Concentrated Mixtures for Aerial Spraying

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The economic possibilities in the use of the autogiro and airplane for controlling the pests and diseases of forest and shade trees and agricultural crops have required the preparation and study of concentrated mixtures that might be used in aerial spraying. Since 1936 the writer has been investigating various aspects of this problem. In the laboratory special attention was given to the compatibility of the mixtures, the ratio of the various ingredients necessary to make the most economical and most effective mixtures, the most suitable method of mixing and the stability of the suspensions. In the field special attention was given to atomization, the degree to which the spray ingredients dried out before reaching the foliage, the effect on different kinds of foliage and the adherence. Methods used and data obtained are omitted from the present paper, which is a summarization and discussion of experience so far gained, with particular reference to composition and characteristics of the various mixtures studied. It is hoped that methods and results on various aspects of the general investigation may be published later.

Document Type: Research Article

Publication date: August 1, 1939

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