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. To date, this has still not fully materialized. The probability of having a thrips infestation in cotton is 100%. or imidacloprid (Gaucho, Aeris, etc.) Cotton seed comes with a variety of seed treatment options that may either be purchased through a seed company or … 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. Cotton seed comes with a variety of seed treatment options that may either be purchased through a seed company or applied by a dealer downstream. Not much has changed since last year in regards to thrips control via insecticide seed treatment. Cotton acreage rebounded without the boll weevil to contend with in the 80s and 90s, reaching almost a million acres in 2001. Poor seedling growth will almost always delay maturity and make plant bug management much more difficult. 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.Thus, seed or foliar‐applied chemical insecticides are typically required to protect cotton from these pest groups. (6 days post insecticide application), whole seedlings were collected and submerged in soapy water in a glass Mason jar and vigorously shaken to dislodge thrips. If Aeris is not an option, I would strongly consider having your dealer over-treat your imidacloprid treated seed with acephate (6.4 oz/cwt). Finally, you have foliar rescue treatments as an option. The site may not look or function as expected. Want to see which lists are available? For in-furrow thrips treatment, Admire Pro, AgLogic, Orthene, Thimet, and Velum Total in-furrow are all options. The finding of 2-3 thrips per plant is our treatment threshold. The value of the raw cotton and cottonseed produced in the state is worth about half a billion dollars. Catchot may be reached at alc4@msstate.edu. Tobacco thrips are the species encountered more than 90% of the time in Mississippi. Higher rates usually do not improve control. or imidacloprid (Gaucho, Aeris, etc.) 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). Thrips management is very limited with the only options being a preventative seed treatment or foliar rescue application of Bidrin, Orthene, Dimethoate, Radiant, or Intrepid Edge. Starting off with a good seed treatment is an excellent way to control insects above and below the ground. Data from more than 35 trials in Mississippi shows a 115 pounds of lint yield advantage when thrips are controlled with a seed treatment. 1 Both species have fairly wide host ranges, feeding on both broadleaf and grass plants, including alfalfa, common bean, grains, grasses, and various weed … Seed treatment. 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. 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. All Rights Reserved. NC State Extension is the largest outreach program at NC State University. When thresholds are met or exceeded, options for foliar sprays of insecticides include, but are not limited to, the organophosphates acephate, dicrotophos, dimethoate, and the spinosyn 11 spinetoram as the most efficacious materials available for post-planting control of … Under good conditions, thrips applications past the third true leaf stage typically have little benefit even though some thrips injury will likely be visible. Read our Commitment to Diversity | Read our Privacy Statement. The same thing that connects it to every corner of North Carolina: NC State Extension. 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. This is because brand names change and the active ingredients associated with these brands change over time. This option is being utilized again this year. Cotton acreage reached its height in 1926, when North Carolina producers planted right at 2 million acres. “All these products in-furrow without an insecticidal seed treatment can provide equivalent control to a seed treatment in some cases,” Reisig pointed out in a blog posting. 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. 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. in Breaking News, Production, • By Whitney Crow, Angus Catchot, Jeff Gore and Don Cook •. Application of systemic insecticides in-furrow or seed treatment provides preventative control from early season pests, such as thrips. In 2015, we began to see a decline in efficacy with imidacloprid in select trials. 6). In 2011, we began observing reduced tobacco thrips control with the active ingredient thiamethoxam. Active ingredients available for thrips are acephate (not a neonicotinoid), clothianidian, imidacloprid, or thiamethoxam (all neonicotinoids). North Carolina planted about 450,000 acres in 2013, which places the state third in cotton acreage behind Texas and Georgia. Chemical Control of Cotton Thrips. Although there are many species of thrips, the western flower and onion thrips are the most common species in North America. 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. It shows selectivity in the other beneficial organisms in crops such as cotton, tomato, Burberry, apple, and many others. However, this phenomenon is not extremely widespread. Since then, the use has increased substantially. What made it so helpful? This does not necessarily mean that a foliar insecticide is warranted. Adults are winged and capable of drifting long distances in the wind. From these studies, any seed treatment with a full rate of imidacloprid provided equivalent control (for example, Acceleron, Aeris, and Avicta Elite), even when packaged with other insecticides. UT recommends the following insecticides: Acephate or Orthene (90 or 97%) at 0.20 – 0.25 lbs product per acre. (Optional) 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. We confirmed a few years ago that certain varieties seem to exhibit some host plant resistance to thrips. either alone or in combination with a nematicide. Acephate (Orthene) seed treatment has provided moderate control in our environment and should be avoided as a standalone seed treatment. 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. 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. Cotton has been important to North Carolina for many years, both in agricultural production and in the textile industry. The best approach to managing thrips and other cotton insects is preventative control. © 2007 - 2021 One Grower Publishing. Emamectin benzoate is a powerful insecticide against Lepidoptera and a vast host of other harmful insect pests including thrips. In-furrow. We no longer recommend thiamethoxam in Mississippi on cotton (still an option on other crops). It’s critical to not only get the 1) active ingredient from your dealer, but also to get the 2) rate of insecticide applied to the seed (0.375 mg ai/seed is common for most). As a result, we have switched over almost exclusively to imidacloprid-based products. Dr. Reisig tested all commercially available seed treatments in two locations yearly from 2015 to 2017 through work supported by the NC Cotton Producers Association, with further studies performed by Dr. Kennedy’s program (NC State University Entomology and Plant Pathology Department). Does not necessarily mean that a foliar insecticide is warranted as thiamethoxam ( all neonicotinoids ) Carolina: State! Adults are winged and capable of drifting long distances in the couple years in Mississippi is the generic aldicarb AgLogic. And thiodicarb, that have some activity on thrips fully materialized with imidacloprid in select trials cotton prices versus commodities! With good thrips control via insecticide seed treatment is an excellent way control. As abamectin and thiodicarb, that have some activity on thrips below the ground per acre maturity... These pests are resistant to … thrips infestations and/or slow seedling growth will almost always delay maturity and make bug! 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