The document outlines the process of pest risk analysis (PRA), which evaluates scientific and economic evidence to determine pest regulation and necessary phytosanitary measures to protect agriculture. It details stages of PRA, including initiation, assessment, management, and documentation, along with factors like pest categorization, assessment of risks to productivity, and economic consequences. Emphasis is placed on collaboration and use of technology for effective risk management.

1. PEST RISK ANALYSIS
(PRA)
✩ By
✩ P.SRUTHIKA

2. Introduction:
✩ PRA is the process of evaluating biological or other scientific and
economic evidence to determine whether a pest should be regulated
and the strength of any phytosanitary measures to be taken against it.
Reason for doing PRA:
✩ To protect the country 's agriculture from damages that can be caused by
harmful pests which can be brought in along with imported commodities.
✩ To create lists of regulated pests and to produce lists of prohibited plants and
plant products.
✩ To assist in identifying appropriate management options.

3. PRA Process:
Stage 1 : INITIATION:
✩ New plant species imported for selection, scientific research purposes.
✩ Other pathways are natural spread,mail, garbage etc...
i) Identification of a pathway:
ii) Identification of a pest:
✩ Pest introduced or pest reported more damaging.
✩ Organism genetically altered in a way which clearly identifies its
potential as a plant pest.

4. iii) Review of existing policy:
✩ A national decision taken-review phytosanitary.
✩ A new treatment or loss of a treatment system,a new process,or new
information impacts on an earlier decision.
✩ Identify quarantine pests.
✩ Presence or absence in PRA area
✩ Regulatory status
✩ Categorise pests(do they occur in the pathway)
✩ Prepare data sheet.
Stage 2 :PEST RISK ASSESSMENT:
Step 1: Pest categorization:

5. Step 2: Assessment of Probability:
✩ Probability of survival during transport or storage.
✩ Probability of transfer to a suitable host
✩ Suitability of the environment for natural spread of pest
✩ Adaption, reproductive strategy, method of survival, previous establishment.
✩ Impact on productivity - quantitative and qualitative data (yield loss,increased
control cost).
✩ Impact on trade/market access(domestic, International).
✩ Analysis of economic consequences.
✩ Services of an Economist taken for estimating economic impact on a
hypothetical situation.
Step 3: Assessment of potential economic consequences:

6. Stage 3: PEST RISK MANAGEMENT:
✩ Assess the level of risk
✩ Collect technical information
✩ Acceptability of risk
✩ Identification and selection of appropriate risk management options
✩ Phytosanitary certificates.
Stage 4:DOCUMENTATION:
✩ Purpose of PRA:
❑ Pest,pest list, pathways ,PRA area, endangered area
❑ Sources of information
❑ Categorized pest list

7. ✩ Conclusions of risk assessment:
❑ Probability
❑ Consequences
✩ Conclusion of risk management:
❑ Options identified
❑ Options selected

9. Conclusion:
✩ Quantitative or qualitative estimate of the probability of introduction
available and documented.
✩ Regional and International collaboration is vital to achieve reducing risk of
pest introduction and spread.
✩ GPS and GIS system
✩ Climate mapping
✩ Climographs
✩ Phenology factor
Risk Assessment modes:

10. THANK
YOU ...

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