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Auto Pilot for Tractors Aims at Precise Weed Control
USDA engineer Louis A Liljedahl at the University of Minnesota develops an automatic pilot for farm tractors to guide row crops with light sensing feelers and hydraulic steering. The system aims to cut crop damage and improve cultivation efficiency in weed control. The device uses macroswitches to align front wheels and returns them to the correct position automatically. The effort seeks a low cost profit friendly solution for farmers. A separate SPARC progeny sale in Willow Street grossed 28 135 dollars with an average of 612 dollars per head and top price 1 625 dollars for a Lucifer heifer. Nine teen animals sold to seven states. USDA researchers also report two fungi cides will control Black Spot roses in tests involving DDT and other agents.