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Image from page 61 of “Proceedings of the seventeenth annual meeting of the Association of Economic Entomologists” (1905)
Colorado Mats
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Identifier: prosev00asso
Title: Proceedings of the seventeenth annual meeting of the Association of Economic Entomologists
Year: 1905 (1900s)
Authors: Association of Economic Entomologists.: Meeting
Subjects: Entomology–Societies, etc Entomology.
Publisher: Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology
Contributing Library: University of Florida, George A. Smathers Libraries
Digitizing Sponsor: University of Florida, George A. Smathers Libraries with support from LYRASIS and the Sloan Foundation

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Text Appearing Before Image:
lights in northern Colorado for years,but this year was the first that it has done ex-tensive injury to sugar beets. It did some in-jury in a few limited localities in 1903, but notenough to occasion muchalarm. This year a mid-summer brood, the firstweek in July, did consider-able injury to beets aboutRockyford, and a laterbrood was more destruc-tive about Rockyford,Sugar City, and Lamarfrom the 10th to the 20thof September. The first brood did no perceptible harm in northernColorado, but the September brood caused thousands of dollar- of,i, beet fields about Fort Collins, Greeley, and Sterling. Hun-dreds of acres of beet- during September had all their leaves eatenaway except the midrib- and a little cluster of new leave- at thecenter. Wherever the injuries became severe the larvae maturedrapidly. A farmer might think his beets all right on Monday, andby Wednesday be convinced that the worms would take the entire crop. Poisons were used to good effect upon the beet-, hilt the great-

Text Appearing After Image:
FlG. 4.—Section of radish.showing Injury from mat,.:;! of Anthomyia spfinal I. Fig. 5.—Cross-section ofradish. Bhowing injuryfrom Anthomyia sp. (original. 61 est benefit was derived from great flocks of blackbirds that congre-gated in nearly every infested field and ate the worms. The wormsthat survived burrowed into the dirt and spun silken tubes about :1inches in length, in which they are spending the winter in the larvalcondition. Grasshoppers are always abundant enough in Colorado, but thepast summer much of the State has been comparatively free fromthe introduced species (Melanoplus bivittatus Say. M. differentialisThos.. and J/, femvr-rvbrum DeG.). which are the cause of heaviest£ to farm crops. A native specie. A ibrus simplex Hald. com-monly called Mormon cricket or Idaho cricket. occurred inunprecedented numbers in portions of Routt County. Many of theranchmen became alarmed and inquiries were sent in to the experi-ment station to know what could be done. In past years t

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Colorado Mats
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mat zo at the boulder theater
Colorado Mats
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