Dusting plane hedge-hopping after spraying swath on beanfield. These planes can spray 100 acres an hour, can usually fly one or two hours unless it rains or storms in an average day. The usual traveling dusting circus has at least three or four planes, its own pilots, mechanics and elementary repair shop. Seabrook Farms, between Bridgetown and Vineland, New Jersey. Date 1938. Dusting plane hedge-hopping after spraying swath on beanfield. These planes can spray 100 acres an hour, can usually fly one or two hours unless it rains or storms in an average day. The usual traveling dusting circus has at least three or four planes, its own pilots, mechanics and elementary repair shop. Seabrook Farms, between Bridgetown and Vineland, New Jersey. Date 1938.