Agriculture Online  Sep 4  Comment 
Byline: Mike McGinnis  DES MOINES, Iowa -- The U.S. corn and soybean crop ratings nearly unchanged from a week ago. CORN On Monday, the USDA Crop Progress Report pegged the U.S. corn crop as 67%...
guardian.co.uk  Aug 31  Comment 
At world’s largest farm show many say US government aid has helped ease their pain – but what they want is trade security It’s been a long, strange summer for America’s corn belt. The weather has been perfect. Farmers are expecting a...
Agriculture Online  Aug 27  Comment 
Byline: Mike McGinnis DES MOINES, Iowa -- The U.S. corn crop is maturing twice as fast as the five-year average. All categories of soybean conditions remain ahead of averages. The trade had expected the...
Agriculture Online  Aug 24  Comment 
Byline: Dan Looker A year with slumping crop prices seems like an odd time to leave money on the table. So far, that’s what’s happening with the $1.51 billion settlement of a nationwide class action lawsuit against...
Agriculture Online  Aug 20  Comment 
Byline: Mike McGinnis DES MOINES, Iowa -- U.S. corn and soybean good/excellent ratings drop from a week ago. The trade had expected the ratings to worsen. CORN On Monday, the USDA Crop Progress Report...
The Hindu Business Line  Aug 20  Comment 
Press Trust of IndiaWith growing incidents of ‘Fall Armyworm’ pest infestation on maize, the Central government has issued an advisory to State govern
Financial Times  Aug 19  Comment 
EPA move to water down standard could reduce demand for corn as producer profits slide
The Hindu Business Line  Aug 15  Comment 
TNAU scientists ask farmers not to panic
Agriculture Online  Aug 14  Comment 
F2F Genetics Network Byline: Gil Gullickson Farmers Business Network (FBN) is getting into the seed business. The farmer-to-farmer network today unveiled its F2F Genetics Network, which the...


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This article is about the commodity in general. For the specific futures contract, see Corn Futures. For grains prices in general, see the article on Grains Prices.

Corn is the most widely produced feed grain in the United States, accounting for more than 90 percent of total production. Around 80 million acres of land are planted with corn. The majority of the crop is used as livestock feed; the remainder is processed into a multitude of food and industrial products including starch, sweeteners such as high fructose corn syrup, corn oil, and ethanol for use as a fuel. As corn prices rise, agricultural companies stand to benefit as their corn or corn seeds command a higher price in the market. Companies who buy corn or derivative products such as high fructose corn syrup can be hit with much larger costs when corn prices rise.

Corn prices - which usually means the price of corn futures - are intimately tied to energy prices, because corn is used to make ethanol, an additive in gasoline. Corn prices peaked in June 2008 with the Iowa floods - at around $7.88 / bushel, then fell in late 2008 and early 2009 as commodity prices - and in particular oil prices - declined, a result of a slowing economy brought on by the 2008 Financial Crisis.

Demand for ethanol may be destroyed by the development of a cheaper biofuel. One alternative recieving both attention and research dollars is cellulosic ethanol, made from plant-based materials like wood and grass. The close to one billion dollars of Obama’s stimulus bills spent on advanced biofuels research will make these alternatives more viable, but will also likely increase demand for ethanol as a whole.[1]

Demand for ethanol is also driven by government regulations requiring a certain percentage of fuel to be made of ethanol. Several large states, like New York and California, have put that percentage at 10%.

Demand for Corn-Based Ethanol

Analysis from the International Food Policy Research estimates that rising demand for ethanol caused 40% of the rise in corn prices from to 2007, and analysis from the CBO estimates that rising demand for ethanol caused 35% of the rise in corn prices in 2008.[2] This is because rising demand for ethanol directly translates into rising demand for corn, at least until alternative biofuels become more price competitive. Demand for ethanol is directly related to the ratio between oil and corn prices – how much ethanol can be sold for (essentially the price of oil) divided by the cost to acquire corn (corn prices). If this ratio is higher than 90%, manufacturers will earn enough money to cover the cost of building an ethanol plant and to use it.[2] However, governments across the world have implemented subsidies that make it profitable to produce ethanol even when that ratio is below 90%.

