Catron, DamonWallace, J.2021-02-252021-02-251949-08-01https://dr.lib.iastate.edu/handle/20.500.12876/95783<p>You read of our first tests with APF several months ago. The tests were made under experimental conditions. And APF showed great promise.</p>articleisulib-bepress-aws-west143319996322farmscience/vol4/iss2/2Agriculture