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Description: The problem of stones entering com bines is well known by those farming in stoney areas where crops are wind rowed. Considerable damage can occur to the combine, and in addition the grain is contaminated. From data sup plied by the Board of Grain Commissioners for Canada (2) stones present in wheat when delivered to the lakehead resulted in one car out of 825 cars being graded rejected (3) on ac count stones during the crops years 1960-61 and 1961-62. For the same years one car in 145 cars of barley was graded rejected and one car in 915 cars of oats was graded rejected. Fewer numbers of cars of all grains were rejected during crop years 1962-65. In all years a considerably higher percentage of cars of barley was rejected on account of stones than for the other grains. Some data, of a comparative nature, in regard to pickups and stones has been published in the form of test re ports on individual pickups by the Agricultural Machinery Administration. These data are brought together to evaluate the effect of some pickup characteristics on their performance with regard to stones. Other pickup characteristics which probably affect the picking up of stones and the possibility of evaluating their effect through the use of the test procedure are discussed.
Keywords: stones and combine pickups
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Citation: Reed, W. B. and F. W. Bigsby 1967. STONES AND COMBINE PICKUPS. Canadian Agricultural Engineering 9(1):25-27.
Volume: 9
Issue: 1
Pages 25 - 27
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Date: 1967
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Coverage: Canada
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