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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ...caused by mites, reporting them as having made their appearance on the lychee in the Hawaiian Islands. He says, ' Specimens of this mite have been submitted for identification to Dr. L. O. Howard, Chief of the Bureau of Entomology, of the Department of Agriculture, who reports that the mite is apparently an undescribed species of Eriophyes the genus responsible for similar diseases of other plants." The first symptoms of the work of these mites is quickly discemable by the wrinkled leaves. On examination the early stages are easily seen as small galls embedded on the under surface of the leaves which increase in size and are covered with a brown velvety hairy growth. Mr. Otto A. Reinking 2 reports, "The most injurious affection on lychee is three different types of leaf galls produced by insects. As a common thing entire branches of leaves are attacked. The symptoms of the usual gall formation is a thickened, wrinkled leaf On the affected portions are formed many abnormal hairs of a brown color with a velvet-like appearance. A second type of gall is evidenced by a somewhat spherical enlargement without the numerous hairs. The third type is a minute gall in the form of a slightly enlarged portion around the insect puncture." Further investigation should reveal whether or not these types of galls are produced by the same or different species of Eriophyes. Mr. Higgins 1 reports three different treatments tried in Hawaii to kill these Eriophyes as follows: 1. Solution of 10 ounces nicotin sulphate and 1 3/4 pounds whale-oil soap in 50 gallons of water. 2. Resublimed flowers of sulphur in powdered form, applied with an ordinary power bellows at the rate of 4 3/4 pounds for a tree 20 feet high and 28 feet in spread. 3. Solution...
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