Food price rise could last another two years

You may have to get used to paying more for your groceries for another two years or more.

Experts say an increase in global food consumption combined with increasing use of crops such as corn and soybeans for alternative fuel production are partly to blame.

Agricultural economists who've studied food price fluctuations cite historical trends that show run-ups in farm commodity prices typically happen in five-year cycles.

Prices flare up in the first two to three years of the cycle and then start to moderate by the fourth or fifth year, said Chris Hurt, agricultural economist at Purdue University .