Kowalski, RobertWeber, C.2021-02-252021-02-251967-08-01https://dr.lib.iastate.edu/handle/20.500.12876/95656<p>New varieties take years to develop - but a series of new varieties for the entire state would produce an additional $66 million of farm income if all farmers would make use of them.</p>articleisulib-bepress-aws-west286321813559farmscience/vol22/iss2/5Agriculture