Recognize the problem
The larva cut off leaf tips to make leaf cases. It feeds by scraping the leaf tissue, leaving the papery upper epidermis, giving a ladder‐like appearance of skeletonized leaf tissues. Severely attacked fields have a whitish appearance because of damaged plant tips, especially in nurseries. Damage includes; leaf cases floating on water, leaves cut at right angles as with a pair of scissors, leaves with papery upper epidermis that were fed-on, skeletonized leaf tissues usually appear ladder-like, the leaf blades are eaten away completely leaving the mid rib only. They also construct tubular cases inside leaves and remain inside these leave rolls and feeds upon the foliage.
Background
Mature larva inside the leaf casing.
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The eggs are pale yellow, disc-like shape, laid in single or in cluster on the undersurface of the leaves. The larva is light green in colour with a light brownish-orange head. The pupa is cream and becomes silvery white when it matures. The adult is small white moth with pale brown markings. A life cycle takes about 35 – 40 days.
Management
Caseworm adult moth.
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•
Destroy eggs during transplanting from nursery to field.
•
Irrigate the nursery at level of leaf collar, and use a mosquito net to catch the worms floating on the cuttings.
•
Drain water and use filter to catch worm. Re-irrigate after 2‐3 days.
•
Apply ash to the place where insects infest.
•
Spray neem leave extract to the place where insects infest.
•
Release ducks to the field.
•
Rotation of crop.
•
Destruction of weeds around the paddy fields (weeds acts as alternate host of this pest).
•
Preserve beneficial insects.
•
In case the measures mentioned above fails, use less harmful insecticide and follow recommendations of a technical expert, use insecticides such as Fipronil.
When using a pesticide, always wear protective clothing and follow the instructions on the product label, such as dosage, timing of application, and pre-harvest interval.
Indexing Terms
Descriptors
- arthropod pests
- ash
- biological control
- biological control agents
- botanical insecticides
- chemical control
- control
- cultural control
- drainage
- extracts
- fipronil
- insect control
- insect pests
- insecticides
- irrigation
- natural enemies
- neem extracts
- pest control
- pesticides
- pests
- plant extracts
- plant pests
- poultry
- predators
- publications
- rice
- waterfowl
- aquatic animals
- aquatic organisms
Organism Descriptors
Identifiers
Geographical Location
Broader Terms
- invertebrates
- animals
- eukaryotes
- Azadirachta
- Meliaceae
- Sapindales
- eudicots
- angiosperms
- Spermatophyta
- plants
- vertebrates
- Chordata
- Anatidae
- Anseriformes
- birds
- Hexapoda
- arthropods
- Pyralidae
- Lepidoptera
- insects
- Poaceae
- Poales
- commelinids
- monocotyledons
- Oryza
- Parapoynx
- ASEAN Countries
- Indochina
- South East Asia
- Asia
- Least Developed Countries
- lower-middle income countries
- medium Human Development Index countries
Information & Authors
Information
Published In
Applicable geographic locations
Asia, Cambodia
Copyright
© CABI 2012. This article is published under aCreative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0)Published under a CC-BY-SA 4.0 licence
History
Issue publication date: 1 January 2013
Published online: 23 January 2014
Language
English
Authors
Metrics & Citations
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