To quantify price change impacts on profits, returns were calculated for corn and soybeans using yield and non-land costs estimates contained in the 2013 Illinois Crop Budgets for central Illinois farmland (see Handbook on Management page). Returns on both high and low productivity farmland were examined. Generally corn is relatively more profitable than soybeans on higher-productivity farmland because corn-to-soybean yield ratios favor corn more on higher-productivity farmland.

Operator and farmland returns were calculated for five crop combinations: corn after soybean, corn after corn, continuous corn, soybeans after corn and soybeans after two years corn (see Table 2). In the following, most attention will be given to a comparison of corn after corn to soybeans after corn returns, as this will likely be the choice being made this spring.



For high-productivity farmland, Jan. 15 cash bids resulted in a $528/acre corn-after-corn return compared to a $405/acre soybean-after-corn return – a difference of $123/acre in favor of corn. Feb. 28 prices resulted in an $81/acre difference ($471/acre corn-after-corn - $390/acre soybean-after-corn return). April 2 prices resulted in a $46/acre difference ($434/acre corn-after-corn return - $387/acre soybean-after-corn return). Profitability differences between the two crops substantially narrowed from $123/acre on Jan. 15 to $46/acre on April 2.

For low-productivity farmland, Jan. 15 harvest-time bids resulted in a $68/acre difference in corn-after-corn and soybean returns ($68 = $439 corn-after-corn return - $371 soybean-after-corn return). This difference narrowed to $29 using Feb. 28 bids ($29 = $387 corn-after-corn return - $357 soybean-after-corn return). Soybeans were more profitable than corn-after-corn using April 2 prices, with a -$3 difference ($352 corn-after-corn return - $355 soybean-after-corn return). Differences changed from a $123 positive favoring corn on January 15th to a -$3 negative favoring soybeans on April 2.

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