thripsOnion thrips (Thrips tabaci) and western flower thrips (Frankliniella occidentalis) are a major problem in many protected crops, especially in cucumber.

 

Biology

Thrips go through six stages, namely egg, two larval stages, prepupal and pupal stage and finally the adult stage. The adult thrips are found in flowers and on leaves where they deposit their eggs. On sweet pepper leaves the egg laying sites are easily recognized as wart-like deformations; in cucumber and other crops these deformations are not visible. The larvae feed on all above ground parts of the plant and are extremely mobile. Pupation takes place on the ground.
Symptoms

Thrips cause damage to the plant by piercing and sucking out cells on the leaf surface. This causes silver-grey spots on the leaves, with darkgreen spots (excretions) and reduces the production of the plant. At high infection levels leaves may even wither.

The most important virus transmitted by thrips is tomato spotted wilt virus (TSWV). Frankliniella occidentalis is the mayor vector of this virus, that causes a lot of damage in the Mediteranean countries.
Solutions

ENTOMITE - Hypoaspis aculeifer out of stock
THRIPEX - Amblyseius cucumeris in bran
THRIPEX-PLUS - Amblyseius cucumeris in sachets
THRIPEX-V - Amblyseius cucumeris in vermiculite
HORIVER - yellow sticky PE
HORIVER-TR - blue sticky PE
ROLLERTRAP - yellow sticky PE