. Insect pests of farm, garden and orchard . (I. It is an American insect, beingcommon from southern Canada to the Gulf States. The lifehistory, as far as known, is practically identical with that of thelast species. Control.—As the last two species are practically identical inhabits, they may be controlled by the same methods. Wherethe trees are spraj^ed with lime-sulfur wash for the San Jose * Chiomispis fiirfiira Fitch. Family Coccidce. See Quaiutance andSasscer, 596 INSECT PESTS OF FARM, GARDEN AND ORCHARD scale, there will be but little trouble with these scales, and wherespecific tr
. Insect pests of farm, garden and orchard . (I. It is an American insect, beingcommon from southern Canada to the Gulf States. The lifehistory, as far as known, is practically identical with that of thelast species. Control.—As the last two species are practically identical inhabits, they may be controlled by the same methods. Wherethe trees are spraj^ed with lime-sulfur wash for the San Jose * Chiomispis fiirfiira Fitch. Family Coccidce. See Quaiutance andSasscer, 596 INSECT PESTS OF FARM, GARDEN AND ORCHARD scale, there will be but little trouble with these scales, and wherespecific treatment is required for them experiments indicatethat a thorough coating with the lime-sulfur wash while the treesare dormant, preferably in the spring just before the buds open,is one of the most effective remedies. The wash does not seemto kill the eggs, but to kill the young soon after hatching, and hasbeen used successfully on both fruit and shade trees, but if therebe frequent rains in late spring, so that it is washed off, or if the. Fig. 449.—The scurfy scale {Chionaspis furfura Fitch): a, c, females,b, d, males—a, h, natural size, c, d, enlarged. (After Howard, U. Agr.) scales are very thick, it is not always entirely effective. InEngland a 3 per cent caustic soda wash has proven very satisfactoryfor killing the winter eggs. Recent experiments made by ProfessorR. A. Cooley in Montana * show that emulsions of linseed orcottonseed oils are very satisfactory when applied either in thespring or as the eggs are hatching, and were more effective than * R. A. Cooley, Journal of Economic Entomology, III,^p. 57; R. , ibid. IV, p. 202. INSECTS INJITRIOUS TO THE APPLE AND PEAR 597 other insecticides tested. These emulsions are prepared the sameas kerosene emulsion (p. 4S), using one gallon of the oil, andh to 1 pound of soap to 10 or 12 gallons of water. When the eggsarc hatching and the young arc crawling the trees maybe sprayedwith the al)ovc or lo per cen
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