Successful IPM programmes for management of western flower thrips (WFT), Frankliniella occidentalis, on UK strawberry crops have been developed using knowledge of its biology and behaviour (Bennison & Fitzgerald . Flower Thrips Flower thrips damage crops through feeding and oviposition, which result in deformation of growing tissues and lead to yield losses in harvested fruits and vegetables, as well as esthetic damage to flowers. A number of thrips species can affect peanuts but their damage is minor and infrequent and should not be a problem in irrigated crops. The most common species of plant-feeding thrips in Texas cotton include flower thrips, onion thrips, and western flower thrips. 4). Certain biological attributes of this insect predispose it to be a direct pest across a wide range of crops. Pear thrips (Taeniothrips inconsequens) Western flower thrips (Frankliniella occidentalis) Pest description and crop damage Adult western flower thrips (WFT) are very small (about 0.04 inch long at maturity), slender insects with fringed wings. , 2015; Reitz 51 S. Afr. However, the recently introduced western flower thrips (WFT) (Frankliniella occidentalis) is a significant threat to peanuts.) 7). is a significant threat to peanuts. Primary economic damage is due to Western Flower Thrip’s (WFT) function as a vector for the topsoviruses tomato spotted wilt virus (TSWV) and impatiens necrotic wilt virus (INWV). Western flower thrips, Frankliniella occidentalis P. (Thysanoptera: Thripidae) is a major agricultural and horticulture pest worldwide (Kirk, 2002; Kirk and Terry, 2003). Thrips have spread throughout the horticulture industry on plugs, cuttings, and small plants. Montdorensis predatory mites feed on both thrips and whitefly, and they are proving to be a very effective biological control agent for these pests in protected crops. Clearly, these economic assessments show that the western flower thrips is one of the most Thrips also spoil fruit finish by rasping the surface while feeding and by puncturing the fruit while laying eggs. The western flower thrips (Frankliniella occidentalis) develops in six stages: egg, two larval instars, prepupa, pupa, and finally the adult insect. 2008 in AHDB project SF 80; Harnden et al . or halo spotting. Because of thrips In the past 30 years, western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), has become one of the most important agricultural pests worldwide. It causes damage and spoilage to a vast number of economically important plant species through feeding, oviposition and spread of several plant diseases, most notably tospoviruses (Morse and Hoddle, 2006 ). Insecticides – Pest Engineering 356 in 2006 to ornamentals caused primarily by western flower thrips damage exceeded US$ 15 million. Generally, any direct damage is overshadowed by the impact of TSWV transmission in tomato. Adults have 4 feathery wings and vary in color from yellow to dark brown; nymphs are white or pale with small dark eyes. Although often numerous on berries when cat-facing occurs, western flower thrips do not cause cat-facing, which is a result of lygus bug feeding and possibly other factors. Adults are 1-2 mm long, and most have a pair of narrow wings fringed with long hairs. The damage is more conspicuous on the Western flower thrips: cotton, navy bean, mungbean, sunflower, canola and peanuts. in SF 120, HL01107; Raffle et al. Adults are winged and capable of drifting long distances in the wind. Frantz G, Mellinger HC. Punctured leaves take on a silvery appearance that eventually turns to brown scarring and can be confused with windburn or blown sand damage. 1, 2010 Western Flower Thrips on Table Grapes every two weeks until 2001-04-10. The traps were removed in the winter, as rain and cold rendered the sticky traps ineffective. They are usually found in flowers. Western Flower Thrips John P. Sanderson Introduction. Western flower thrips feed on lettuce and vector plant viruses. Thrips feeding on strawberry blossoms cause the stigmas and anthers to turn brown and wither prematurely, but not before fertilization has occurred. 31, No. WFT damage plants directly by feeding, and indirectly by acting as vectors for the tospoviruses impatiens necrotic spot virus (INSV) and tomato spotted wilt virus (TSWV). Western flower thrips, Frankliniella occidentalis, are likely the most serious pest of greenhouse crops in the world. Chlorogenic acid Western flower thrips (WFT) Frankliniella occidentalis continues to be a serious pest of floriculture crops in New England. Shifts in western flower thrips, Frankliniella occidentalis (Thysanoptera: Thripidae), population abundance and crop damage. Thrips cause injury to lettuce by puncturing leaves and sucking the plant sap . Greenhouse thrips and western flower thrips are two common pest species in landscapes. The main aim of this study was to test whether mass trapping could reduce damage and to predict whether this approach would be economically viable. The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks. damage.37 Purified cystatin and equistatin, when incorporated intoartificialdiets,reducedWFTovipositionrates. Most pest thrips feed while hidden, often in buds and shoot tips or beneath sepals; you’ll often observe the damage before seeing the thrips. Whole plant and leaf bioassays were used to compare silver damage of WFT to TG and control plants. Damage Apple - White to pink irregular areas called pansy spots develop around egg punctures in young apple Western flower thrips (WFT) cause significant financial losses for strawberry growers in the United Kingdom. Pansy spot caused by western flower thrips (E. Beers, July 2007) Feeding damage is usually more severe on stone fruits Damage Adults and nymphs infest the underside of cotyledons, young leaves and growing points, rasp the plant surface and suck out the cell contents: They attack leaves, leaf buds, and very small squares, causing a silvering of the lower leaf surface, deformed or blackened leaves, and loss of the plant terminal (Fig. They cause damage with their feeding and they are very effective vectors of tomato spotted wilt virus. 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