Spray drift models typically rely on field-developed, spray deposition data in order to estimate buffer distances. This presentation is an analysis and comparison of deposition data sets used to support several commonly used spray drift models. The goal of this analysis is to assess commonality between datasets as well as assess their usefulness for predicting off field deposition. Initial work indicates that while the development of spray nozzles has continued in evolution as a large contributor for reducing off field deposition, this development has precluded the use of many older field generated deposition curves. Findings suggest the use of older deposition curves in simulation models can be useful, but only to reflect currently-used older spray nozzle technology.

Comparison of multiple source ground spray   deposition curves for determination of buffers in simulation models

244th National Meeting (2012)

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