High gas, diesel prices hurt Calif. farmers, but economists say higher US food prices unlikely - The Washington Post:
"When it comes to rising fuel costs, farmers get hit with a double whammy: They’re spending more to refuel farm equipment such as harvesters and tractors, and they’re having to pay fuel surcharges to people mechanically harvesting or transporting their produce. Yet they are loath to impose surcharges on anyone, because they’re afraid of being less competitive when they sell their products."
U.S. Energy Information Adminstration gas and diesel prices