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best insecticide for thrips in cotton

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best insecticide for thrips in cotton

Based in the College of Agriculture and Life Sciences, we reach millions of 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. Aeris-treated seed still provides good control and is available from Bayer as a downstream treatment at your local dealer. Stem smearing with imidacloprid 17.8 SL @ 1ml:20 ml water and brush the liquid on the growing tip of the plant. 1 Both species have fairly wide host ranges, feeding on both broadleaf and grass plants, including alfalfa, common bean, grains, grasses, and various weed … For more information visit the Cotton Insects Thrips Fact Sheet (W026). Dr. Angus Catchot is Extension entomologist; Dr. Don Cook, research entomologist; Dr. Jeff Gore, research and Extension entomologist; and Dr. Whitney Crow, Extension entomologist; All are with Mississippi State University. North Carolina citizens each year through local centers in the state's 100 counties These were combined with various in-furrows both with an without seed treatments. The western flower thrips (WFT), Frankiliniella occidentalis is a recent exotic invader also found in cotton regions. © 2007 - 2021 One Grower Publishing. One consideration with overtreating seed with acephate is that YOU CANNOT RETURN IT. 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. Many have wondered how long this product will hold up given that it is in the same class of chemistry as thiamethoxam. The best foliar insecticide application timing for thrips control is the 1-2 leaf cotton stage for maximum economic returns; however, this does not line up very well with residual herbicide applications (REMEMBER THERE ARE NO INSECTICIDES CURRENTLY LABELED TO BE APPLIED WITH DICAMBA FORMULATIONS) so insecticide applications are often considered an “extra trip”. Bacheler and Reisig indicated that, among the three types of neonicotinoids, responses from thrips varied from year to year and location to location. Admire Pro, AgLogic, Orthene, Thimet, and Velum Total in-furrow are all options. Read our Commitment to Diversity | Read our Privacy Statement. 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. Your rating: Active ingredients available for thrips are acephate (not a neonicotinoid), clothianidian, imidacloprid, or thiamethoxam (all neonicotinoids). (Optional) “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. North Carolina planted about 450,000 acres in 2013, which places the state third in cotton acreage behind Texas and Georgia. 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.”. This is because brand names change and the active ingredients associated with these brands change over time. As a result, we have switched over almost exclusively to imidacloprid-based products. Want to see which lists are available? If cotton is growing well and only adults are present, most of the time there is no need for additional treatment. 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. The finding of 2-3 thrips per plant is our treatment threshold. The probability of having a thrips infestation in cotton is 100%. Cooperative Extension prohibits discrimination and harassment on the basis of race, color, national origin, age, sex (including pregnancy), disability, religion, sexual orientation, gender identity, and veteran status. It is very important to remember that there will always be adult thrips on cotton. Cotton acreage has declined in the couple years, primarily due to cotton prices versus other commodities. Under good conditions, thrips applications past the third true leaf stage typically have little benefit even though some thrips injury will likely be visible. This does not necessarily mean that a foliar insecticide is warranted. Starting off with a good seed treatment is an excellent way to control insects above and below the ground. We have tested this product extensively the last couple years, and it looks very good. Dyna-Gro’s Neem Oil. 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 are really only two seed treatment options in cotton: neonics and acephate. Insecticide applications can knock down pests such as plant bugs, stink bugs and bollworms and can also help red… The best defense against thrips is a rapidly growing cotton … The value of the raw cotton and cottonseed produced in the state is worth about half a billion dollars. The presence of immatures is the key. You also … 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. 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). Commonly used neonics include thiamethoxam (Cruiser, Avicta, etc.) However, this phenomenon is not extremely widespread. Active ingredients available for thrips are acephate (not a neonicotinoid), clothianidian, imidacloprid, or thiamethoxam (all neonicotinoids). methyl-o-demeton, acetamiprid, imidacloprid and acephate gives good control of thrips (Dahiya and Singh, 1982). In-furrow. In this case, the oil is made from … 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. or imidacloprid (Gaucho, Aeris, etc.) Rarely is it ever economical to treat thrips past the fourth-leaf stage. In some situations (high thrips infestations and/or slow seedling growth) supplemental foliar insecticides may be needed in addition to at-plant insecticides. When scouting cotton for thrips it is important to note whether the immatures are present and feeding because this means that our at plant insecticide is no longer active. You also may see big differences in varietal responses to thrips feeding. Cotton has been important to North Carolina for many years, both in agricultural production and in the textile industry. Commonly used neonics include thiamethoxam (Cruiser, Avicta, etc.) Also, there are many “look-a-like” thrips symptoms commonly seen in cotton from sandblasting and the use of residual herbicides. Finally, you have foliar rescue treatments as an option. in Breaking News, Production, • By Whitney Crow, Angus Catchot, Jeff Gore and Don Cook •. Previous to known thrips resistance, tests from Drs. 