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Agronomy Journal Abstract -

Portable Self-Propelled Field Plot Forage Chopper for Agronomic Research1


This article in AJ

  1. Vol. 66 No. 4, p. 594-596
    Received: Dec 21, 1973

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  1. Albert S. Hunter,
  2. Lynn D. Hoffman,
  3. Gary W. Allshouse and
  4. William L. Kjelgaard2



A commercially available farm forage harvester was converted to a self-powered and readily portable forage chopper for experimental plots of either row crops or hay. The original harvester was towed and powered by farm tractors. In conversion, the original axle was shortened and moved, a chassis frame was constructed, and the front axle and wheels of a 4-wheel drive automotive vehicle were mounted under the rear of the chassis for propulsion and steering. An engine was mounted on the chassis for mechanical transmission of power to the header, cutter head, and blower and for hydraulic transmission of power to propulsion wheels and header lift. A working platform and control center for the driver was built directly above the cutter head. A rear platform was constructed for the bagging, sampling, transport, and weighing of harvested forage. No modification of essential features of row-crop head or cutter-bar (grass) head was required and their ready inter-changeability was maintained. Outside-to-outside distance for the tires is about 112 cm (48 in); if row spacing is of the order of 75 cm (30 in), one row may be harvested without disturbing the others. The cutter bar unit harvests a swath of 137 cm (54 in).

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