. Diseases of economic plants. Plant diseases. Fig. 230. — The nozzles are turned at an angle to the rod so that the spray may be directed upward or downward. After Faurot. rapidly spray even the tallest fruit tree, a special device en- abling the operator to throw the spray to different distances. Spray guns are being used by many commercial growers. Conveyors. — To economize still further in time and labor, conveyors are used in many commercial orchards. These are 400-gallon tanks equipped with low-pressure, high-speed pumps, gasoline engines. The conveyor carries the spray from the mix
. Diseases of economic plants. Plant diseases. Fig. 230. — The nozzles are turned at an angle to the rod so that the spray may be directed upward or downward. After Faurot. rapidly spray even the tallest fruit tree, a special device en- abling the operator to throw the spray to different distances. Spray guns are being used by many commercial growers. Conveyors. — To economize still further in time and labor, conveyors are used in many commercial orchards. These are 400-gallon tanks equipped with low-pressure, high-speed pumps, gasoline engines. The conveyor carries the spray from the mixing plant to the sprayer. Two hun- dred gallons of spray- ing material can be transferred from the tank of the conveyor to that of the sprayer in less than two min- utes. In this way the power sprayer is kept Fig. 231. — Spraying 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 Stevens, Frank Lincoln, 1871- [from old catalog]; Hall, John Galentine, 1870- [from old catalog] joint author. New York, The Macmillan company
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1921
