Insect pests of farm, garden and orchard . arsenical either wet or dry wouldbe effective. Professor C. P. Gillettef has observed that the beetlesaccumulate on the mother beets early in the spring, so thatif a few beets were left in the ground over winter they mightserve as trap plants for the piotection of the younger plants in ?Quoted from F. H. Chittenden. Hulk-tin 4:i, Bureau Ent., U. S. DepfAgr., p. 10. tC. P. Gillette, 24th Report Colo. Agr. Kxp. Sta. (1902). pp. lOSlll. INSECTS INJURIOUS TO BEETS AND SPINACH 339 spring. As injury is mosth^ on or near alkali ground, such soilshould be avo
Insect pests of farm, garden and orchard . arsenical either wet or dry wouldbe effective. Professor C. P. Gillettef has observed that the beetlesaccumulate on the mother beets early in the spring, so thatif a few beets were left in the ground over winter they mightserve as trap plants for the piotection of the younger plants in ?Quoted from F. H. Chittenden. Hulk-tin 4:i, Bureau Ent., U. S. DepfAgr., p. 10. tC. P. Gillette, 24th Report Colo. Agr. Kxp. Sta. (1902). pp. lOSlll. INSECTS INJURIOUS TO BEETS AND SPINACH 339 spring. As injury is mosth^ on or near alkali ground, such soilshould be avoided. Plant-bugs The Tarnished Plant-bug {Lygus pratensis—see page lOl),False Chinch-bug (A\ (iiigustatus), and several of the com-mon plant-bugs often become so numerous as to do considerabledamage to beets. When present in large numbers, a spray ofkerosene emulsion might l)e used to advantage. Experimentsin New York show that the tainished plant-bug can be drivenfrom a field by dusting the rows with wood-ashes, being careful. Fig. 243-—The false cliinch-l)\is (.Vy/.s-n/s angustatus). (After Riley.) to work on the same side of each row and thus gi-adually drivingthem into the field adjoining. The Beet Leafhopper * Very serious loss to the sugai-beet industry has occurred inColorado and Utah from a condition known as curly leaf or blight. Investigations made by Professor E. D. Ball haveshown that the curly leaf is undoul)tedly caused l)y the presenceof immense numbers of small leafhoppers, from 10 to 100 oftenbeing found on a plant in ])adly infested fields. The curly leafcondition does not seem to result, however, except when tiie soilhas become dry and heated, and where plants are shade<l or * Eutettlx tenella Baker. See E. D. Ball, Bulletin 66, Part IV, Bureaur Entotiiology, U. S. Dept. Agr. 340 INSECT PESTS OF FARM, GARDEN AND ORCHARD irrigated the damage by the leafhoppers does not seem to producetlie same tioiiMc Siiuihir injury has been noted in parts ofOre
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