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More corn in 2007?          Send a link to a friend

[AUG. 24, 2006]  URBANA -- Some Illinois farmers may find switching to more corn profitable in 2007, according to a recent University of Illinois Extension study.

"Given a $6-per-bushel soybean price and soybean yields above 45 bushels per acre, break-even corn prices range from slightly above $3 for relatively low corn yields to about $2.50 for relatively high corn yields," said Gary Schnitkey, U of I Extension farm financial management specialist who co-authored the study with Darrel Good, U of I Extension marketing specialist.

"Current 2007 price projections are in the $2.70-to-$2.80-per-bushel range for corn. Hence, some farmers may find switching to more corn profitable for the 2007 production year."

Schnitkey and Good examined a number of factors affecting the corn and soybean markets in the coming production year and calculation of a break-even corn price. Data used in the report came from local Illinois Farm Business Farm Management associations across the state.

"Recent and planned construction of ethanol plants suggests the need for substantially more corn to meet the needs of those plants, livestock producers, other manufacturers and foreign buyers," said Schnitkey. "For corn production to increase, farmers must plant more corn at the expense of other crops. In much of the Midwest, the trade-off will come down to a choice between corn and soybeans.

"As a result, the profitability of corn must exceed that of soybeans to entice farmers to plant more corn. This enticement generally comes in the form of higher corn prices relative to soybean prices."

Schnitkey and Good calculated corn prices that make corn production more profitable than soybean production.

Many Midwestern farmers traditionally plant a 50-50 corn-soybean rotation in which corn is planted one year and soybeans the following year. For these farmers, planting more corn requires planting additional corn acres on farmland that was planted in corn the previous year. Hence, the additional corn decision often comes down to a comparison of corn-after-corn returns to soybean returns.

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In their paper, "Corn and Soybean Prices for More Corn in 2007," Schnitkey and Good review the formulas they used to prepare the price projections. That report is available online at

Schnitkey noted a few qualifying points to the report's conclusion.

"Break-even corn prices will vary as the cost changes," he said. "Each $5 increase in the cost difference causes the break-even prices to increase by 2 to 3 cents per bushel. Break-even corn prices are based on an expected corn yield that should -- in most cases -- reflect corn-after-corn production.

"Agronomic research indicates that corn-after-corn yields are 10 percent below that of corn-after-soybean production. Many farmers do not believe that corn-after-corn has a yield drag. Consideration should be given to yields used in calculating break-even corn prices. Lower expected corn yields will increase break-even corn prices."

Schnitkey also noted that corn production traditionally has been more risky than soybeans.

"Yields from corn-after-corn production are more variable than yields from corn-after-soybean production," he said. "Switching to more corn increases revenue risks. Calculation of break-even prices does not consider risks."

[University of Illinois Extension news release]

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