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Decisions - Integrated Pest Management - Lecture Slides, Slides of Pest Management

Main topics of this course are: Biocontrol Approaches, Decision Making, Disadvantages of Cultural Controls, EBPM Status, Enforced Crop Production Rules, Hybrid Sterility, IPM Evolution Continued, Regulatory Tactics, Resistance Categories. Key points of this lecture slides are: Decisions, Tactical, Legal,Environmental Issues, Potential Damage, Pest Population Density, Decision Itself, Seasonality Factors, Monitoring, Phenology, Number Or Size of Population

Typology: Slides

2012/2013

Uploaded on 08/31/2013

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Most Decisions are Tactical &
Follow a Procedure
1. Identify pest
2. Determine pest population density
3. Evaluate potential damage
4. Review available control tactics
5. Consider possible interactions with other
pests
6. Evaluate legal/environmental issues
7. Make a decision
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Most Decisions are Tactical &

Follow a Procedure

1. Identify pest

2. Determine pest population density

3. Evaluate potential damage

4. Review available control tactics

5. Consider possible interactions with other

pests

6. Evaluate legal/environmental issues

7. Make a decision

The Decision Itself

  • Must rely on a priori objective criteria.

Often an economic framework.

  • Four possibilities

A. No action B. Reduce Pest Population C. Reduce Crop Sensitivity to Damage D. B & C above

8. Follow-up to confirm expected outcome

Identification: Focuses on early

seasonality factors

  • Pathogens – Identification of conditions

leading to disease often more important

than identifying the pathogen itself.

  • Weeds – Seedling identification is the

main issue

  • Arthropods – Knowing when immatures

will be present often a key to

identification of pest problems.

Monitoring

  • Synonymous with “Scouting”, “Sampling”, “Pest Surveillance”
  • Normally conducted to gather information needed by a decision tool
  • Types of decision tools that using monitoring info include tools that: - Time preventative treatments - Determine whether curative controls are needed - Determine whether either of the above were effective - Select specific measures from several choices

Requirements of Monitoring

Methods

  • Simple to use
  • Fast
  • Inexpensive
  • Applicable to a broad range of pests
  • Reliable for decision making purposes

Reliability for Decision Tools

II^ I

III IV

Pest Population on One Sample Date

Pest Population on Next Sample Date

Max Tolerable Pest Pop.

Max Tolerable Pest Pop.

Reliability Depends on Several

Factors

  • Specific species being monitored
  • Sites (site selection is important)
  • Specific technique being used
  • Number of samples taken
    • Number at each site & number of sites
  • Weather
  • Observer (Scout) – Scout training is emphasized
  • Other minor effects:
    • Field size, location, & aspect
    • Time of day (pests with diurnal activity)
    • Field history

Some of These are Linked

  • Specific species being monitored
  • Sites (site selection is important)
  • Specific technique being used
  • Number of samples taken
    • Number at each site & number of sites
  • Weather
  • Observer (Scout) – Scout training is emphasized
  • Other minor effects:
    • Field size, location, & aspect
    • Time of day (pests with diurnal activity)
    • Field history