DES MOINES, Iowa (AP) - More than 150 scientists in Iowa have signed on to a report that says extreme weather patterns caused by climate change are affecting farming in the state and updated practices designed to prevent soil erosion are needed to adjust to the new reality.

This year and last year Iowa saw heavy spring rain which this year may have prevented 900,000 acres of Iowa farmland from being planted. The heavy rain before crops are in the ground also contributes to significant soil erosion. The drought that followed last year significantly cut corn and soybean production.

Researchers and professors from 36 Iowa colleges and universities say in their 2013 climate report released Friday that erosion prevention measures installed 30 years ago need to be updated to handle new weather patterns.