. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. Fig. 245.—Knapsack sprayer. Fig. 246.—Bucket force pump. SPRAYING EQUIPMENT Outfits for spraying may be classified as follows: 1. Atomizer sprayer, useful for treating individual plants. 2. Bucket with force pump, convenient for small areas (Fig. 246). 3. Knapsack or compressed air sprayer, operated either by hand or by compressed air, useful in greenhouses, stables, poultry houses, etc. (Fig. 245).. Please note that t
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. Fig. 245.—Knapsack sprayer. Fig. 246.—Bucket force pump. SPRAYING EQUIPMENT Outfits for spraying may be classified as follows: 1. Atomizer sprayer, useful for treating individual plants. 2. Bucket with force pump, convenient for small areas (Fig. 246). 3. Knapsack or compressed air sprayer, operated either by hand or by compressed air, useful in greenhouses, stables, poultry houses, etc. (Fig. 245).. 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 Lochhead, William, 1864-1927. Philadelphia : Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
