A Twin-Rotor Broadcaster for the Application of Granulated Insecticides12

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Abstract
Granular formulations of pesticides, due to ease of application, low residue hazard on food crops, and diminished hazard to applicators, are playing an increasingly important role in control programs for various insect pests. An applicator for the sheet distribution of granular materials has been tested, and its performance with various grades of attapulgite granules and granulated insecticides (under various types of field conditions) is described. This equipment has flexibility in that it may be adjusted to provide uniform deposits of the same material over various swath widths or to provide a range of swath widths with materials which vary greatly in particle density. This is accomplished primarily through the fact that delivery of the granules into the rotor blades may be adjusted over a 300-degree arc, making possible the selection of a location of the feed orifice for a given granulated material which will result in a uniform deposit on the ground.

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