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A Study Of The Spotted Alfalfa Aphid And The Potato Leafhopper And Their Abundance In Relation To Certain Climatic Condition In Five Specific Areas In South Dakota, Mitchell J. Wrich
A Study Of The Spotted Alfalfa Aphid And The Potato Leafhopper And Their Abundance In Relation To Certain Climatic Condition In Five Specific Areas In South Dakota, Mitchell J. Wrich
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The purpose of the portion of this paper pertaining to the spotted alfalfa aphid is to present the results of an ecological study dealing with the distribution and seasonal abundance of the insect. This study was established in four specific areas of four southeastern counties of South Dakota. Observations included the varying weather conditions and their effect on the aphid. Potato leafhoppers were also investigated. Actual proof of the potato leafhopper migratory theory was not forthcoming until 1951 when entomologists of the North Central States, with the aid of entomologists in certain Southern States, voluntarily collected the needed data in …