Application of entomopathgenic nematodes at the rate of 400 infective juveniles/ cm2 of soil surface can cause over 50% mortality of thrip population. Frankliniella occidentalis (Pergande), western flower thrips (WFT), is a major worldwide pest of vegetables and ornamental crops. Western flower thrips (WFT) (Frankliniella occidentalis) is one of the most important insect pests of bedding plant in Massachusetts, New York, and the northeastern United States in general.Pesticides can be used for its control, but there are problems because this pest has developed resistance to many materials, including dimethoate, cyfluthrin, permethrin, … Table 1. The reduced aesthetic quality caused by the Western flower thrips and the tomato spotted wilt Thrips. ... control of the western flower thrips is likely to be difficult and costly in the foreseeable future. Biological Control Integrate Pest Management Tomato Spotted Wilt Virus Sweet Pepper Western Flower Thrips These keywords were added by machine and not by the authors. 2002;155(4):229-35. doi: 10.1023/a:1021177626246. That’s why thrips have become one of the most feared and widespread pests. The Western flower thrips, Frankliniella occidentalis, is a devastating pest of ornamentals and the major vector for tomato spotted wilt virus. At this temperature, an adult female produces an average of 76.6 eggs in her lifetime (Zhang et al. Scientific name, predator type, and comments associated with commercially available biological control agents of the Western flower thrips, Frankliniella occidentalis . This process is experimental and the keywords may be updated as the learning algorithm improves. “Definitely, we can use entomopathogenic fungi or nematodes,” UC Cooperative Extension’s Dr. Surendra Dara said. On cabbage leaves at 27°C, western flower thrips develops from egg to adult in 10.2 days. The biology of WFT was examined on gerberas, chrysanthemums and roses in relation to plant stage (flowering and non‐flowering), pupation site, soil moisture and plant parts often inhabited by adult and immature thrips. The commercially available biological control agents and the Western flower thrips life stages that are susceptible to predation are presented in Figure 1. This insect is difficult to control due to its wide range of hosts, ability to develop resistance to pesticides, and vector capabilities. It takes western flower thrips 3.07, 1.78, 2.38, 1.00, and 2.04 days to complete the egg, larva I, larva II, prepupal, and pupal stages respectively. Predatory mites were reared on small plastic arena’s (8 x 10 cm) placed on pads of The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks. Biological control of thrips can be implemented successfully. However, it must be part of a well planned IPM or biological control program that includes, scouting, monitoring, and use of insecticides that are compatible with natural enemies. An excellent natural adaptation capacity? There are a few biological tools available to growers but they require some planning. They are inserted into the plant tissue with a saw-like ovipositor. “And there are a number of biocontrol agents. Western flower thrips can be a big issue for certain growers, especially lettuce producers. Prospects for biological control of the western flower thrips, Frankliniella occidentalis, with the entomopathogenic fungus, Metarhizium anisopliae, on chrysanthemum Mycopathologia . _____ Biological Control of Whiteflies and Western Flower Thrips with a Phytoseiid Mite Second International Symposium on Biological Control of Arthropods 557 DIAPAUSE Diapause experiments were performed according to the method described by van Houten et al. The insect- parasitic nematodes such as Thripinema nicklewoodii also have a potential to use as a biological control agent against western flower thrips. The most common and harmful species are the onion thrips Thrips tabaci and the western flower thrips Frankliniella occidentalis.These pests are less sensitive to pesticides and cause serious damage to vegetable crops as well as to ornamentals and soft fruit. Biological control of western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), in gerberas, chrysanthemums and roses Andrew G Manners,1* Brock R Dembowski1,2 and Madaline A Healey3,4 1Queensland Department of Agriculture, Fisheries and Forestry, Redlands Research Facility, PO Box 327, Cleveland, Qld 4163, Australia. 2011). 1995. The western flower thrips (Frankliniella occidentalis) develops in six stages: egg, two larval instars, prepupa, pupa, and finally the adult insect.
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