. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. l82 DESTRUCTIVE INSECTS. spray then, and every member of the first brood that is killed greatly reduces the numbers of the following broods. In badly infested pear-orchards it would pay to drench the bark of the trees in winter with a spray of whale-oil soap, dissolving about one pound in two or three gallons of water, and to each hundred gallons of this add ten gallons of crude petroleum. "With this spray, or with a kerosene-water pump, using 30
. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. l82 DESTRUCTIVE INSECTS. spray then, and every member of the first brood that is killed greatly reduces the numbers of the following broods. In badly infested pear-orchards it would pay to drench the bark of the trees in winter with a spray of whale-oil soap, dissolving about one pound in two or three gallons of water, and to each hundred gallons of this add ten gallons of crude petroleum. "With this spray, or with a kerosene-water pump, using 30 or. Fig. 249.—The Pear Slug. <z, Adult saw-fly; 4, slug with slime removed; ^, same in normal state ; d^ infested leaves, natural size ; a, ^, r, much enlarged. (U. S. Div. of Entomology.) 40 per cent, of kerosene, most of the hibernating psyllas could be killed, and thus the pest be checked for the coming season. The nymphs and many of the adults can be killed in summer by thorough work with a spray of whale-oil soap, one pound in five gallons of water, or with a kerosene-water pump, using about 10 or 15 per cent, of kerosene. Sometimes the nymphs become covered with honey-dew, and it is difficult to hit them with a spray. Hence, just after a hard shower is a good time to make the application, as much of the honey-dew will be washed off. Prompt and thorough work in May or early June on the first brood is necessary if one is to control this pest. It is a very difficult matter to check it if it is let alone until later in the season. The Pear or Cherry Slug {Eriocampoides limacina).—This. 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 Thomas, J. J. (John Jacob); Wood, William H. S. New York, Orange Judd
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfruitculture, bookyea
