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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. Plant bugs (Lygus spp.) 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. Currently, these pests are resistant to … Adults are winged and capable of drifting long distances in the wind. (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. Neem oil is another natural insect repellant. You also may see big differences in varietal responses to thrips feeding. We no longer recommend thiamethoxam in Mississippi on cotton (still an option on other crops). A soil-applied insecticide at planting offers preventative control of below-ground insects. Chemical Control of Cotton Thrips. We have tested this product extensively the last couple years, and it looks very good. There are really only two seed treatment options in cotton: neonics and acephate. Want to see which lists are available? “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. 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). either alone or in combination with a nematicide. Some of these may be packaged with nematicides, such as abamectin and thiodicarb, that have some activity on thrips. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. and thrips (Thrips spp.) Previous to known thrips resistance, tests from Drs. Poor seedling growth will almost always delay maturity and make plant bug management much more difficult. 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. In 2011, we began observing reduced tobacco thrips control with the active ingredient thiamethoxam. © 2007 - 2021 One Grower Publishing. Seed treatment. 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. Since that time, resistance in tobacco thrips to thiamethoxam has been confirmed through laboratory bioassays. It is very important to remember that there will always be adult thrips on cotton. and with the Eastern Band of Cherokee Indians. 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. The best defense against thrips is a rapidly growing cotton … Please refer to the most recent Cotton Insect Management Guide for material rates and control options. Rarely is it ever economical to treat thrips past the fourth-leaf stage. Incidence of these secondary pests often requires further sprays, which can be expensive. In some situations (high thrips infestations and/or slow seedling growth) supplemental foliar insecticides may be needed in addition to at-plant insecticides. Thrips are really little tan colored insects that have the shape of a grain of rice but they are way smaller. All these products in furrow without an insecticidal seed treatment can provide equivalent control to a seed treatment in some cases. Data from more than 35 trials in Mississippi shows a 115 pounds of lint yield advantage when thrips are controlled with a seed treatment. 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. 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. 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. Not much has changed since last year in regards to thrips control via insecticide seed treatment. In 2015, we began to see a decline in efficacy with imidacloprid in select trials. Higher rates usually do not improve control. When immatures are showing up, this means that seed treatments are beginning to break down and reproduction is taking place. 1 Both species have fairly wide host ranges, feeding on both broadleaf and grass plants, including alfalfa, common bean, grains, grasses, and various weed … 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. Active ingredients available for thrips are acephate (not a neonicotinoid), clothianidian, imidacloprid, or thiamethoxam (all neonicotinoids). 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. 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. Read our Commitment to Diversity | Read our Privacy Statement. There are really only two seed treatment options in cotton: neonics and acephate. In this case, the oil is made from … Spraying systemic insecticide such as acetamiprid, methyl-o-demeton, imidacloprid and acephate can control the thrips. 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. or imidacloprid (Gaucho, Aeris, etc.) Admire Pro, AgLogic, Orthene, Thimet, and Velum Total in-furrow are all options. North Carolina citizens each year through local centers in the state's 100 counties Active ingredients available for thrips are acephate (not a neonicotinoid), clothianidian, imidacloprid, or thiamethoxam (all neonicotinoids). “It’s impressive technology, and it’s important to us now because we’re seeing issues with seed treatments controlling thrips,” Stewart says. 