Published online by Cambridge University Press: 12 June 2017
Field studies have been conducted at the Irrigation Experiment Station, Prosser, Washington, to determine the effects of 2,4–dichlorophenoxyacetic acid (2,4–D) in irrigation water on certain crop plants. The possibilities of contaminating irrigation water through the use of 2,4–D for weed control, particularly on ditchbanks, prompted these investigations. The response of Red Mexican beans and sugar beets to 2,4–D in irrgation water has been reported (1, 2). This publication deals with Concord grapes, a woody-type of crop plant.