Pest - THRIPS
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.
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.
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 control of thrips is possible with the Koppert products listed below.
For more information, ask our expert
Products in blue are Garden/Greenhouse Accessories.
MELON AND SQUASH
POTTED FLOWERS AND BEDDING PLANTS
TREES AND SHRUBS
DIBOX HANGING DISTRIBUTION BOX
HORIVER PEST MONITOR (SMALL YELLOW CARD)
KNOWING AND RECOGNIZING
MAGNIFYING LENS (LOUPE)
© Koppert Biological Systems, Inc. 2003