directly affected by energy prices. Chemicals used for farming are strongly affected by energy prices (particularly petroleum prices). Dow chemical recently announced a roughly, 20% increase in their costs because of petroleum price increases.
A study by the OECD shows that petroleum costs are the biggest contributor to food price increases
http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=115x164765 . The data from this study also showed that demand for corn for ethanol was only a one percentage point of the total demand.
In addition, the modeling included in the report suggests that a 28% drop in world oil prices would cause a 12% reduction in world coarse grain prices ($0.75 per bushel in the case of corn today), underscoring the fact that skyrocketing oil prices are the largest driver behind increasing grain prices.
By contrast, removing biofuel mandates like the Renewable Fuels Standard (RFS) would reduce coarse grain prices by just 1% ($0.06 per bushel of corn). Even abandoning all biofuels policies would only yield an average coarse grain price reduction of 7% ($0.45 per bushel).
Ethanol only uses the starch portion of the corn kernel. The protein is recovered and sold as Dried Distillers Grains and Solubles (DDGS) sold to cattle and hog farmers as a high prtein feed. So actually there is no loss to the food supply due to ethanol except as it competes for acreage against other food crops. In 2007 soy beans did lose acreage to corn. But this year corns acreage went down as farmers planted more wheat and soybeans - because they could get more for those crops.
Yes, crop prices will be going up because fuel costs are going up. Ethanol helps meet some of that demand holding the price of gasoline down (about 15%) which helps keep down the price of just about everything else in the economy affected by fuel prices.
Note however, some of the price increases is the result of speculators trying to make money on the rising prices of commodities. In USA Today, today there is an article pointing out that the
Commodities rush could be over - (at least for this year). We will be going through the same thing next year, I'm sure. But the speculators exacerbate the situation making it worse for everybody else.
Thank you for pointing out how fuel prices so marketedly affect farm costs. I expect we will not increase ethanol production fast enough in the next couple of years to avoid a deep depression caused by climbing petroleum prices. This will slow the adoption of plug-in hybrids even more and put off even further the reduction total gasoline demand they would have provided.