Ground boom application, exposure

The data for ground boom applicators and mixer-loaders were manipulated in various ways in attempts to determine whether useful predictive correlations of exposure with use parameters can be found. Some apparently strong, statistically valid correlations were found. However, even though certain c rrelations were signif-... 

Spray nozzles designed for both aircraft and ground equipment can also be used to enlarge droplet size of the spray. Application equipment can also be modified to reduce drift. For example, shrouding the spray booms of ground equipment keeps droplets from swirling up into the air, thus reducing the potential for drift and applicator exposure. 

Estimates of Field Worker Exposure to Pesticides An example will be presented to show how estimates of lifetime field worker exposure can be made and show how a number of the factors above come into play during such calculations. These calculations apply only to chemicals which demonstrate chronic toxicity predominantly. Shorter term estimates must be made for chemicals showing acute toxicity. For this exercise consider only field crops such as wheat, corn, and soybeans. The example presented here will deal with one application type, i.e., ground boom spray application. Mixer-loaders, cleanup workers and applicators will be considered. Factors such as effectiveness of protective clothing will also be considered. Further, this example will consider only an individual farm operation scenario. 

Exposure Estimate - Applicator - Individual Farm Ground Boom Spray Operation ... 

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