Spraying

a method of protecting vegetables and fruit trees against injurious insects. A number of liquid sprays are recommended. Some of the best known are: Paris green, 1 pound, water, 250 gallons; blue vitriol, 1 pound, quicksilver, 1 pound, water 12 gallons; white hellebore, 1 pound, water, 50 gallons; kerosene, 2 gallons, water, 1 gallon, hard soap, 1/2 pound. Various methods of application have been employed. A long whisk broom, a knapsack fire extinguisher, a pail force-pump, a garden barrel-pump, a two-horse field tank with a pump driven by cog wheels, and finally, in large orchards where thousands of dollars' worth of fruit are dependent on the extermination of insects, a huge tank with a steam pump may be found in use. In all these cases the operator is able to direct the spray through a nozzle as in sprinkling lawns. Insects wage perpetual warfare with fruit raising, but American ingenuity is equal to the emergency. See Scale; Insect