Show airplane dusting dustine A ground duster traveling five miles on an hour applying 20 pounds of dust to the acre in a swath 28 feet wide covers acres a minute and so a must distribute dl tribute pounds of dust a minute minute if the air plane travels 60 miles an hour covers a swath of 33 35 feet and 20 pounds of dust an acre its equipment must treat acres nerem a minute with pounds of dusl dust speeding up to 85 miles an hour it must feed and disperse 1202 pounds ol 01 0 dust over acres in a minute or the dust must be handled ot at two pounds every second 2146 times as fast as in the ground machine |