Journal of Economic Entomology (1950) 43, 185-188

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J.T. Medler and T.R. Chamberlain (1950)
Low volume sprays for grasshopper control in alfalfa-seed fields
Journal of Economic Entomology 43 (2), 185-188
Abstract: Melanoplus femur-rubrurn is the grasshopper most generally found in alfalfa fields of Wisconsin used for second grade seed production, infestation normally arising from eggs laid in the fields. Experiments showed that effective control was obtained against nymphs with chlordane at 8 and 16 oz, and toxaphene at 12 and 24 oz. per acre. Aldrin (compound 118) and methyoxychlor sprays applied at 10 and 20 gals. per acre also gave good control in experiments. In DDT mixtures dosages of 0.35-0.5 lb. DDT per acre with minimum amounts of 0.1 lb aldrin, 0.4 lb chlordane and 0.6 lb toxaphene per acre gave better results than the same insecticides used alone. The treated alfalfa should not be fed to dairy or beef animals.
(The abstract is excluded from the Creative Commons licence and has been copied from Acridological Abstracts with permission by NRI, Univ. of Greenwich at Medway.)

Research topic(s) for pests/diseases/weeds:
control - general

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Melanoplus femurrubrum Alfalfa/lucerne (Medicago sativa) U.S.A. (mid N)