Release Encarsia at the first sign of Whitefly by hanging individual cards on plant foliage. Release rates vary depending upon crop, infestation and season of the year.
General Applications: Separate individual cards by tearing strips along perforations. To prevent damage to Encarsia, avoid touching circle where parasites are contained.
Tomato Applications: Hang cards in a shady position among crop foliage around the third cluster from the top of the plant. Distribute cards uniformly throughout crop. One strip per 4 plants weekly for 8-10 weeks.
Cucumber Applications: Hang cards 1-1.5 feet from the top of the plant. Distribute cards uniformly throughout crop. One strip per 2 plants weekly for 8-10 weeks.
Greenhouse Ornamentals: Place or hang cards in a shady position level with lower leaves. Avoid contact with growing media. Two strips per plant weekly for 8-12 weeks.
Follow these guidelines for effective control of greenhouse whitefly:
- Suspend the cards below plant tops.
- Cards can be put on stakes or hung from the edge of a pot.
- Do not touch the eggs or pupae.
- Do not hang them in direct sunlight.
- Place as close to whitefly populations as possible.
- Leave the cards in place for at least 10 days to allow all eggs to hatch.
- Look for parasitized whitefly pupae, easily distinguishable from pupae that have not been parasitized.
Storage: Do not store cards. If incubating cards, release adult wasps immediately after emergence.
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Shelf Life: Use within 18 hours of receipt. Keep out of direct sunlight. Do not allow to freeze.