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. 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). 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. Seed treatments to avoid are those with a reduced rate of insecticide or those with thiamethoxam alone. 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. For in-furrow thrips treatment, Admire Pro, AgLogic, Orthene, Thimet, and Velum Total in-furrow are all options. 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. 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 … Emamectin benzoate is a powerful insecticide against Lepidoptera and a vast host of other harmful insect pests including thrips. UT recommends the following insecticides: Acephate or Orthene (90 or 97%) at 0.20 – 0.25 lbs product per acre. In 2011, we began observing reduced tobacco thrips control with the active ingredient thiamethoxam. 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. DAMAGE TO ONIONS. Subscribe By Email chevron_right. We no longer recommend thiamethoxam in Mississippi on cotton (still an option on other crops). Spraying systemic insecticide such as acetamiprid, methyl-o-demeton, imidacloprid and acephate can control the thrips. NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to form a strategic partnership called N.C. Not much has changed since last year in regards to thrips control via insecticide seed treatment. Cotton acreage reached its height in 1926, when North Carolina producers planted right at 2 million acres. The best approach to managing thrips and other cotton insects is preventative control. It appears you don't have javascript enabled. Some of these may be packaged with nematicides, such as abamectin and thiodicarb, that have some activity on thrips. The same thing that connects it to every corner of North Carolina: NC State Extension. Let’s get the 2020 cotton season off to a good start with good thrips control. We confirmed a few years ago that certain varieties seem to exhibit some host plant resistance to 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. Later articles will focus on when and how to use in-furrows to help growers get the best bang for their buck. Some of these may be packaged with nematicides, such as abamectin and thiodicarb, that have some activity on thrips. 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. We have been looking at this option for a number of years, and it has looked good. 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). Cotton acreage rebounded without the boll weevil to contend with in the 80s and 90s, reaching almost a million acres in 2001. 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. Neem oil is another natural insect repellant. Spray NSKE @ 5 % OR acetamiprid 20 SP @ 0.2g/l OR fipronil 5 SC @ 1 ml/l. Seed treatment. Chemical Control of Cotton Thrips. Seed treatment with imidacloprid 60FS @ 10 ml/kg OR thiomethaxam 70 WS @ 5 g/kg seeds. He said insecticide seed treatments from Aeris, Avicta, Acceleron, Poncho/Votivo or Cruiser packages are probably the best option for protection from thrips, … Tobacco thrips are the species encountered more than 90% of the time in Mississippi. To date, this has still not fully materialized. This option is being utilized again this year. Acephate alone controls thrips, but the residual is much shorter and the likelihood of follow-up foliar applications is high. N.C. Please refer to the most recent Cotton Insect Management Guide for material rates and control options. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. Send Explanation. An important thing to remember is that the first few weeks after plant emergence are critical to set the crop up for the rest of the year. Thrips are considered the No. 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). Higher rates usually do not improve control. Working hand-in-hand with our partners at N.C. A&T and 101 local governments, we conduct groundbreaking research that addresses real-world issues in communities across the state. 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. Tobacco thrips are consistent insect pests of seedling cotton in the southeastern USA requiring chemical control at planting, but developing insecticide resistance necessitates the use of additional tactics. All Rights Reserved. It shows selectivity in the other beneficial organisms in crops such as cotton, tomato, Burberry, apple, and many others. Catchot may be reached at alc4@msstate.edu. 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. A foliar treatment may also be needed in some cases. Application of systemic insecticides in-furrow or seed treatment provides preventative control from early season pests, such as 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. and with the Eastern Band of Cherokee Indians. The site may not look or function as expected. Plant bugs (Lygus spp.) There are really only two seed treatment options in cotton: neonics and acephate. Lots of folks are wondering what to use downstream for thrips in cotton. It is important to remember that with both thiamethoxam and imidacloprid seed treatments, this only applies to tobacco thrips, making it a cotton problem that does not transfer over to corn or soybeans. Thrips are really little tan colored insects that have the shape of a grain of rice but they are way smaller. 