Wheat declined on Tuesday amid concerns that an increase of the dollar will drive farmers to plant more grain in an effort to benefit from high wheat prices.
Wheat futures for May delivery dropped by 0.7 percent or 6.75 cents to $9.2225 a bushel on the Chicago Board of Trade.
Wheat posted high gains on Feb. 27 when it recorded $13.495 on speculation that global stockpiles will fall.
The dollar has increased by 1.3 percent against other six major currencies, and a stronger dollar reduces the buying power of importers using other currencies.
U.S. farmers were forecasted to increase wheat planting by 5.6 percent after the price more than doubled last year.
The U.S. Department of Agriculture (USDA) said farmers were expected to sow 7.8 percent more spring wheat when planting starts in April and May.
Wheat was the fourth-biggest U.S. crop in 2007 valued at $13.7 billion.