A corn planting frenzy is leaving some upper Midwest farmers without access to the high end corn varieties this spring. More farmers are planting corn this year due to higher prices. After the flooding followed by drought last summer reduced yields, supplies of biotech corn were particularly tight before many farmers decided they wanted to plant corn.

“It’s short, particularly Bt (biotech) corn,” Neal Foster, executive director of the South Dakota Crop Improvement Association, told AgWeek.

This year’s corn crop is expected to be one of the largest crops in decades. Statistics from the U.S. Department of Agriculture pegs the 2012 crop will come in at 96 million acres, which is an increase of 4 percent from last year.

In Minnesota and the Dakotas alone, corn acreage is forecast to increase 14 percent.