Residue data recently collected from industry and government indicate that pesticide residues are proportional or nearly proportional to application rate for most crops and application types. The analysis of this data was used as a basis for recommendations and proposals for both OECD and CCPR for data extrapolation. Both statistical and pragmatic approaches were used to examine the data and to evaluate the relationship between residues and rate. This analysis will be described, along with a discussion of some of the factors which may lead to the statistical deviation from proportionality that was observed in some cases.

Rates and residues: How proportional are they?

246th National Meeting (2013)

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