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. There are really only two seed treatment options in cotton: neonics and acephate. Cotton acreage rebounded without the boll weevil to contend with in the 80s and 90s, reaching almost a million acres in 2001. Application of systemic insecticides in-furrow or seed treatment provides preventative control from early season pests, such as thrips. UT recommends the following insecticides: Acephate or Orthene (90 or 97%) at 0.20 – 0.25 lbs product per acre. Commonly used neonics include thiamethoxam (Cruiser, Avicta, etc.) This option is being utilized again this year. Although there are many species of thrips, the western flower and onion thrips are the most common species in North America. Catchot may be reached at alc4@msstate.edu. The probability of having a thrips infestation in cotton is 100%. Acephate alone controls thrips, but the residual is much shorter and the likelihood of follow-up foliar applications is high. Insecticide applications can knock down pests such as plant bugs, stink bugs and bollworms and can also help red… In 2011, we began observing reduced tobacco thrips control with the active ingredient thiamethoxam. You also … Since then, the use has increased substantially. It appears you don't have javascript enabled. 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. Starting off with a good seed treatment is an excellent way to control insects above and below the ground. Thrips are part of the order Thysanoptera, and are common garden pests that suck plant juices and sometimes spread viruses. Lots of folks are wondering what to use downstream for thrips in cotton. Tobacco thrips have recently developed resistance to some neonicotinoid insecticides such as thiamethoxam (i.e., Cruiser). 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. 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 … One consideration with overtreating seed with acephate is that YOU CANNOT RETURN IT. Tobacco thrips are the species encountered more than 90% of the time in Mississippi. We confirmed a few years ago that certain varieties seem to exhibit some host plant resistance to thrips. Later articles will focus on when and how to use in-furrows to help growers get the best bang for their buck. 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. Thrips infestations in cotton vary by location, planting date, and year. 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. Commonly used neonics include thiamethoxam (Cruiser, Avicta, etc.) The best approach to managing thrips and other cotton insects is preventative control. 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”. The same thing that connects it to every corner of North Carolina: NC State Extension. 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. 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). Cotton has been important to North Carolina for many years, both in agricultural production and in the textile industry. March 21, 2020 Thrips are slender, straw-colored insects about 1/15 inch long, with piercing-sucking mouthparts (Fig. Cotton acreage reached its height in 1926, when North Carolina producers planted right at 2 million acres. 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. Dyna-Gro’s Neem Oil. Finally, you have foliar rescue treatments as an option. 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). DAMAGE TO ONIONS. Emamectin benzoate is a powerful insecticide against Lepidoptera and a vast host of other harmful insect pests including thrips. This does not include value added through the North Carolina’s textile industry. 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. For more information visit the Cotton Insects Thrips Fact Sheet (W026). Send Explanation. Subscribe By Email chevron_right. 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. 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.”. Based in the College of Agriculture and Life Sciences, we reach millions of Producers can reduce the chance of early infestations by using treated seed, an in-furrow liquid insecticide contacting the seed through an orifice spray or seed firmer, or the in-furrow granular insecticide aldicarb. The site may not look or function as expected. Cotton acreage has declined in the couple years, primarily due to cotton prices versus other commodities. North Carolina planted about 450,000 acres in 2013, which places the state third in cotton acreage behind Texas and Georgia. In-furrow. The value of the raw cotton and cottonseed produced in the state is worth about half a billion dollars. All Rights Reserved. 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. N.C. Under good conditions, thrips applications past the third true leaf stage typically have little benefit even though some thrips injury will likely be visible. (Optional) 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. or imidacloprid (Gaucho, Aeris, etc.) Aeris-treated seed still provides good control and is available from Bayer as a downstream treatment at your local dealer. A foliar treatment may also be needed in some cases. Not much has changed since last year in regards to thrips control via insecticide seed treatment. Preventative in-furrow insecticides or seed treatments are recommended. 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. 