Presentation about pest risk analysis.pdf

About stages involved in PRA

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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