Spider mite larvae, nymphs and adults feed on the underside of the leaves and cause yellow spots, later even yellow leaves. This results in decreased plant growth and production. Finally the crop may die from the infestation. Nymphs and adults produce webbing that can cause cosmetic damage to the crop. If large numbers of spider mites are present, plants may be completely covered with webs.
Spider Mite Control - Phytoseiulus persimilis, Mesoseiulus longipes, Neoseiulus californicus, Galendromus occidentalis
- - For tomatoes and cucumbers, 1 predator per plant plus 1-2 per infested leaf.
- - For other greenhouse crops, tropical plants, and outdoor gardens, 2,000 per 3,000 sq. ft.
- - For bedding plants, 1,000 per 10,000 sq. ft.
- - For large agri-business, 5,000 - 20,000 per acre depending on infestation.
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