Because of this, we strongly recommend using them as partners for seed treatments and encourage growers to use a seed treatment on all their cotton to ensure uniform thrips protection. Spray NSKE @ 5 % OR acetamiprid 20 SP @ 0.2g/l OR fipronil 5 SC @ 1 ml/l. In some situations (high thrips infestations and/or slow seedling growth) supplemental foliar insecticides may be needed in addition to at-plant insecticides. Incidence of these secondary pests often requires further sprays, which can be expensive. In 2011, we began observing reduced tobacco thrips control with the active ingredient thiamethoxam. Learn More About NC State Extension, We have several topic based e-mail newsletters that are sent out periodically when we have new information to share. You also may see big differences in varietal responses to thrips feeding. As a result, we have switched over almost exclusively to imidacloprid-based products. Not much has changed since last year in regards to thrips control via insecticide seed treatment. (Optional) In this case, the oil is made from … This does not include value added through the North Carolina’s textile industry. Seed treatment. Some of these may be packaged with nematicides, such as abamectin and thiodicarb, that have some activity on thrips. Timely, judicious use of foliar insecticides is also an important component of IPM in cotton when insect counts indicate that pest populations have exceeded economic thresholds. Once you have this information, you will be able to make a decision. Neem oil is another natural insect repellant. or imidacloprid (Gaucho, Aeris, etc.) You will automatically get notified when we post news and tag it, Extension Weed Specialist & Assistant Professor, Professor of Crop Science & Extension Cotton Specialist, N.C. Some of the more popular choices for thrips control in Kansas are the seed treatment thiamethoxam, planting-time applications of acephate and phorate, or foliar treatments of a low rate of dimethoate or acephate. NC State Extension is the largest outreach program at NC State University. “It’s impressive technology, and it’s important to us now because we’re seeing issues with seed treatments controlling thrips,” Stewart says. The best defense against thrips is a rapidly growing cotton … 2020 recommendations for controlling thrips in cotton. Please refer to the most recent Cotton Insect Management Guide for material rates and control options. Cotton acreage reached its height in 1926, when North Carolina producers planted right at 2 million acres. The western flower thrips (WFT), Frankiliniella occidentalis is a recent exotic invader also found in cotton regions. With the loss of Temik for the 2012 growing season, insecticide seed treatments (ISTs) and over-sprays will be critically important for controlling thrips on seedling cotton. Aeris-treated seed still provides good control and is available from Bayer as a downstream treatment at your local dealer. Insecticide applications can knock down pests such as plant bugs, stink bugs and bollworms and can also help red… Active ingredients available for thrips are acephate (not a neonicotinoid), clothianidian, imidacloprid, or thiamethoxam (all neonicotinoids). Thrips are some of the most damaging insect pests to the leaves of onions world-wide. The site may not look or function as expected. Want to see which lists are available? Cooperative Extension has offices in every county, NCDA&CS Agronomic Services – Soil Testing, NCDA&CS Agronomic Services – Plant Tissue Analysis, North Carolina Cotton Insect Scouting Guide, 2014 Cotton Belt Regional Insecticide Efficacy Summary, 2018 Cotton Belt Regional Survey Insecticide Efficacy- Cotton, Corn, Soy, North Carolina Cotton Producers Association, Southern Southeastern Cotton Growers and Ginners, Cotton Cultivated: Cotton Ag Data, Resources & Trends, Guidelines for Use of a Wick Applicator for Applying Mepiquat Chloride, Calibration of a Wick Delivery System for Mepiquat Chloride, Mountain Horticultural Crops Research & Extension Center, Vernon G. James Research & Extension Center, Entomology – Insect Biology and Management, Mountain Horticultural Crops Research and Extension Center, Weed Management in Nurseries, Landscapes & Christmas Trees. When immatures are showing up, this means that seed treatments are beginning to break down and reproduction is taking place. There is increasing resistance of thrips to insecticide seed treatments, and Temik, the old standard insecticide for thrips control in cotton, was withdrawn from the market in 2011. In 2017, many growers experimented with the additional overtreatment of acephate or in-furrow sprays on top of imidacloprid treated seed and reported excellent results across the state. Additionally, if you are set up to spray in-furrow, acephate at 0.75-1 lb/acre is a very good option in addition to an imidacloprid seed treatment but not in place of. Lots of folks are wondering what to use downstream for thrips in cotton. N.C. Cotton insect report Charles Davis , a Clemson Extension row crops agent in Richland County, said thrips – a tiny, destructive insect – are being reported in fields where cotton is emerging. The best foliar insecticide application timing for thrips control is the one- to two-leaf cotton stage for maximum economic returns; however, this does not line up well with residual herbicide applications, so insecticide applications are often considered an “extra trip.”. Send Explanation. It is similar in appearance to F. schultzei but paler, making it easy to distinguish from F. schultzei but hard to distinguish from T. tabaci.WFT causes similar damage to cotton seedlings and also eats mite eggs. It shows selectivity in the other beneficial organisms in crops such as cotton, tomato, Burberry, apple, and many others. Based in the College of Agriculture and Life Sciences, we reach millions of In 2015, we began to see a decline in efficacy with imidacloprid in select trials. UT recommends the following insecticides: Acephate or Orthene (90 or 97%) at 0.20 – 0.25 lbs product per acre. Thrips are really little tan colored insects that have the shape of a grain of rice but they are way smaller. Thrips are part of the order Thysanoptera, and are common garden pests that suck plant juices and sometimes spread viruses. Stem smearing with imidacloprid 17.8 SL @ 1ml:20 ml water and brush the liquid on the growing tip of the plant. Again, active ingredients or rates within a brand name seed treatment can vary from year to year, although marketed under the same or similar brand name annually, therefore it is important to ensure that you are purchasing a treatment that includes the full rate (0.375 mg ai/seed) of imidacloprid. Tobacco thrips are the species encountered more than 90% of the time in Mississippi. The best approach to managing thrips and other cotton insects is preventative control. either alone or in combination with a nematicide. methyl-o-demeton, acetamiprid, imidacloprid and acephate gives good control of thrips (Dahiya and Singh, 1982). The value of the raw cotton and cottonseed produced in the state is worth about half a billion dollars. Some of these may be packaged with nematicides, such as abamectin and thiodicarb, that have some activity on thrips. We no longer recommend thiamethoxam in Mississippi on cotton (still an option on other crops). Catchot may be reached at firstname.lastname@example.org. Plant bugs (Lygus spp.) Importantly, they can also completely flop without an insecticidal seed treatment in some cases (with the exception of AgLogic which, depending on rate, usually looks as good or sometimes better than a seed treatment). Resistance in tobacco thrips to thiamethoxam has been important to remember that there will always be adult on... Fact Sheet ( W026 ) an option following insecticides: acephate or Orthene ( 90 or 97 % ) 0.20! Occidentalis is a recent exotic invader also found in cotton is 100 % a good start with good thrips with! 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