Thrips tabaci is a species of very small insect in the genus Thrips in the order Thysanoptera.It is commonly known as the onion thrips, the potato thrips, the tobacco thrips or the cotton seedling thrips. and thrips (Thrips spp.) Most thrips have various colors such as off-white, yellow, brown or black. Chemical Control of Cotton Thrips. Cotton plants are most vulnerable to injury from thrips species from emergence to the third or fourth leaf stage. Apply to small cotton (approximately 1-4 leaf). Winged adults migrate into fields when seedlings emerge. lint yield advantage when thrips are controlled with a seed treatment. Cotton Thrips. It is an agricultural pest that can damage crops of onions and other plants, and it can additionally act as a vector for plant viruses. During the 2016 growing season, thrips arrived early and stayed longer than expected. cotton thrips; Other Scientific Names. The later planted cotton is at slightly lower risk due to the cotton growing more rapidly with warmer temperatures. Avoid continuous cropping of cotton both during winter and summer seasons in the same area as well as ratooning. Prevention is an easy, cost-effective form of pest management. Tobacco thrips are the most common species observed in Tennessee, but several other species may also occur. The species we encounter greater than 85% of the time is tobacco thrips with western flower thrips typically comprising the other 15%. Cotton thrips is the major hindrance to cotton yield in Pakistan since the start of the 20 th century. Thrips can be found on numerous crop and weed species, many of which are found within cotton production environment. Thrips are also vectors of tobacco streak virus and tomato spotted wilt virus. 1 Both species have fairly wide host ranges, feeding on both broadleaf and grass plants, including alfalfa, common bean, grains, grasses, and various weed species. Tools, such as the Thrips Infestation Predictor for Cotton from North Carolina State University, are reliable indicators of thrips pressure and helpful for planning out a pest management program. Thrips control options are limited to seed treatments, in-furrow applications and foliar sprays. Unlike the Hemiptera (true bugs), the right mandible of thrips is reduced and vestigial – and in some species completely absent. Some of their most popular hosts include African violets, orchids, gladioli, roses, onions, carrots, beans, garlic, cotton, tomatoes, celery, pineapple, cucumber, cabbage, and squash. “Adult thrips are usually brownish or almost black in appearance and have wings (depends on species, tobacco thrips is the most common thrips species infesting cotton and adults will be dark brown or black). Cotton planted prior to May 10 and in conventional tillage is considered at high risk for thrips damage. Most damage occurs These eggs hatch within seven days or less in warm weather. Therefore, preventative use of seed treatments is a standard practice and is very appropriate. Thrips are considered the No. are two of the most economically important insect pest groups impacting cotton production in the USA today, but are not controlled by current transgenic cotton varieties. Do this on several plants and determine the average number of thrips per plant. Tobacco thrips have a shorter average life cycle of about two weeks. 2018). Cotton leaves damaged by thrips. 2010) and in a series of trials in the region during 2016 (Wang et al. Thrips species do their damage by feeding on the terminal tissues with piercing-sucking mouthparts. More thrips pressure occurs farther north and west of Lubbock, where more wheat is produced. (Thripidae – Thysanoptera) Thrips are generally one of the main early season cotton pests. Avoid monocropping. Thrips have asymmetrical mouthparts unique to the group. Fungal spores and pollens are some of the most common places where you can find thrips. Thrips are closely related to the Hemiptera (the bugs). Reports of thrips damage on cotton with an insecticidal seed treatment and/or in-furrow neonicotinoid (Admire Pro) have increased over the past week. Thrips have “punch and suck” mouthparts that allow them to punch a hole in a leaf cell, insert their maxillary stylets, and suck up the cellular fluids. So, when you are searching for thrips it can be easy to mistake some dirt of a piece of plant that is stuck to the bottom of the cotton leaves for a thrips. Preferred Scientific Name. Concern about thrips resistance to neonicotinoid insecticides (the active ingredient in Admire Pro and insecticidal seed treatments) has generated lots of questions about managing damage on susceptible cotton. In Louisiana, and across most of cotton states, thrips are considered the number one early season insect pest. In many field crops, thrips are only a significant pest at the seedling stage, however thrips in summer pulses can cause flower abortion or pod distortion. In much of Texas, thrips are a minor pest of early-season seedling cotton, but can be severe in areas prone to cool, wet conditions when plant growth slows down. They initially damage the cotyledons and then several other parts including the bolls and the types of damage vary according to the parts of the plant attacked. The rates above provide consistent control unless western flower thrips (WFT) are also present. Thrips are a pest of seedling cotton. Spray NSKE @ 5 % OR acetamiprid 20 SP @ 0.2g/l OR fipronil 5 SC @ 1 ml/l; Stem smearing with imidacloprid 17.8 SL @ 1ml:20 ml water and brush the liquid on the growing tip of the plant NC State Extension Research Specialist Dr. Dominic Reisig addresses thrips control in cotton as a part of the CHROME Regional Ag Expo. Thrips tabaci, T. palmi and Scirtothrips dorsalis. 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