MADISON, Wis. (AP) -- Apple production in Wisconsin has dropped to its lowest level since 1945.

The National Agricultural Statistics Service says apple production in 2012 was down 54 percent in Wisconsin. Yields decreased more than three tons per acre.

A heat wave last spring caused apple trees to bloom prematurely. And then frost in April killed many of the blossoms. A summer drought only made things worse.

Wisconsin Apple Growers Association director Ann Maenner says they're hoping this year will be different and that the trees will stay dormant until the frost is gone.

The State Journal says apple production dropped 4 percent nationally.