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Pest Management Decision Guide
12 August 2019

Leaf folder on rice.: Cnaphalocrocis medinalis; Pata morano poka

Pictures

Rice leaf folder larvae (NBAIR)
Adult lead folder moth (Pest and Disease Image Library, Bugwood.org)

Prevention

Observe closely during the growing season to prevent the pest outbreak.
Avoid closer planting, maintain the spacing 20x20 or 25x15 cm2.
Avoid ratooning.
Flood and plow field after harvesting if possible.
Conserve natural enemies such as Cardiochiles philippinensis, Goniozus spp, Copidosomopsis nacoleiae, Trichomma cnaphalocrocis and Trichogramma spp., predators (spiders) by avoiding the use of broad-spectrum insecticides.
Follow crop rotation.
Placing perching in rice field after transplanting for nesting insectivorous bird.

Monitoring

Use pheromone and light traps to monitor pest incidence.
Monitor weekly from mid tillering to flowering for the presence of the insect pest and damage symptoms.
Look for symptoms (damaged leaves: larvae roll the leaf longitudinally and feed inside on the green tissues). Longitudinal white streaks appear on rolled leaves.
Open rolled leaves to find insect larvae.
ETL: 25% leave damaged

Direct Control

Install pheromone traps (5/acre from planting).
Collection by sweep nets and destruction of moths.Release of Trichogramma chilonis at a rate of 3cc/acre.
Application of azadirachtin at 2 ml/lit of water. Add sticking agent at 1 ml per litre of water.

Restrictions

When using a pesticide or botanical, always wear protective clothing and follow the instructions on the product label, such as dosage, timing of application, pre-harvest interval, max number of sprays, restricted re-entry interval. Do not empty into drains and water sources.

Direct Control

Spray carbaryl according to product label.

Carbaryl – WHO Class II (Moderately Hazardous).

Spray chlorpyriphos according to product label.

Chlorpyriphos – WHO Class II (Moderately Hazardous).

Spray isoprocarb according to product label.

Isoprocarb – WHO Class II (Moderately hazardous).

Indexing Terms

Descriptors

  1. arthropod pests
  2. azadirachtin
  3. biological control
  4. biological control agents
  5. botanical insecticides
  6. carbaryl
  7. chemical control
  8. chlorpyrifos
  9. control
  10. crop density
  11. cultural control
  12. equipment
  13. extension
  14. flooding
  15. insect control
  16. insect pests
  17. insecticides
  18. isoprocarb
  19. light traps
  20. monitoring
  21. natural enemies
  22. parasites
  23. parasitoids
  24. pest control
  25. pest management
  26. pesticides
  27. pests
  28. pheromone traps
  29. physical control
  30. plant density
  31. plant pests
  32. ploughing
  33. predators
  34. predatory insects
  35. rice
  36. rotations
  37. spacing
  38. traps

Organism Descriptors

  1. Araneae
  2. arthropods
  3. birds
  4. Cardiochiles
  5. Cnaphalocrocis
  6. Cnaphalocrocis medinalis
  7. Copidosomopsis
  8. Copidosomopsis nacoleiae
  9. Goniozus
  10. insects
  11. Oryza
  12. Oryza sativa
  13. Trichogramma
  14. Trichogramma chilonis
  15. Trichomma
  16. Cardiochiles philippinensis
  17. Trichomma cnaphalocrocis

Identifiers

  1. biocontrol agents
  2. biological control organisms
  3. leaf folder
  4. paddy
  5. pata morano poka
  6. pest arthropods
  7. pest insects
  8. pest management decision guides
  9. plowing
  10. predaceous insects
  11. predacious insects
  12. spiders
  13. biocontrol
  14. chlorpyrifos-ethyl
  15. advisory services
  16. extension activities
  17. flooded conditions
  18. sex attractant traps
  19. crop rotation
  20. rotational cropping

Geographical Location

  1. Bangladesh

Broader Terms

  1. Arachnida
  2. arthropods
  3. invertebrates
  4. animals
  5. eukaryotes
  6. vertebrates
  7. Chordata
  8. Braconidae
  9. Hymenoptera
  10. insects
  11. Hexapoda
  12. Pyralidae
  13. Lepidoptera
  14. Cnaphalocrocis
  15. Encyrtidae
  16. Copidosomopsis
  17. Bethylidae
  18. Poaceae
  19. Poales
  20. commelinids
  21. monocotyledons
  22. angiosperms
  23. Spermatophyta
  24. plants
  25. Oryza
  26. Trichogrammatidae
  27. Trichogramma
  28. Ichneumonidae
  29. Cardiochiles
  30. Trichomma
  31. Commonwealth of Nations
  32. Least Developed Countries
  33. lower-middle income countries
  34. medium Human Development Index countries
  35. South Asia
  36. Asia

Information & Authors

Information

Published In

cover image PlantwisePlus Knowledge Bank
Pest Management Decision Guides
Pest Management Decision Guide: Green and Yellow List

Applicable geographic locations

Asia,  Bangladesh

History

Issue publication date: 1 January 2018
Published online: 12 August 2019

Language

English

Authors

Affiliations

M. P. Ali

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