+94 112 252 028

Entomology & Nemotology Division

Activities conducted by the Entomology and Nematology Division

Activities conducted by the Entomology and Nematology Division

  • Inspecting, testing & issuing of test report to export of plants and plants products according to the request of importing country to be free from insect, pests, mites, snails and plant parasitic nematodes
  • Inspection and sampling of export plants and plant products for insect pests, non insect pests and nematodes at production site and testing of samples in laboratories and issuing reports
  • Instructions given to maintain pest free conditions in exporting plants and plant products at field level and pack houses
  • Conducting soil surveys at foliage nurseries for plant parasitic Nematodes and give instructions to manage nematodes
  • Conducting plant quarantine related research for insect pests, non insect pests and plant parasitic nematodes
  • The laboratory testing for pests and issuing of reports for intercepted samples of imported consignment of plants and plant products and the samples taken from entry ports from consignments without fulfilling the permit conditions (intercepted samples) after the laboratory testing for pests and issuing of test reports
  • Inspection of imported seed potatoes and sampling for laboratory testing insect pest and plant parasitic Nematodes and issuing of reports
  • Maintaining the pest collection of entomology division

Other Activities

  • Conducting trainings and providing technical guidance for farmers, school, university and technical college students, agriculture teachers, officers of government and private sectors, importers, exporters and other related stakeholders
  • Preparation of leaflets and posters related to entomology and nematology
  • Contribution for exhibitions
  • Certification of plant nurseries for fulfilling the conditions required for importing country e.g. for the plants exporting to South Korea
  • Rearing and maintaining of fruit flies for research activities when necessary.
  • Inspection of special samples for specified pests, identify pests and issuing of reports


  • Inspection of plant commodities for insects and mites

                                    Inspection of Nurseries

                                            Field inspection

                                         Laboratory inspection

                                     Conducting Trainings


Biosecurity and International Relations Division

Bio security and International Relations Division

This division is an age long requirement for the National Plant Quarantine Service, and was established in late 2015. It implements all foundation mandates of a National Plant Protection Organization.

The functions of this division are implemented in common by the technically sound officers of the other technical divisions, whenever required, such as

  • Pest risk analysis for a commodity which is expected to be introduced to Sri Lanka, and define the import phytosanitary requirements of the commodity
  • Develop and upgrade, lists of quarantine pests
  • Upgrading the Quarantine laws and regulations
  • Surveillance and surveys on pests present in Sri Lanka, collection of data, record keeping, reporting and made them available for the interested parties.
  • Providing information on pests of a particular product for a country interested to import the same from Sri Lanka
  • Conflict resolution with other countries on Phytosanitary issues
  • Management of other International relations

             Note: To obtain any services on negotiations with other countries (only on phytosanitory  issues), a person has to make an official  

                      request to the Additional Director, National Plant Quarantine Service, Katunayake

                     (contact details: 0112 225 2028)


Weed Science Division

Weed Science Division
The Weed Science Division of the National Plant Quarantine Service was established in 1999 as one of the major technical divisions in the institute.
The main duty and function of this division is to carryout official phytosanitary certification activities related to weed (including their seeds) and soil contaminations on the export ready and imported commodities.
In Addition the division perform,
  • Predicting the potential invasiveness of a plant requested to be imported
  • Compiling and upgrading Quarantine weed lists
  • Surveys and surveillance on weeds that have been introduced unintentionally or illegally to understand the biology, ecology, reporting their status and developing management options for those weeds
  • Pre import risk analysis, development of import phytosanitary conditions and perform post entry quarantine studies on plants that are regulated to import (due to their potential invasiveness) when they imported for scientific studies
  • Development of identification keys for the quarantine weeds and their seeds, maintaining reference collections and research on pre, intermediate and post entry quarantine management of weeds
  • Taxonomic identification of plants imported to Sri Lanka
The tests performed for the imported and export ready commodities



Quarantine tests

When importing


Planting material (seeds)

Weed seed test, soil test


Planting material (seedlings)

Weed seed test, soil test


Planting material (rooted cuttings, unrooted cuttings)

Weed seed test, soil test


Human food and animal feed

Weed seed test


Soil imported for special reasons

Weed seed viability test


Growing media

Weed seed viability test, soil test


When Exporting


Coir products

Grow-out  test, soil test


Human food and animal feed

Weed seed test


Planting material (rooted cuttings, unrooted cuttings)

Weed seed test, soil test


Grow out test – test is performed for growing media (coir, peat moss, mushroom growing media, etc.) and sand imported under special conditions.
      - The  test conditions are universally set
      - Time taken for the test will be 28 days (minimum)

Detection and diagnosis of weed contaminats in consignments

Pathology Division

Pathology Division

Services Rendered by Pathology Division

Inspection of import/export cargo of plant, & plant products

In situ – Random sampling and visual observation
At Laboratory – Culturing and other tests


  • Inspection of plant nurseries and production fields

  • Identification of diseases

All the disease identification techniques universally accepted are followed on requirement

  • Auditing export vegetable nurseries
  • Advisory services for plant nursery men/ coir exporters
  • Conducting training and awareness programmes
  • Studies on the diseases of imported seed potatoes
  • Research activities related to plant quarantine

Identification of pathogens

  • Export consignments – foliage, coir, vegetables, fruits,  flowers
  • Import consignments
  • Submitted samples by nursery men

Identification Methods

  • Visual Observation
  • Microscopic Observation
  • Humid Chamber Method
  • Culture Plate Method
  • Bio-chemical tests
  • Ooze test
  • Strips
  • Molecular Techniques

Visual Observation
Samples check for disease symptoms and for any disorder by naked eye.

Microscopic Observation
Light and inverted microscope is used to identify the fungal pathogens

Humid Chamber Method
Live samples are kept at the chamber under high RH conditions to facilitate the sporulation.

Grown spores and mycelium observed under the microscopic contions.

Culture Plate Method
Samples with disease symptoms are culture on nutrient media to facilitate the pathogen growth.

Bio-chemical tests

Basically practice for bacterial identification

Organisms utilize different organic compounds for their metabolisms and colour reactions, solidification or liquefication of media are used to distinguish the pathogenic group.


Used to identify viruses based on antibody and enzymatic reactions

Molecular Techniques

Any type of pathogen can be identified with high precision by using this tool. Specific primers are employed in identification.