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PESTICIDES and Pest Management Paul Andre Missouri Department of Agriculture Pesticide Program

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PESTICIDES and Pest Management Paul Andre Missouri Department of Agriculture Pesticide Program. Regulatory Alphabet Soup. EPA NPS MCL HAL TMDL NRCS FIFRA SDWA CWA MDNR FQPA MDA. Questions. MCLs Set Correctly? Who Pays for Water Quality? Significance of PPM,PPB,PPT?. Pesticide Laws.

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regulatory alphabet soup
Regulatory Alphabet Soup





  • MCLs Set Correctly?
  • Who Pays for Water Quality?
  • Significance of PPM,PPB,PPT?
pesticide laws
Pesticide Laws
  • Missouri Pesticide Use Act
  • Missouri Pesticide Registration Act
pesticide laws6
Pesticide Laws
  • FIFRA is the federal law that regulates pesticide registration, use of restricted use pesticides and the certification of pesticide applicators
  • Missouri Pesticide Use Act is the Missouri statute that regulates the use of all pesticides and certification of pesticide applicators in Missouri
  • Missouri Pesticide Registration Act is the state statute that regulates the registration and sale of pesticides in Missouri
water quality laws8
Water Quality Laws
  • Clean Water Act gives EPA the authority to protect the waters of the U.S.
  • Safe Drinking Water Act sets a standard that water must meet before it can be commercially sold
  • Food Quality Protection Act limits the allowable human pesticide exposure
fqpa the risk cup concept
FQPA The Risk Cup Concept
  • Each use of a pesticide contributes a specific amount of exposure (risk) to humans. This is compared to the acceptable amount of risk (risk cup) which can not be exceeded.
  • If a pesticide has multiple uses, priority would be given to specific uses, e.g., crop production. As the risk cup fills, lower priority uses may be eliminated.
Before FQPA, each risk cup related only to the risks associated with food crops.
  • Under FQPA the risk cup must include risks associated with all uses including food, drinking water, use in and around homes, right-of-ways, golf courses, etc.
If two or more pesticides affect human health similarly, the concept of “cumulative risk” is applied.
  • FQPA requires the pesticides share a common risk cup.
  • If the pesticide effects children’s health, a 10X margin of safety is used (the risk cup is smaller).


Agricultural Tools?

Low Cost

High Quality

Food Supply



Public Health Tools?

Insect Control

Disease Control

Vector Control

integrated pest management ipm a balanced tactical approach

Integrated Pest ManagementIPM: a balanced, tactical approach

Anticipates and prevents damage

Combines tactics

Improves effectiveness

Reduces side effects

Relies on identification,measurement, assessment,and knowledge

why practice ipm

Why Practice IPM?

Maintains balanced ecosystems

Pesticides may be ineffective or not needed

Promotes a healthy environment

Saves money

Maintains a good public image

ipm decisions

IPM Decisions

Identify the pest and know its biology

Monitor and survey for pests

Set IPM goal: prevent, suppress, eradicate


Select control strategies



Environmental impacts

Regulatory restrictions


components of ipm identify and understand

Components of IPMIdentify and Understand

Is it a pest, beneficial, or just there?

Study pest biology

Pest classification

Life cycle

Over-wintering stage

Damage impacts

Environmental needs

Vulnerable control stages/timing

components of ipm monitor the pest

Components of IPMMonitor the Pest

Use scouting, trapping, weather data, models

Economics or aesthetics trigger need for action

Pest population

Beneficial population

Geographic location

Plant variety

Plant type & stage of growth

Cost of control measure(s)

Value of plant or crop

components of ipm develop the ipm goal

Components of IPMDevelop the IPM Goal

Prevention:weed-free seed, resistant plants, sanitation, exclusion, pesticide treatments

Suppression (reduction):cultivation, biological control, pesticides

Eradication (elimination):small, confined areas, or government programs

components of ipm implement the ipm program

Components of IPMImplement the IPM Program

Make sure you have taken initial steps

Identification and monitoring

Set action thresholds

Know what control strategies will work

Select effective and least harmful methods!

Observe local, state, federal regulations!

components of ipm record and evaluate results

Components of IPMRecord and Evaluate Results

Know what worked and what did not

Some aspects may be slow to yield results

Might be ineffective or damaging to the target crop, beneficial insects, etc.

Use gained knowledge in future planning efforts

pesticide use considerations
Pesticide Use Considerations
  • Identify the pest and select the appropriate product
    • old or new infestation
  • Avoid developing resistant pest populations
  • If using pesticides, use the correct application rate (dose) and timing
  • Read and Follow the LABEL!
pesticide resistance the ability of a pest to tolerate a pesticide that once controlled it
Pesticide ResistanceThe ability of a pest to tolerate a pesticide that once controlled it

Intensive pesticide use kills susceptible pests in a population, leaving some resistant ones to reproduce

  • Use of similar modes of action
  • Frequency of applications
  • Persistence of the chemical
  • Pest rate of reproduction & offspring numbers
resistance management
Resistance Management
  • Do not use products repeatedly that have similar modes of action
  • Allow some pests to survive
    • Limit treatment areas
    • Consider using lower dosages
  • Use caution: new compounds having very specific actions - may develop resistance more quickly
  • Use non-chemical means to control resistant pest populations
  • Regulatory Approach?


Cooperative, Voluntary, Community (Watershed)-Based Approach?

Pesticide Program

Missouri Dept. of Agriculture

P.O. Box 630

Jefferson City, MO 65102