Bio Control Agents
Pseudomallada astur Banks is commonly known as a green lace wing. It is bright green in colour, soft bodied, transparent wings with lace like venations on wings. Eggs are layed in a peculiar manner along with a stalk and fixes on the leaf surface. Eggs hatches out to grubs.
The grubs are very active polyphagous carnivorous predators. The grub can prey on 1200-1500 eggs, 500-700 insects.
List of crop pest preys of Green Lace wing
- Eggs of crop pests
- Sucking pests
- White flies
- Aphids
- Green hoppers
- Plant hoppers
- Mealy bugs
- Scales
- Maize cut worm
- Tiny caterpillars
Field release rate of Pseudomallada astur eggs for pest management
| S. No. | Pest | Field release rate | Periodicity |
|---|---|---|---|
| 1 | Rugose spiralling whitefly | Low incidence: 150 eggs/tree Medium incidence: 300 eggs/tree Severe incidence: 500 eggs/tree |
3-4 releases at 10 days interval |
| 2 | Bondar’s nest white fly | Low incidence: 150 eggs/tree Medium incidence: 300 eggs/tree Severe incidence: 500 eggs/tree |
3-4 releases at 10 days interval |
| 3 | Aphids | 4 thousand eggs/acre | 3-4 releases at 10 days interval |
| 4 | Other sucking pests | 4 thousand eggs/acre | 3-4 releases at 10 days interval |
| 5 | Tiny caterpillars | 4 thousand eggs/acre | 3-4 releases at 10 days interval |
| 6 | Protected farming in poly houses, green houses | 1 thousand eggs/22sft | 3-4 releases at 10 days interval |
Method of use
Eggs will be given on the paper clips. Eggs must be released in the field as soon as received. The paper clips should be pinned upside down on the lower surface of leaves near pest colonies as soon as received. Avoid pinning near ants.
Trichogramma is a tiny wasp stings on the moth eggs for oviposition in order to complete its life cycle in nature. The pests like leaf eating caterpillars, Stem borers, shoot borers, fruit borers, bud borers etc can be effectively managed by releasing the Trichogramma parasitized eggs. It is very effective in pest management of crops like Chilli, Cotton, Vegetables, Maize, Cereals, Pulses, Oilseeds, Horticultural crops etc.,
- Bracon spp:
Bracon spp are early larval parasitoid. It manages early instar larvae of crop pests, tobacco caterpillar, coconut black headed caterpillar, sorghum and maize shoot borers, shoot borers, fruit borers, head borers, capsule borers, pod borers, cotton boll worms etc.,
- Goniozus spp:
Goniozus spp are late larval and pupal parasitoids, It manages coconut black headed caterpillar and other crop pests.
- Pediobius spp:
Pediobius spp are larval and grub parasitoids. It manages slug cater pillar and chaffer beetles etc.,
