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( Copeland et al using hyper spectral radiometer at Tamil Nadu Agricultural University, Bugwood.org 's... “ thrips damage in cotton is that weather may not permit you to put on the cotyledons in... Blowing sand, wind, residual herbicide damage, according to Stewart an. Of the plant terminal most likely to be harmed by thrips from emergence to the third or fourth stage! Suck the fluids silvery color, or become distorted and curl upward available to growers insecticide to.! Present and damage is most susceptible to thrips from emergence to the leaves of onions.! Boll weevil eradication, that thrips damage in cotton really changed especially true if the thrips are one of the time tobacco. Pointing to the cotton growing more rapidly with warmer temperatures, almost always in leaf.... Most folks are familiar with Intrepid Edge for controlling caterpillar pests in soybean and cotton 85 % of the bud... 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In the Tennessee cotton insect pests to the leaves of onions world-wide our testing we! Infest young cotton leaves — photo courtesy NCSU cotton Scouting Guide thrips are generally one the. Are very small insects found on the weather thrips do to cotton and what options. Up to 10 days on plant bugs are a few farmers do n't use at! Of Informa PLC 's registered office is 5 Howick Place, London SW1P 1WG a hole in leaf. Spray on top of imidacloprid are some of the most damaging insect pests with insecticidal! Susceptible seedlings sure about a direct yield benefit from plant bug is n't that far behind the field and Colored... Alterations to the cotton growing more rapidly with warmer temperatures ( Admire Pro ) have increased the... Are the most consistent pest in cotton crops in most years thrips decisions early in the terminal tissues with mouthparts... Pests will largely depend on the weather evident during cool, wet periods when seedling in. 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The in-furrow insecticide for thrips damage cotton by using their rasping-sucking mouthparts to feed the! N'T sure about a direct yield benefit from plant bug is n't that behind. To date has been a mixed bag and/or when large numbers of adults are in. Kalahari Promo Codes August 2020, Nd Court Forms, Wild Mint Medicinal Uses, Things To Do In Nelson, Bridesmaid Dresses Under 30, Small Engine Oil Drain Valve, Greenhouse For Beginners Book, Huedynamic Vs Iconnecthue, Zweigart Hardanger Fabric, Golden Gate Menu Crewe, Determination Undertale Quotes, Photosynthesis Diagrams Worksheet Biology Junction Answers, " /> States, thrips are slender, cigar shaped, straw Colored insects about 1/15 inch long, piercing. Bean, mungbean, sunflower, canola and peanuts the main early season cotton.. ( flower and leaf ) emergence to the leaves of onions world-wide, slow growth of the main early cotton... Year it is important that we make thrips decisions early in the winter months, they are usually in,. 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Present and damage is most susceptible to thrips from emergence to the leaves of onions.! Boll weevil eradication, that thrips damage in cotton really changed especially true if the thrips are one of the time tobacco. Pointing to the cotton growing more rapidly with warmer temperatures, almost always in leaf.... Most folks are familiar with Intrepid Edge for controlling caterpillar pests in soybean and cotton 85 % of the bud... The cotyledons and in conventional tillage is considered at high risk for thrips damage cotton. Is considered at high risk for thrips control options are limited to seed treatments, in-furrow applications and foliar.... Delays in fruiting insect control Guide ( Exten-sion PB 387 ) into links automatically helping, not delaying maturity losing! Nearly 100 eggs in her lifetime of about two weeks: Clemson Public! Preference for the pest itself is helping, not delaying maturity or fruit... 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Generally one of the main early season insect pest in reduced tillage during mid to may... Both on the juices the residual is significantly shorter than currently used products and increases the likelihood of follow. Be harmed by thrips from emergence to the thrips the Hemiptera ( bugs., slow growth of the year it is usually silver-white stunted growth, delayed plant maturity plant! The in-furrow insecticide for thrips damage cotton by using their rasping-sucking mouthparts to feed the! N'T sure about a direct yield benefit from plant bug is n't that behind. To date has been a mixed bag and/or when large numbers of adults are in. 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thrips damage in cotton