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The USDA forecasts that most of the increase in corn demand is a result of use in ethanol production.

Oil Prices

The price of oil depends on supply and demand. Factors affecting demand include:

  • Economic growth, especially in underdeveloped economies like China
  • Economic contractions, like the global recession that began in 2008
  • Development of oil-substitutes, like electric cars and ethanol, which is itself driven by high oil prices

Factors affecting supply include:

  • Production cuts, like those made by OPEC to buoy falling oil prices
  • Peak oil, which means that oil production has reached a plateau or is declining
  • Technological developments, which can increase the amount of economically recoverable oil

Government Regulation

Ethanol is an example of a biofuel -- a fuel produced from agricultural products rather than extracted from the ground like oil. Because Ethanol is "grown" as corn rather than pumped out of the ground, it is considered a form of renewable energy. Because ethanol can help conserve gasoline and reduce air pollution, several states, including California and New York, require that gasoline contain 10% ethanol. Legislation is pending in a number of other states. If the number of states requiring ethanol as an additive increases, or if the amount of ethanol that gasoline must contain increases, ethanol demand and therefore corn prices will increase.

Government regulation in the U.S. has further buoyed corn prices. A tariff on imports of Brazilian ethanol, which is made from sugarcane, has increased demand for domestic, corn-based ethanol.[3]

Viability of Alternative Biofuels

Corn based ethanol is the most widely used biofuel because it is the cheapest. There are many contenders wishing to take corn's place, including alternative feedstock like sugar cane and grass, as well as trees and sugar beet. The close to one billion dollars of Obama’s stimulus bills spent on advanced biofuels research will make these alternatives more viable, but will also likely increase demand for ethanol as a whole.[4]

  • Cellulosic ethanol uses enzymes and other processes to produce ethanol from waste plant matter, including grass and wood. One benefit of cellulosic ethanol is that it would allow refineries to produce ethanol with cheaper waste plant matter without diverting corn from the food supply.
  • Algae ethanol uses many of the same processes used to turn cellulose into ethanol. However, it is potentially more scalable. An acre of algae can be used to produce 35x the ethanol as an alternative like soybean.[5]

The Value of The U.S. Dollar (USD) Determines Demand for Exports

The value of the dollar effects the price competitiveness of U.S. exports of corn. The depreciation of the dollar from 2006 to 2007 cause exports to rise 14%, which cause domestic corn prices to increase.[2]

Demand for Animal Feed

Approximately half of corn produced in the U.S. is used for animal feed. As living standards in developing countries increase, demand for meat increases, which increases demand for animal feed, which is made in part of corn.[2]


The weather, in large part, determines the supply of corn. Particularly wet or dry seasons limit production, which in turn causes corn prices to increase. Conversely, when the weather is nice and crop yields are abundant, the price of corn decreases.

The USDA forecasted in mid August that corn production for the 2009-2010 marker year will be 471 million bushels higher than expected a month ago, to 12.8 billion bushels.[6] After adding stockpiles from last year, the market year's total domestic corn supply is expected to rise to the highest level on record - 14.5 billion bushels.[6] This in turn is expected to push down prices to $3.1 to $3.9 a bushel, about 7%-8% lower than the forecast made in July.[6]

Which companies benefit from higher corn prices?

  • Archer Daniels Midland and Bunge (BG) grow corn and as such benefit from rising corn prices as their crops command higher prices on the market.
  • Monsanto and DuPont produce corn seed which is genetically engineered to have properties that make it ideal for ethanol production. They stand to benefit from rising corn prices because farmers will tend to increase the amount of corn which they plant and therefore the amount of cornseed which they buy.
  • UAP Holding (UAPH) distributes fertilizer, insectiside, anti fungal, and other chemicals used in farming of corn. To the extent higher corn prices lead to a boom, especially if a new chemical comes to market which boosts yield, UAPH could benefit. The main hurdle will be canibalization, if farmers cease producing a crop that requires greater use of chemicals and start producing corn which requires relatively few and low levels of chemicals.
  • Potash Corporation of Saskatchewan (POT) and Mosaic Company (MOS) produce fertilizer and benefit from high corn prices as farmers use more crop nutrients to try to increase yield.
  • Deere & Company (DE), as the world's largest tractor manufacturer, benefits from biofuels regardless of which crop (corn, soybeans, other grains) is ultimately used for fuel.