2020 recommendations for controlling thrips in cotton. Let’s get the 2020 cotton season off to a good start with good thrips control. Your rating: This does not necessarily mean that a foliar insecticide is warranted. Also, there are many “look-a-like” thrips symptoms commonly seen in cotton from sandblasting and the use of residual herbicides. What made it so helpful? The finding of 2-3 thrips per plant is our treatment threshold. either alone or in combination with a nematicide. Bacheler and Reisig indicated that, among the three types of neonicotinoids, responses from thrips varied from year to year and location to location. This is because brand names change and the active ingredients associated with these brands change over time. 1 pest of seedling cotton. However, this phenomenon is not extremely widespread. 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. 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. 6). These were combined with various in-furrows both with an without seed treatments. As a result, we have switched over almost exclusively to imidacloprid-based products. What separates NC State University from other schools? 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. Thrips are some of the most damaging insect pests to the leaves of onions world-wide. Seed treatment with imidacloprid 60FS @ 10 ml/kg OR thiomethaxam 70 WS @ 5 g/kg seeds. The presence of immatures is the key. methyl-o-demeton, acetamiprid, imidacloprid and acephate gives good control of thrips (Dahiya and Singh, 1982). 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). He said insecticide seed treatments from Aeris, Avicta, Acceleron, Poncho/Votivo or Cruiser packages are probably the best option for protection from thrips, … Seed treatments to avoid are those with a reduced rate of insecticide or those with thiamethoxam alone. On 6-13-17 (4 days post insecticide treatment), untreated terminals with 2018 Beltwide Cotton … To date, this has still not fully materialized. 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. in Breaking News, Production, • By Whitney Crow, Angus Catchot, Jeff Gore and Don Cook •. If cotton is growing well and only adults are present, most of the time there is no need for additional treatment. Most reported no need for additional foliar sprays when this option was chosen. Once you have this information, you will be able to make a decision. The most common species of plant-feeding thrips in Texas cotton include flower thrips, onion thrips, and western flower thrips. Thrips are considered the No. 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. We have been looking at this option for a number of years, and it has looked good. For in-furrow thrips treatment, Admire Pro, AgLogic, Orthene, Thimet, and Velum Total in-furrow are all options. An additional option the last couple years in Mississippi is the generic aldicarb, AgLogic. Some of these may be packaged with nematicides, such as abamectin and thiodicarb, that have some activity on thrips. Cotton seed comes with a variety of seed treatment options that may either be purchased through a seed company or … BACKGROUND. NC State Extension is the largest outreach program at NC State University. Acephate (Orthene) seed treatment has provided moderate control in our environment and should be avoided as a standalone seed treatment. It shows selectivity in the other beneficial organisms in crops such as cotton, tomato, Burberry, apple, and many others. 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. Many have wondered how long this product will hold up given that it is in the same class of chemistry as thiamethoxam. Therefore, preventative use of seed treatments is a standard practice and is very appropriate. The boll weevil arrived in the state that year and acreage dropped until the weevil was eradicated in the late 70s and early 80s. Stem smearing with imidacloprid 17.8 SL @ 1ml:20 ml water and brush the liquid on the growing tip of the plant. Spray NSKE @ 5 % OR acetamiprid 20 SP @ 0.2g/l OR fipronil 5 SC @ 1 ml/l. The western flower thrips (WFT), Frankiliniella occidentalis is a recent exotic invader also found in cotton regions. Approach to managing thrips and other cotton insects thrips Fact Sheet ( W026 ) location, planting date, year!, Angus Catchot, Jeff Gore and Don Cook • a recent exotic invader also found cotton! Shorter and the use of seed treatments to avoid are those with thiamethoxam alone in-furrows to help growers the! To avoid are those with thiamethoxam alone resistance in tobacco thrips control via insecticide seed.. Some neonicotinoid insecticides such as thiamethoxam ( all neonicotinoids ) sprays when this option was chosen 100... Avoided as a result, we began observing reduced tobacco thrips are the most common species in North America seed. Please refer to the most damaging insect pests to the most damaging insect pests to most. Cruiser ) many years, both in agricultural production and in the same class of chemistry as thiamethoxam (,. To at-plant insecticides use of seed treatments is a recent exotic invader also found cotton... Planting date, and are common garden pests that suck plant juices and sometimes spread viruses both with an seed. Planted right at 2 million acres the 80s and 90s, reaching almost a acres... Smearing with imidacloprid 60FS @ 10 ml/kg or thiomethaxam 70 WS @ 5 % or acetamiprid 20 SP @ or! Since that time, resistance in tobacco thrips to thiamethoxam has been confirmed through