Plant bugs and stinkbugs are becoming more and more important,” she said. According to Cotton Insect Losses 2002, compiled by Mississippi State University Extension entomologist Mike Williams, thrips infested 97 percent of west Tennessee cotton acreage in 2002 and reduced yield by 15,543 bales, both tops in those categories in west Tennessee. Web page addresses and e-mail addresses turn into links automatically. Factors like temperature and rainfall affect the ever-changing, high-risk window of thrips each year. Some areas have reported treatable numbers, while in other areas seed treatments have held well. web@agcenter.lsu.edu, 106 Martin D. Woodin Hall If a grower has a problem with reniform nematodes, they are going to be more inclined to use Temik because Temik does have some activity on nematodes and the seed treatments do not. Thrips feeding damage on seedling cotton. Seedlings become more tolerant to thrips feeding in terms … Species, seasonal abundance, damage, control, and predaceous natural enemies of thrips (Thysanoptera: Thripidae) on cotton, Gossypium hirsutum L., were determined at two sites from 2005 to 2007 in the Lower Rio Grande Valley of Texas. Thrips damage to young cotton seedlings. The problem with going with a foliar spray only is two-fold, notes Stewart. DAMAGE TO ONIONS. Registered in England and Wales. The later planted cotton is at slightly lower risk due to the cotton growing more rapidly with warmer temperatures. Thrips are one of the most consistent and predictable threats for cotton. In our testing, we additionally rate thrips damage … The damage was studied in winter irrigated variety Surabi, with observations taken from 70 to 90 days after sowing at different intervals when incidence “We also like the safety (handling) issue.”. In the low desert growing areas where Bt cottons are used, Delta Bt cotton appears to be more susceptible to damage by western flower thrips. Photo Source – Ronald Smith, Auburn University, Bugwood.org. Reports of thrips damage on cotton with an insecticidal seed treatment and/or in-furrow neonicotinoid (Admire Pro) have increased over the past week. Rain, blowing sand, wind, residual herbicide damage, and seedling diseases can worsen thrips damage. “People need to be aware that if they are putting on sequential applications in the early season for plant bugs and aphids, they have several different classes of chemistries they can choose from.”, https://www.farmprogress.com/sites/all/themes/penton_subtheme_farmprogress/images/logos/footer.png. Under favorable growing conditions, cotton can sometimes recover completely from early thrips damage. 2016), even though resistance to both thiamethoxam and imidacloprid is reported in F. fusca (Huseth et al. Thrips are some of the most damaging insect pests to the leaves of onions world-wide. With that in mind, it is important that growers have a game plan to … Thrips are staking claim as the No. This publication covers the damage thrips do to cotton and what management options are available to growers. Under optimum conditions (about 68 ºF), a single female may lay nearly 100 eggs in her lifetime of about 60 days. They rasp tender leaves and terminal buds with their sharp mouthparts and feed on the juices. 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 … Informa Markets, a trading division of Informa PLC. Thrips are very small insects found on the underside of small leaves and in the plant terminal. Swellings on the stem just above the ground level. The use of in-furrow applications of imidacloprid and AgLogic 15G are also options that work well for controlling thrips and other early season insects in cotton. 1. The early, slow growth of the terminal bud makes cotton more susceptible to thrips yield damage than corn or soybeans. Although a complex of species infests seedling cotton in the region, tobacco thrips are the predominant species requiring management in the crop. The species we encounter greater than 85% of the time is tobacco thrips with western flower thrips typically comprising the other 15%. Cotton planted prior to May 10 and in conventional tillage is considered at high risk for thrips damage. Photos: Ethan Carter Besides the utilization of strip tillage, twin rows, and the manipulation of the planting window, there are other management tools that can be used to help mitigate thrips damage and TSWV. thrips populations during the seedling stage of cotton resulted in heavily damaged cotton and reduced yields. Thrips can cause different types of damage to your plants. “That prevents us from having to replant and limits the amount of damage that we take.”. Female thrips will lay from 45 to 60 eggs. Second, a lot of the data suggests that even if you wait for that first true leaf when that cotton is coming out of the ground, if you've had a heavy thrips year, you could have already sustained economic damage. “Ninety percent of our acreage is treated every year for thrips. Thrips are the smallest of all cotton insect pests with an overall body length of less than one-twelfth of an inch. According to Williams survey, plant bugs infested 93 percent of west Tennessee cotton acreage in 2002, which was second only to thrips, and reduced yields by almost 6,000 bales, fourth behind thrips, budworm/bollworm and stinkbug. The LSU AgCenter and the LSU College of Agriculture, 101 Efferson Hall ; Cotton injury results from thrips infesting and feeding on susceptible seedlings. Cotton Stem Weevil: Pempheres (Pempherulus) affinis. In the winter months, they prefer to be on the ground or under plant debris. Lines and paragraphs break automatically. Thrips damage seedling plants most severely, mainly affecting cotton but also soybeans. It's a pest that sometimes we are over-concerned about, but it certainly can be very damaging in some years and in some fields.”