Feeding by these tiny insects causes plant cells to collapse, which may eventually result in distorted leaves or flowers if the damage was done while the thrips were feeding within buds and terminals, or scarred, silvery patches and flecking if the damage is to open foliage or petals. The damaged patches on expanded leaves and petals will also have tiny greenish-black fecal specks that are left by the thrips.
They also damage the appearance of African violets by spreading pollen over the flowers as they feed on and break open the pollen sac. The thrips' feeding can also transmit one of the two incurable tospoviruses that cause severe damage to greenhouse plants, if the thrips are carrying the virus. Both the thrips and the viruses have a very wide host range including flowers, vegetables, and many weeds. The most dramatic virus problems in U.S. greenhouses have been due to Impatiens Necrotic Spot Virus (INSV). This virus is usually the one causing problems on impatiens, New Guinea impatiens, begonia, cyclamen, cineraria and gloxinia, as well as many other plants. Tomato Spotted Wilt Virus (TSWV) is being found less often than INSV, and is likely to be introduced to the greenhouse by thrips that have matured on outdoor weeds. TSWV has also been found fairly often in tuberous dahlias.
ELISA tests are available at labs to detect and differentiate these two viruses; QTA-Tospo kits (Agdia, Inc, Elkhart, IN) will tell whether you have a tospovirus, but not which one. One viruliferous western flower thrips adult can infect a plant after feeding on it for only 30 minutes. Western flower thrips acquire the virus as first instar larvae, and retain it for the remainder of their lives. Because the immature stages usually remain on one plant and do not move to other plants, most of the spread of the virus is by the adult stage as they fly or are carried by wind currents.
HOW TO GET RID OF FLOWER THRIPS
It is difficult to fight with westren flower thrips.
But it is not impossible.
To prevent plants flowers from flower thrips, controlling and getting rid flower thrips. You can prepare own special organic liquid mixture for flower thrips yourself, both economically and so effective.
To prepare this special organic liquid mixture, You need some ingredients that you can find your country easily, formulation and production process. You need no help and no technıcal support to make this mixture. simple mixing is sufficient.
Below textbook has a formulation and manufacturing process of special organic liquid mixture and methods of application to treat flower thrips. You can produce special organic liquid mixture for western flower thripseasily and apply to plants safety.
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