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Laboratory evaluations of emulsifiable and encapsulated formulations of malathion and fenitrothion on soft red winter wheat against attack by adults of 4 species of stored product insects



Laboratory evaluations of emulsifiable and encapsulated formulations of malathion and fenitrothion on soft red winter wheat against attack by adults of 4 species of stored product insects



Journal of Economic Entomology 70(4): 480-482



Emulsifiable and encapsulated formulations of malathion and fenitrothion were applied to soft red winter wheat at doses of 2.5, 5.0, 7.5 and 10 ppm AI [active ingredient]. The wheat then was stored 12 mo. to determine relative effectiveness of residues against adult rice weevils, Sitophilus oryzae (L.), lesser grain borers, Rhyzopertha dominica (F.), red flour beetles, Tribolium castaneum (Herbst), and confused flour beetles, T. confusum Jacquelin duVal. Fenitrothion was more effective than malathion against all species. No significant differences in relative effectiveness were found between the encapsulated and emulsifiable formulations. Residues were determined by GLC analysis. There were no significant differences in the amounts of residue deposited on the wheat by the encapsulated and emulsifiable applications.

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Laboratory Evaluations of Emulsifiable and Encapsulated Formulations of Malathion and Fenitrothion on Soft Red Winter Wheat Against Attack by Adults of Four Species of Stored-Product Insects. Journal of Economic Entomology 70(4): 480-482, 1977

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