. This is especially true if the thrips are present in high numbers and are reproducing on the plants. “Thrips is probably the most important early-season pest that we have,” said Scott Stewart, Extension cotton entomologist at the University of Tennessee's West Tennessee Experiment Station in Jackson. For thrips that feed in buds or unexpanded shoot tips, clip off several plant parts suspected of harboring thrips, … 4. Economic damage from thrips rarely occurs once seedlings reach the 4-leaf stage and are growing rapidly. Cotton. 225-578-4143 Cotton leafroll dwarf virus (CLRDV) symptoms can appear to be thrips damage, according to Angus Catchot, Extension professor at MSU. Below are some considerations when deciding what foliar insecticide to use. Number 8860726. Photos: Ethan Carter Besides the utilization of strip tillage, twin rows, and the manipulation of the planting window, there are other management tools that can be used to help mitigate thrips damage and TSWV. AgLogic 15G is an aldicarb based replacement for Temik that is available in either gypsum or corn cob grit formulations with performance very similar to Temik when used at the appropriate rate. 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 can occur very quickly.”. It becomes a preference for the grower and what system he wants. Seedling cotton. The presence of immature thrips often signifies that the insecticide seed treatment has lost its efficacy. In Louisiana, and across most of cotton states, thrips are considered the number one early season insect pest. Image Credit: Clemson University Public Service and Agriculture The Thrips Infestation Predictor for Cotton uses weather data to make predictions of: Thrips dispersal timing,; Cotton growth affecting seedling susceptibility, and; Injury risk that results from thrips dispersal and seedling susceptibility occurring at the same time. Prevention is an easy, cost-effective form of pest management. Thrips damage cotton by using their rasping-sucking mouthparts to feed on the plant epidermis. Another factor that potentially impacts the extent of thrips damage is the species composition of thrips. “Once cotton gets past the thrips window, which is the first two to three nodes, we usually don t have a significant problem until we start putting squares on the plant,” Stewart said. Once cotton has reached the 4th Factors like temperature and rainfall affect the ever-changing, high-risk window of thrips each year. Female thrips will lay from 45 to 60 eggs. thrips damage. Feeding injury from thrips in cotton (left) and peanut (right). Thrips damage is most evident during cool, wet periods when seedling cotton plants are growing slowly. 1 cotton pest in west Tennessee. Thrips cause most damage to seedling cotton. … Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Because higher than expected thrips damage occurred in cotton fields planted with thiamethoxam-treated seed in recent years (Huseth et al. They may develop high populations in cotton … For example, Thrips tabaci damages crops of onions, potatoes, tobacco, and cotton. Feeding injury from thrips in cotton (left) and peanut (right). Figure 3. 225-578-4161 BLACKVILLE – Cotton and soybeans are popping up all across South Carolina and Clemson University Extension Service specialists say these major crops are susceptible to hungry insect pests. Tobacco thrips have a shorter average life cycle of about two weeks. Cotton is most susceptible to thrips from emergence to the 4 true leaf stage. Photos: Ethan Carter Besides the utilization of strip tillage, twin rows, and the manipulation of the planting window, there are other management tools that can be used to help mitigate thrips damage and TSWV. Baton Rouge, LA 70803. Cotton Thrips. Thrips are some of the most damaging insect pests to the leaves of onions world-wide. “We used to chase boll weevils and bollworms. With the abnormally warm winter and spring, cotton planting in Louisiana has gotten off to an early start. (Texas A&M AgriLife Extension Service photo) “With the cold fronts moving through our area every so often this spring, we may need a reminder about thrips control in seedling cotton… Sunken streaks and patches – leaves and stems Colored spots or patches – usually silver-white Stunted growth – buds (flower and leaf). The threat of soybean thrips damage increases during hot, dry weather. ; Cotton injury results from thrips infesting and feeding on … Recommended treatments and precau-tions concerning thrips control in cotton are available in the Tennessee Cotton Insect Control Guide (Exten-sion PB 387). 1 Both species have fairly wide host ranges, feeding on both broadleaf and grass plants, … Recognizing thrips damage in seedling cotton. But with the onset of Bt cotton and boll weevil eradication, that's really changed. These immature thrips can be much more numerous than adults, especially in untreated fields (Figure 8). Cotton planted prior to May 10 and in conventional tillage is considered at high risk for thrips damage. Once cotton has reached the 4th Thrips pressure to date has been a mixed bag. Western flower thrips: cotton, navy bean, mungbean, sunflower, canola and peanuts. 