Note on a Laboratory Method for Appluing Low Volume Spray Patterns of Variable Form and Density

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Date
1968
Authors
Johstone, D. R.
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I C I P E
Abstract
The introduction of low and ultra-low volume spraying techniques in the control pests of cottent, has shown the need for a laboratory method of measuring i.e biological activity of insecticide deposits of this nature. The ultra-low volume technique, in contrast to convetional ones, results in a comparatively low density of spraydroplets, with a high insecticide, well seperated from each other. Its is anticipated that such deposits possible derived from highly concentrated oil solution, may behave defferently in their toxicity to lepidoterous larvae when compares with a more complete cover left by convetntional high volume spraying.This report is concerned with the development of a technique to apply deposit patterns of variable density in the laboratory.
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