The USDA predicts cattle prices will rise 20% in 2011 over last year. But, that pales in comparison to the price of corn, which has more than doubled in the past year to nearly $8/bu.

You might think this scenario would tempt plenty of farmers to flip their acres from cattle pasture to cropland. But, it's a tough decision that depends on much more than recent prices.

Some farmers use the term "flex acres" to describe land that can be used either to graze cattle or to grow crops like corn and soybeans.

Ed Morse has some land just like that outside Council Bluffs, IA.

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