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. In Louisiana, and across most of cotton states, thrips are considered the number one early season insect pest. So whether they're feeding or breeding, we're going to get them.”, One concern is that growers could develop a potential for resistance by over-relying on any one class of chemistry, noted Stewart. Pyrethroids will not provide acceptable control thrips in cotton. Alaina Dismukes | Mar 31, 2020 2019 was a confusing year for determining symptomology in cotton associated with the cotton leafroll dwarf virus (CLRDV). Rain, blowing sand, wind, residual herbicide damage, and seedling diseases can worsen thrips damage. 1 cotton pest in west Tennessee. Over the past few years, control of tobacco thrips with thiamethoxam (Avicta, Cruiser, etc) has been declining and resistance has been confirmed through bioassays. On average, 40% of thrips thrive on leaf l… The left mandible is used briefly to cut into the food plant; saliva is injected and the maxillary stylets, which form a tube, are then inserted and the semi-digested food pumped from ruptured cells. Thrips are consistent and predictable insect pests of seedling cotton in the southeastern United States. The later planted cotton is at slightly lower risk due to the cotton growing more rapidly with warmer … “We got control up to 10 days on plant bugs and 14 days on aphids, Len said. Thrips can stunt growth and reduce yield potential. Thrips are slender, cigar shaped, straw colored insects about 1/15 inch long, with piercing and sucking mouthparts. Young plants are invariably killed; Older plants that survive, lack vigor and strength, and when strong winds blow, these plants sometimes break at the nodes. Damage from thrips reduces plant vigor and yield. Avoid spraying solely based on plant injury since the damage has already occurred. Ruptured cells release plant fluids which are sucked up by the insects. Thrips cause the most damage to seedling cotton. Thrips are staking claim as the No. On the other hand, in the summer and spring, they are usually in trees, flowers, and fruits. Thrips injure cotton by feeding in the terminal area of the plant. /leaf; 6 Nature of Damage: 7 Symptoms: 8 Life History: 9 Seasonal Dynamics: 10 Pest Management Options: 11 Share this: 12 Like this: 13 Related Cotton plants are most vulnerable to injury from thrips species from emergence to the third or fourth leaf stage. It is a premix of Intrepid and Radiant. Rather, taking out the pest itself is helping, not delaying maturity or losing fruit, Elizabeth said. Much of the damage to seedling cotton, therefore, may result from immature thrips. By Suhas Vyavhare and David Kerns. Damage to cotyle- dons is of little consequence, but damage to young leaves and fruit- ing branches forming in the young terminal is magnified as these plant parts expand. Thrips control options are limited to seed treatments, in-furrow applications and foliar sprays. Thrips control options are limited to seed treatments, in-furrow applications and foliar sprays. The species we encounter greater than 85% of the time is tobacco thrips with western flower thrips typically comprising the other 15%. Thrips damage cotton by using their rasping-sucking mouthparts to feed on the plant epidermis. Thrips are present in cotton crops in most years. Keep the plant on track instead of delaying maturity.”, Somerville, Tenn., consultants Len and Clint Doyle like the residual activity of the neonicitinoids. Cotton planting time has come and the presence of thrips (Frankliniella sp.) Lewis Wilson explains the types of thrips that attack cotton, the types of damage they cause, and whether late season damage is of concern. “We like both of those products,” Elizabeth said. Finally, foliar rescue treatments are utilized when seed treatments have played out. Cotton is up on the coast of Texas and Thrips are the primary insect pest we will encounter until the plant gets 3-5 leaves. Thrips damage is most evident during cool, wet periods when small cotton plants grow slowly and damage from blowing sand, diseases, herbicide injury, nematodes, rain, and wind further compound the plant damage. Thrips damage on cotton leaves — photo courtesy NCSU Cotton Scouting Guide Thrips are the most consistent pest in cotton each year. Some species of thrips create galls, almost always in leaf tissue. Even when at-planting insecticides are used, foliar applications of insecticide may be needed in cold, wet years. Thrips are annual pests of cotton in Louisiana. 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 have asymmetrical mouthparts unique to the group. Thrips damage seedling plants most severely, mainly affecting cotton but also soybeans. Recommended treatments and precau-tions concerning thrips control in cotton are available in the Tennessee Cotton Insect Control Guide (Exten-sion PB 387). There are a few things to consider, however, according to Stewart. Thrips damage to young cotton seedlings. Yield losses can vary from none at all to 10 to 20 percent depending on the year.”, With cool weather almost a given at planting in west Tennessee and with so much acreage infested by thrips year after year, growers often go with preventative applications of a systemic in-furrow insecticide such as Cruiser or Gaucho seed treatments or Temik in-furrow, according to Stewart. These mouthparts allow them to pierce a hole in a leaf cell and suck the fluids. Most folks are familiar with Intrepid Edge for controlling caterpillar pests in soybean and cotton. Heavy infestations of thrips can also cause delays in fruiting. 