Virginia Tech, Extension Service2019-11-082019-11-081950-08-10http://hdl.handle.net/10919/95399Pumping installations for irrigation studies - Blacksburg, 1950. At left - 7 1/2 HP electric motor on centrifugal pump supplies water to control plot studies. At right - 25 HP Hale gasoline driven pump supplies water to pasture studies.negative, 3.5 x 5 in.image/jpegIn CopyrightApplied ScienceAgricultureVirginia Extension - Project 10Agricultural EngineeringSurface IrrigationIrrigationSoil and Water ConservationPhotographBiological Systems Engineering, Virginia Tech