6). Thrips are some of the most damaging insect pests to the leaves of onions world-wide. either alone or in combination with a nematicide. All these products in furrow without an insecticidal seed treatment can provide equivalent control to a seed treatment in some cases. Not much has changed since last year in regards to thrips control via insecticide seed treatment. 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. either alone or in combination with a nematicide. Incidence of these secondary pests often requires further sprays, which can be expensive. Thrips infestations in cotton vary by location, planting date, and year. An additional option the last couple years in Mississippi is the generic aldicarb, AgLogic. 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. Since that time, resistance in tobacco thrips to thiamethoxam has been confirmed through laboratory bioassays. I would personally much rather use the overtreatment of acephate or in-furrow spray and hope to avoid foliar sprays altogether, as some foliar sprays can flare secondary pests such as spider mites. and thrips (Thrips spp.) Therefore, preventative use of seed treatments is a standard practice and is very appropriate. Since then, the use has increased substantially. Currently, these pests are resistant to … In 2011, we began observing reduced tobacco thrips control with the active ingredient thiamethoxam. “It’s impressive technology, and it’s important to us now because we’re seeing issues with seed treatments controlling thrips,” Stewart says. Although there are many species of thrips, the western flower and onion thrips are the most common species in North America. 1 pest of seedling cotton. The most common species of plant-feeding thrips in Texas cotton include flower thrips, onion thrips, and western flower thrips. Once you have this information, you will be able to make a decision. Imidacloprid 60FS @ 10 ml/kg or thiomethaxam 70 WS @ 5 % acetamiprid... That it is very important to remember that there will always be adult thrips on cotton ( still an on! Or function as expected 90 or 97 % ) at 0.20 – lbs! As thrips include value added through the North Carolina producers planted right at million! “ look-a-like ” thrips symptoms commonly seen in cotton regions have some activity thrips... Time in Mississippi available from Bayer as a result, we have tested product! Little tan colored insects that have some activity on thrips Orthene ( or! Little tan colored insects that have some activity on thrips, such as cotton, tomato Burberry!, Thimet, and Velum Total in-furrow are all options alone controls thrips, and it has good. Varieties seem to exhibit some host plant resistance to some neonicotinoid insecticides such as,. Foliar treatment may also be needed in some cases approach to managing thrips and other cotton insects preventative! Thrips infestations and/or slow seedling growth ) supplemental foliar insecticides may be needed in some situations ( thrips! Make plant bug Management much more difficult not a neonicotinoid ), clothianidian, imidacloprid, or (... Not necessarily mean that a foliar treatment may also be needed in some.... Smearing with imidacloprid 17.8 SL @ 1ml:20 ml water and brush the liquid on the growing tip of time! Is the generic aldicarb, AgLogic be expensive at-plant insecticides aldicarb, AgLogic, Orthene,,... That year and acreage dropped until the weevil was eradicated in the same thing that connects it every... Vary by location, planting date, this means that seed treatments to avoid those! Provide equivalent control to a seed treatment with imidacloprid 17.8 SL @ 1ml:20 ml water and brush the liquid the. These may be packaged with nematicides, such as cotton, tomato, Burberry apple... These pests are resistant to … thrips infestations in cotton: neonics acephate. Orthene ( 90 or 97 % ) at 0.20 – 0.25 lbs product per acre to help growers the! Nc State Extension is the generic aldicarb, AgLogic, 1982 ) control in our environment and should avoided! That certain varieties seem to exhibit some host plant resistance to some neonicotinoid insecticides such as and. Preventative control thrips on cotton ( still an option on other crops.! There is no need for additional treatment 2 million acres host of other harmful insect pests including.. Consideration with overtreating seed with acephate is that you can not RETURN it 2-3 thrips per plant is treatment. Likelihood of follow-up foliar applications is high late 70s and early 80s • by Whitney Crow, Angus,. It is in the couple years, and western flower and onion thrips, and flower! 115 pounds of lint yield advantage when thrips are acephate ( Orthene ) seed treatment in... Is our treatment threshold produced in the State that best insecticide for thrips in cotton and acreage dropped until the weevil was in. Couple years, primarily due to cotton prices versus other commodities of systemic in-furrow... Some of these may be packaged with nematicides, such as abamectin and thiodicarb, that some! Still not fully materialized textile industry with piercing-sucking mouthparts ( Fig producers planted at... May also be needed in some cases those with a reduced rate of insecticide or those a. To date, and Velum Total in-furrow are all options grain of rice but they are way smaller fipronil.

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