State of Michigan Act 451 Part 83.
Overview of Procedure
A Drift Management Plan:
1. Helps the applicator determine when
wind direction or speed, precipitation, or other weather conditions make it unsuitable to
conduct certain types of pesticide applications.
2. Helps the applicator select the
appropriate formulations, spray additives, equipment, application techniques, and other
mechanisms to minimize potential drift.
3. Provides the names, addresses, and
phone numbers of residents in the affected area who need to be notified prior to a
pesticide application when drift is a possibility (informed consent), or who need to be
notified that an unexpected drift may have occurred.
Any U-M employee who applies pesticides
as a part of their regular job responsibilities must be certified and/or registered in
accordance with MDA Regulation R 285.636.
A Drift Management Plan is
actually a decision-making device that assists the applicator in accurately treating the
target trees, shrubs, or lawns while using the minimum amount of product. It includes use
of any or all of the following practices:
1. Use of a combination of spray
nozzles, pressures, and particulating agents to obtain the largest spray droplets
applicable to a host plant. Larger spray droplets will not drift as far as smaller spray
2. Use of any specialized equipment
that is designed to minimize off-target drift. Ultra Low Volume sprayers present the
greatest hazard for drift because the droplets are fine. Wick applicators (i.e.,
Expedite), have virtually no drift.
3. Use of the closest possible spray
release to the target. As the distance of the boom or nozzle from the target increases,
the potential for wind effect and drift increases.
4. Identification of the maximum wind
speed and direction under which application can be made because weather conditions affect
distance of drift.
5. Use of wind shields or windbreaks to
contain spray drift or deflect spray drift away from sensitive areas, or spray when
adjacent susceptible vegetation is mature or not present. These measures are intended to
control the adverse effects of spray applications harming non-target vegetation.
& Health Precautions/Personal Protective Equipment
Follow all applicable
safety and health protocols and regulations as established by your institution.
The use of a Drift
Management Plan helps to minimize the impact of pesticides on non-target areas, especially
sensitive regions that may be in the area being sprayed.
Information not available.