Archive image from page 193 of The cultivated evergreens; a handbook. The cultivated evergreens; a handbook of the coniferous and most important broad-leaved evergreens planted for ornament in the United States and Canada cultivatedevergr00bail Year: 1923 ( 128 THE CULTIVATED EVERGREENS keeps the beetles away. Arsenate of leadâone ounce of powder in two gallons of waterâis of considerable value but does not give as good results as the lime- sulfur. Jarring the beetles into a specially constructed insect net is also a practical means of control. The jarring should begin in April or May when th
Archive image from page 193 of The cultivated evergreens; a handbook. The cultivated evergreens; a handbook of the coniferous and most important broad-leaved evergreens planted for ornament in the United States and Canada cultivatedevergr00bail Year: 1923 ( 128 THE CULTIVATED EVERGREENS keeps the beetles away. Arsenate of leadâone ounce of powder in two gallons of waterâis of considerable value but does not give as good results as the lime- sulfur. Jarring the beetles into a specially constructed insect net is also a practical means of control. The jarring should begin in April or May when the beetles first appear and should be repeated at intervals of one week as long as the beetles are to be found. 11. White pine weevil (Pissodes strobi). Pine-leaf scale (Chionaspis pinifoliw, Fitch). Figs. 12, 13. Austrian and other hard pines, when grown for ornamental purposes, are especially subject to attack by the pine-leaf scale. The mature female scale is about one-tenth inch in length, elongate, rounded behind and pointed in front. The color is pure white with a yellowish shield at the pointed end. The male scales are smaller, narrower, and have a ridge along the back. The winter is passed in the egg stage. The eggs are reddish and are closely packed under the old scale of the mother. The eggs begin to hatch in May and the young scale insects crawl out on the new leaves where they settle down, insert their bristle-like mouth-parts and begin feeding. A scale-like covering is soon formed. Hatching con- tinues over a considerable period. In New York there are two broods and possibly a partial third. 12. Chionaspis â pinifolice as shown on the leaves.
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