. Circular. Insect pests; Insect pests. METHODS OF CONTROLLING TOBACCO INSECTS. 15 upon the cured tobacco to injure the user. This fear is groundless. Prof. H. Garman,° state entomologist of Kentucky, reports the results of several experiments to determine the amount of arsenic left upon treated tobacco. Paris green was used at the rate of 1 pound to 160 gallons of water. The experimental row that received the greatest amount of Paris green received 8 sprayings with a total. Fig. 11.—Applying Paris green to tobacco with a knapsack spray pump. (Original.) of 4J pounds to the acre. The last spra
. Circular. Insect pests; Insect pests. METHODS OF CONTROLLING TOBACCO INSECTS. 15 upon the cured tobacco to injure the user. This fear is groundless. Prof. H. Garman,° state entomologist of Kentucky, reports the results of several experiments to determine the amount of arsenic left upon treated tobacco. Paris green was used at the rate of 1 pound to 160 gallons of water. The experimental row that received the greatest amount of Paris green received 8 sprayings with a total. Fig. 11.—Applying Paris green to tobacco with a knapsack spray pump. (Original.) of 4J pounds to the acre. The last spraying was made August 22, and the tobacco was cut September 4. Analysis of this tobacco showed grain arsenious oxide to the pound. In the several experiments performed by Professor Garman only one experiment gave more than one grain of arsenious oxide to the pound of dried tobacco, and the tobacco in this experiment was sprayed the day it « Bui. 63, Ky. Agr. Exp. Sta., pp. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Entomology. Washington, D. C. : The Bureau
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