Two of the six methods reviewed here, those of
Higley and Wintersteen (1992), and Hornsby (1992),
do not take into account the amount of pesticide
applied, which is surprising because the rate of
application cannot but have a major effect on pesticide
concentration in the environment. Application
technique (aircraft or tractor, soil incorporation or
not) strongly affects drift, runoff and volatilisation
potential of the pesticide and should therefore be
considered in environmental impact assessment.
However, it is considered in the method proposed by
Reus and Pak (1993) only. Pesticide metabolites may
be as environmentally undesirable as the pesticide
itself, so they should be taken into account in the
environmental impact assessment of a pesticide. In
spite of this, only the method proposed by Reus and
Pak does so.
Two of the six methods reviewed here, those ofHigley and Wintersteen (1992), and Hornsby (1992),do not take into account the amount of pesticideapplied, which is surprising because the rate ofapplication cannot but have a major effect on pesticideconcentration in the environment. Applicationtechnique (aircraft or tractor, soil incorporation ornot) strongly affects drift, runoff and volatilisationpotential of the pesticide and should therefore beconsidered in environmental impact assessment.However, it is considered in the method proposed byReus and Pak (1993) only. Pesticide metabolites maybe as environmentally undesirable as the pesticideitself, so they should be taken into account in theenvironmental impact assessment of a pesticide. Inspite of this, only the method proposed by Reus andPak does so.
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