. Insect pests of farm, garden and orchard . Fig. 27.—a, a cheap type of bucket pump with no uir-chamber, whichwill not maintain satisfactory pressure; b, a better type of bucketpump with small air-chamber. (Courtesy Deming Co.) Knapsack Pumps.—The kiiapsack pump consists of a copperor galvanized-iron tank carried on the back like a knapsack, inwhich is mounted a bucket pump with a lever handle for the better makes this handle is detachable, and a plain handlemay be attached so that the tank may be used as a simple bucketpump, for which a footrest is attached to the tank. The pumpsh
. Insect pests of farm, garden and orchard . Fig. 27.—a, a cheap type of bucket pump with no uir-chamber, whichwill not maintain satisfactory pressure; b, a better type of bucketpump with small air-chamber. (Courtesy Deming Co.) Knapsack Pumps.—The kiiapsack pump consists of a copperor galvanized-iron tank carried on the back like a knapsack, inwhich is mounted a bucket pump with a lever handle for the better makes this handle is detachable, and a plain handlemay be attached so that the tank may be used as a simple bucketpump, for which a footrest is attached to the tank. The pumpshould have a good mechanical agitator. The copper tanksare preferable, for Bordeaux mixture will soon eat through gal-vanized iron. Knapsack pumps are useful for spraying such 62 INSECT PESTS OF FARM, GARDEN AND ORCHARD crops as tomatoes, melons, etc., which cover the ground, so that it is difficult to drive through them without injuring the vines, crops growing on steep hillsides, or for a small acreage of any garden crops, small fruits
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
