<H1>Vapor Drift</H1> <P><UL> <LI><H2> the volatilization or evaporation of a pesticide from the soil or crop surface that occurs after application. </H2> </UL><UL> <LI><H2> Factors that influence vapor drift include: </H2> </UL><UL> <H2> * vapor pressure/volatility </H2> </UL><UL> <H2> * temperature </H2> </UL><UL> <H2> * wind speed</H2> </UL></P> <P></P> <P>