Bismarck Tribune 50

“The V-ditcher, supplied by the state water commission to every farmer launching an irrigation project. A plow is run both ways on the line of the ditch, throwing the dirt out, and the ditcher then is run up and down the ditch several times to increase its size and shape it. This creates a ditch in which one half the water is above the level of the field to be watered and the other half is below. This makes it easy to turn the water into the field”.
pulitzer source: 
Bismarck Tribune, July 10, 1937; p. 7