. Biennial report of the Oregon State Board of Horticulture ... Horticulture -- Oregon; Fruit-culture -- Oregon; Gardening -- Oregon. APPENDIX. 351 attraction, permeates the entire burrow where it comes in contact with the Jarva, which soon succumbs. The amount of kerosene which it is necessary to use is so small that it does not endanger the health of the tree. Clean cultural methods—Finally, clean culture, the best preventive for insect injui'y of whatever kind, should not be neglected. The nursery should not be started in new localities, where crabs, thorns, June-ben^y, and other wild food
. Biennial report of the Oregon State Board of Horticulture ... Horticulture -- Oregon; Fruit-culture -- Oregon; Gardening -- Oregon. APPENDIX. 351 attraction, permeates the entire burrow where it comes in contact with the Jarva, which soon succumbs. The amount of kerosene which it is necessary to use is so small that it does not endanger the health of the tree. Clean cultural methods—Finally, clean culture, the best preventive for insect injui'y of whatever kind, should not be neglected. The nursery should not be started in new localities, where crabs, thorns, June-ben^y, and other wild food plants of this species grow in great profusion, nor in the vicinity of neglected orchards, nor should rank growths of weeds, grasses, bushes, and briars be permitted to accu7nulate about the truulcs of the trees. When a tree is seen to be injured beyond recovery it should be taiven out and destroyed by burning before the following spring, that the larvae which it contains may not have an opportunity to develop and reinfest healthy growth. THE SPOTTKl) APPLE-TKEE BORER. (Saperda cretata Newm.). A very similar insect to the preceding, both in appearance and in habits, is the spotted apple-tree borer [Saperda cretata Newm.). The adult beetle is of nearly the same size and form as the round-headed borer, differing s uperficially by having two white spots on each elytron instead of the lon- gitudinal white lines which distinguish the latter. (See Fig. 2.) The larva and pupa are so similar that no description need be made of them. Although the species has a fairly wide distribution, corresponding somewhat closely to that of the common species, specific injury by it has only been noted in two states, in Michigan by Prof. A. J. Cook, and in Iowa by Prof. H. Osborn. In the former state this borer is reported as quite as common and destructive as Saperda Candida. Its occurrence is also recorded in ("anada. New York, Pennsylvania, New Jersey, and Ohio, and there are specimens in th
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