the developing countries, particularly in Africa and Latin America," Hazell said. "These are countries where a lot of poor people are engaged in farming so here is an opportunity to grow more food to feed the world and have some of the poorest people engaged in that process solving their own income and employment problems in the process. So that is the real win/win opportunity."
But in the short term, farmers in Europe and around the world are working to get the greatest yield out of the land they have.
Robert Raven sold much of this year's wheat months ago. But with prices now high he will be making a good profit on the extra grain and expects his profits to top recent years'.
European farmers, he says, are doing their best to make sure people around the world can eat.
"We will be exporting as much as we can to try to help fill the shortfall left by the U.S. and Russia," Raven said. "Obviously when the world can only produce as much grain as it does we cannot completely fill the gap but Europe is certainly emptying the barns as much as possible."
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2013-11-27
2013-11-27
2013-11-27
2013-11-27
2013-11-27
2013-11-27