In its new report Crop Prospect and Food Situation the UN agency says prices are exceeding levels seen a year ago in some countries, “creating hardship for millions of people”.

For instance, in sub-Saharan Africa 80 to 90 percent of all cereal prices in 27 countries are over 25 per cent higher than two years ago. In 31 Asian and Latin American countries between 40 and 80 per cent are over 25 per cent more expensive than in 2007.

Among the reasons cited are reduced harvests, higher or delayed imports, civil conflict, strong demand in neighbouring countries and regional trade flows, devaluation of national currencies, changes in food and trade policies, increased incomes and demand, and transport constraints and higher transport costs .