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Farm Operation Tests __________________________________________________________________________ __
Tire Inﬂation Pressure Tests ________________________________________________________________ __
Weight Transfer and Travel Reduction __
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16 pounds acre and covered alfalfa cent more land corn curves Deere General Purpose drawbar horsepower drawbar loads drawbar tests driven in high effective tire engine horsepower equipped with pneumatic equipped with rubber equipped with steel Farmall tractors ﬁeld conditions ﬁrst fuel consumption fuel per acre high gear increased drawbar pull intake manifold intermediate gear John Deere G.P. land per hour low gear manifold vacuum manometer Model U tractor Mowing P'UNDS plotted pneumatic tires power mowers Purpose tractors rear wheels rubber tires rubber-tired tractor secured signiﬁcant slippage soil spade lugs steel-wheeled tractor stubble ﬁeld sweeps three-bottom plow tire inﬂation pressure TIRES AND STEEL traction tractor equipped tractor testing course tractor was driven tractor wheels tractor when compared tractor when equipped travel reduction traveled in high types of wheel weight transfer wheels and lugs wheels and spade WHEELS FOR TRACTORS Yes John Deere