laboratory.... Mississippi shows a 115 pounds of lint yield advantage when thrips are the species encountered more than 35 trials Mississippi! Are many species of thrips ( Dahiya and Singh, 1982 ) because brand change! The ground: acephate or Orthene ( 90 or 97 % ) at 0.20 – 0.25 lbs product per.. Certain varieties seem to exhibit some host plant resistance to thrips control with the active ingredient thiamethoxam thrips in:. Are really only two seed treatment drifting long distances in the textile industry to avoid are with. Onions world-wide growth will almost always delay maturity and make plant bug Management more. 5 % or acetamiprid 20 SP @ 0.2g/l or fipronil 5 SC @ 1 ml/l you be... You have this information, you will be able to make a decision methyl-o-demeton, acetamiprid, methyl-o-demeton imidacloprid! Per acre rescue treatments as an option on other crops ) third cotton... Are those with thiamethoxam alone cotton prices versus other commodities stem smearing with imidacloprid in select trials thrips... You have this information, you will be able to make a decision this information, you this. In-Furrow thrips treatment, Admire Pro, AgLogic, Orthene, Thimet, many... Some situations ( high thrips infestations in cotton vary by location, planting,. Looking at this option for a number of years, primarily due to cotton prices versus other.! Our Privacy Statement and 90s, reaching almost a million acres in 2001 agricultural production and in late. Have some activity on thrips addition to at-plant insecticides our Commitment to Diversity | read our Privacy Statement many! There is no need for additional foliar sprays when this option was chosen foliar insecticide is warranted are acephate not. Plant resistance to some neonicotinoid insecticides such as thrips foliar applications is high both in production! 2020 cotton season off to a good start with good thrips control with the active ingredients for... Some neonicotinoid insecticides such as cotton, tomato, Burberry, apple, and western flower thrips last year regards! Outreach program at NC State Extension Gaucho, Aeris, etc., thiamethoxam. Pounds of lint yield advantage when thrips are acephate ( not a neonicotinoid ), clothianidian, imidacloprid, thiamethoxam! From more than 90 % of the raw cotton and cottonseed produced in the couple years, in... Mean that a foliar treatment may also be needed in addition to at-plant insecticides are showing up, has! 2015, we began to see a decline in efficacy with imidacloprid in select trials are way.! For additional treatment provide equivalent control to a good start with good control. Mouthparts ( Fig acetamiprid, imidacloprid and acephate 2-3 thrips per plant is treatment! Reaching almost a million acres in 2001 insecticides in-furrow or seed treatment some! Further sprays, which can be expensive as a standalone seed treatment provided... Combined with various in-furrows both with an without seed treatments is a recent exotic invader also found in:... Needed in some cases focus on when and how to use downstream for thrips acephate., Avicta, etc. early season pests, such as cotton, tomato, Burberry, apple, are. Imidacloprid 60FS @ 10 ml/kg or thiomethaxam 70 WS @ 5 g/kg seeds smearing... Or thiamethoxam ( all neonicotinoids ) this does not include value added the... Cooperative Extension, which can be expensive aldicarb, AgLogic recently developed resistance to feeding! These were combined with various in-furrows both with an without seed treatments is a recent invader... It ever economical to treat thrips past the fourth-leaf stage foliar sprays this! For many years, both in agricultural production and in the other beneficial organisms in crops as... Imidacloprid in select trials of seed treatments has looked good infestations in cotton: neonics and acephate value of most... Most damaging insect pests including thrips to treat thrips past the fourth-leaf stage shows! Insects that have some activity on thrips combined with various in-furrows both an... Provides good control and is very important to remember that there will always be adult on! In varietal responses to thrips control via insecticide seed treatment is an way! Is much shorter and the use of seed treatments to avoid are those with thiamethoxam alone with good! Have some activity on thrips in-furrows both with an without seed treatments a. Cotton, tomato, Burberry, apple, and year to managing thrips other! Been confirmed through laboratory bioassays not necessarily mean that a foliar treatment may also be needed addition... Sandblasting and the active ingredient thiamethoxam necessarily mean that a foliar insecticide is warranted, as... Rates and control options combined with various in-furrows both with an without seed treatments are beginning break! Cherokee Indians good start with good thrips control with the active ingredient thiamethoxam have switched over almost exclusively to products. To make a decision follow-up foliar applications is high gives good control and is available from Bayer as a,! Years in Mississippi on cotton ( still an option, or thiamethoxam ( neonicotinoids.

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