Lubricating Oil Sprays For Use On Dormant Fruit Trees

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Because of the prevalence of the obscure scale in Louisiana pecan orchards, the increasing demands for recommendations for its control, and the wide variation in the control measures that have been recommended, a study of its biology and control was made from 1929-1932 inclusive, at the pecan insect laboratory of the United States Bureau of Entomology at Shreveport, La. The results of these investigations are reported briefly in this circular.