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Show 11 Hew Dusting Methods J Tested in Michigan Charging Fungicides Maj Revolutionize Spraying fi4tlng insects and plant dis-which dis-which damage farm crops '""be revolutionized by charging t flnarticles in fungicides and in- . des with electricity, Michigan Schers reported recenUy. ' Laboratory tests by Michigan i ,,1 College researches show reing of dust particles of normal L Zllg compounds gets five to ten tLs better coverage than through usual dusting processes. ! A w Ferrall, head of the MSC -v'J 1 Ik , J ' i t t-i :j Sen -h " iw- 5 " Henry D. Bowen, assistant In j agricultural engineering at MSC, is shown experimenting with ;c t' apples In the electrostatic dust- ing process. I'm , tgricultural engineering depart-lent, depart-lent, says field tests will be made " iis summer to try the new process l smmercially. Fine dust particles of the fungi-r,ts fungi-r,ts ,des and insecticides are charged ith from 12,000 to 20,000 volts as ' ey emerge from the nozzle of a ;gular commercial dusting ma- ; chine. This high charge is held for j several seconds. With dusts blown at a velocity of a mile a minute, W it permits them to travel a great distance before losing the electric . charge. (j Engineers estimate the cost of necessary electrical attachments for the ordinary four-row duster would run around $300. |