Which companies suffer from higher corn prices?

  • Coca Cola, Pepsi and other makers of non-alcoholic beverages are hit particularly hard by rising corn prices, as high-fructose corn syrup is the principal sweetener in many of the soft drinks these companies produce. These companies' bottlers, such as Coca Cola Enterprises and the Pepsi Bottling Group are also impacted.
  • Heinz and other ketchup makers suffer when corn prices go up because high fructose corn syrup is key ingredient in ketchup. Corn syrup prices have shot up 25% for Heinz, effectively raising their ingredients cost by nearly 5% in quarter ending Aug 1, 2007. Only 2.8% of that increase was passed on to consumers via a price raise.
  • Tyson Foods, Pilgrim's Pride (PPC), Smithfield Foods (SFD) and other livestock companies use corn as animal feed. When corn prices go up, it becomes more expensive for them to raise animals, squeezing their profits.
  • Kellog, General Mills and other cereal companies can be hurt by rising corn prices, however, wheat is a far more common ingredient in cereals and changes in wheat prices are more likely to impact these companies than changes in corn prices.
  • Kraft foods and other snack food companies whose snacks are made from corn or high fructose corn syrup can be hurt by rising corn prices.
  • UAP Holding (UAPH) distributes fertilizer, insecticide, anti fungal, and other chemicals used in farming. The main hurdle will be canabalization, if farmers cease producing a crop that requires greater use of chemicals and instead start producing corn which requires relatively few and low levels of chemicals. This was discussed on the 3rd quarter 2007 conference call.
  • Hormel Foods (HRL), Tyson Foods (TSN), and Sanderson Farms (SAFM) are hurt as corn prices rise. Corn can be a significant input in the production of meat products as it is used for the feed of hogs, chicken, cows, etc.

Corn Futures

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Historical and USDA forecasted Corn prices per bushel
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Where corn is grown in the United States

Corn prices usually refer to corn futures - the price to buy a bushel of corn to be delivered on a specific date in the future. The most commonly tracked corn futures are those on the Chicago Board of Options Trading, or CBOT. The CBOT tracks corn futures contracts by delivery date. IE, the price of corn to be delivered in September of 2008 might differ from the price to be delivery in December of 2008, so there are different corn futures prices to track - one for each delivery date. The CBOT tracks corn futures for only five different delivery dates a year - in March, May, July, September and December (the last is known as "winter corn"). The spot price for corn is what it costs today to buy corn for delivery at the next possible delivery date. .......

News and External Sources

  • The New York Times Reports that a soggy, waterlogged spring in many parts of the world will reduce the volume of corn harvested.
  • A follow up story from The New York Times reporting that corn futures were getting more expensive as a result of flooding in the midwest, as the flooding was reducing the amount of corn farmers were planting.
  • MarketWatch Reports corn prices ended at $4.88 per bushel in Q3 2008, down 30% from the previous quarter.[7] The drop in price represents the largest decline in corn prices since 1996. Both declines in demand for corn as well as a strengthening dollar contributed to the plumment in corn prices during Q3 2008.[7]
  • The Desmoines Register reports that while corn prices have rallied in mid-December of 2008, ethanol prices have held steady due to lower demand for transportation fuels. A survey of farmers showed that corn plantings this year will be down to 82.3 million acres nationwide, compared with 93 million acres last year.

See Also


  1. LATimes - New standards could cut tax breaks for corn-based ethanol
  2. 2.0 2.1 2.2 2.3 CBO - The Impact of Ethanol Use on Food Prices and Greenhouse-Gas Emissions
  3. Ethablog - Brazilian Ethanol Producers Forget They Wouldn’t Be Caught Dead with American Corn Growers
  4. LATimes - New standards could cut tax breaks for corn-based ethanol
  5. Discover Magazine - The Second Coming of Biofuels
  6. 6.0 6.1 6.2 Market Watch - U.S. corn supply to reach record, prices to fall, USDA says
  7. 7.0 7.1 MarketWatch 9/30/2008
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