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Frankliniella occidentalis (Western Flower Thrips), Thrips tabaci (Onion Thrips)
Both the western flower thrips and the onion thrips are major problems in many plants, especially ornamentals, sweet pepper, and cucumber.
--BIOLOGY--
Thrips go through six stages of development: egg, two larval stages, pre-pupa, pupa, and adult. Mature thrips are found in flowers and on leaves, where they deposit their eggs. In sweet pepper, the egg laying sites are easily recognized as wart-like deformities on the leaves. The larvae feed on all above ground parts of the plant and are extremely mobile. Pupation takes place on the ground.
--DAMAGE--
Thrips primarily cause damage to the plant by piercing and sucking dry leaf surface cells. As a result, photosynthesis is significantly reduced. At high pest densities, fruit damage can occur, e.g. in cucumber, damage to the young fruit causes distortions called "pig-tails". In ornamental plants, flowers and leaves may be scarred. Apart from this direct damage, thrips can also transmit plant viruses.
--BIOLOGICAL SOLUTIONS--
Biological control of thrips is possible with the following Koppert products: THRIPEX, THRIPEX-V, THRIPEX-PLUS, THRIPANS, THRIPOR, ENTOMITE and CHRYSOPA.
For more information, ask our expert.
Products in blue are Garden/Greenhouse Accessories.
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