. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 18 INSECTS AFFECTING VEGETABLE AND TRUCK CROPS. Phldippus coloradensis Thorell, a spider, was found rareh', feed- ing- on the smaller larvae. RECOMMENDATIONS FOR CONTROL. Diirino- 1911 the writer conducted several spraying experiments against the larva^ with Paris green, arsenate of lead, and arsenite of zinc. It was found that the larva? of all sizes were readily killed with arsenicals. In fact this is one of the most easily controlled pests which occur on sugar beets in the Arkansas Valley. Paris green proved m
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 18 INSECTS AFFECTING VEGETABLE AND TRUCK CROPS. Phldippus coloradensis Thorell, a spider, was found rareh', feed- ing- on the smaller larvae. RECOMMENDATIONS FOR CONTROL. Diirino- 1911 the writer conducted several spraying experiments against the larva^ with Paris green, arsenate of lead, and arsenite of zinc. It was found that the larva? of all sizes were readily killed with arsenicals. In fact this is one of the most easily controlled pests which occur on sugar beets in the Arkansas Valley. Paris green proved more quickly effective than other poisons tested, and the following formula is recommended: Paris green pounds 3 Whale-oil soap do G Water 100 This mixture should be applied to sugar beets with a field sprayer (Plate V) at the rate of from 75 to 100 gallons to the acre. It is necessary to wet onh' the surface of the leaves with spray. CONCLUSION. In the Arkansas Valley the striped beet caterpillar is a minor enemy of sugar beets. Ordinarily it is held in check by cultural methods and natural enemies. Occasionally, hoAvever, it develops in injurious numbers, and when this occurs the larva^ can be easily con- trolled by spraying with Paris green. ADDITIONAL COPIES of this pnWication -l\- may be procurod from the Superintend- ent OF Documents, Governnu'iit I'linting Cilice, Washinpton, D. C., at 5 cents per copy. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Entomology. Washington : G. P. O.
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