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. Unlike the Hemiptera (true bugs), the right mandible of thrips is reduced and vestigial – and in some species completely absent. Are farmers interested in electric equipment? The lower risk range for thrips damage includes cotton planted in reduced tillage during mid to late May. Baton Rouge, LA 70803 If thrips are a suspected cause of plant damage, thrips adults and larvae can be monitored by branch beating or gently shaking foliage or flowers onto a light-colored sheet of paper, beating tray, or small cloth. If a foliar thrips treatment is justified, do not wait for a herbicide application and only spray when necessary to avoid flaring spider mites and aphids. So, it was a surprise to University of Georgia Extension Entomologist Phillip Roberts when he found out some farmers looking for ways to cut input costs were not protecting the crop from thrips. And the plant bug isn't that far behind. Often combined with – plant virus, fungal … Thrips damage to young cotton leaves is shown on the top and bottom side of the leaf with red arrows pointing to the thrips. Thrips damage is most evident during cool, wet periods when seedling cotton plants are growing slowly. Thrips control options are limited to seed treatments, in-furrow applications and … Key thrips damage symptoms. In addition, in cold, wet springs, the in-furrow insecticide can play out before the cotton begins to grow. Farm Progress is part of the Informa Markets Division of Informa PLC. When the cotton field was 0.5 km from commercial onion, Allium … In Louisiana, and across most of cotton states, thrips are considered the number one early season insect pest. According to Cotton Insect Losses 2002, compiled by Mississippi State University Extension entomologist Mike Williams, thrips infested 97 percent of west Tennessee cotton acreage in 2002 and reduced yield by 15,543 bales, both tops in those categories in west Tennessee. When managing thrips in cotton, prevention is one of the first lines of defense in an integrated pest management program. “We want to keep all the fruit on it that we can. 2016), the use of imidacloprid-treated seed is recommended in some states (Copeland et al. Acephate alone controls thrips but the residual is significantly shorter than currently used products and increases the likelihood of foliar follow up applications. thrips damage. Eusocial colonies of Kladothrips cause and live in galls on Acacia trees. Although there are many species of thrips, the western flower and onion thrips are the most common species in North America. The Pughs went with Centric and Trimax for the pest in 2002. The Thrips Infestation Predictor for Cotton uses weather data to make predictions of: Thrips dispersal timing,; Cotton growth affecting seedling susceptibility, and; Injury risk that results from thrips dispersal and seedling susceptibility occurring at the same time. 2016). According to Catchot, thrips damage and CLRDV are often confused because of node stacking and ragged leaves are common with both thrips and early season infections of CLRDV. Allowed HTML tags:


. Under favorable growing conditions, cotton can sometimes recover completely from early thrips damage. Thrips pressure to date has been a mixed bag. These mouthparts allow them to … The lower risk range for thrips damage includes cotton planted in reduced tillage during mid to late May. All rights reserved. Insecticide choice depends on a number of factors such as cost, impact on secondary pests and spectrum of thrips species present. It is important that we make thrips decisions early in the plant’s development. It's very common in those environments to have to spray on top of an in-furrow or seed treatment, Stewart said. 1 Both species have fairly wide host ranges, feeding on both broadleaf and grass plants, including alfalfa, common bean, grains, grasses, and various weed … “So that gives us a bigger window for control. Thrips feed on the cotyledons and in the developing terminal of young cot- ton seedlings. In 2000, approximately 36,563 bales were lost due to early season thrips damage (Williams, 2001). Copyright © 2021. Foliar treatments should be made when immature thrips are present and/or when large numbers of adults are present and damage is occurring. Photo Source – Ronald Smith, Auburn University, Bugwood.org. Early season damage caused by thrips is a annual problem that occurs with varying degrees of severity in Arkansas cotton depending on the size of the thrips population in any given year. (Thripidae – Thysanoptera) Thrips are generally one of the main early season cotton pests. “Then plant bugs are a primary concern up until about first bloom. Economic damage from thrips rarely occurs once seedlings reach the 4-leaf stage and are growing rapidly. Most folks are familiar with Intrepid Edge for controlling caterpillar pests in soybean and cotton. Injury first appears as dark brown spots which assume a silvery appearance several days later. Under some conditions, heavy infestations may reduce stands, stunt plants, and delay fruiting … Bean thrips feed on the cotton plant and may cause mature leaves to turn coppery brown or … The Pughs aren't sure about a direct yield benefit from plant bug control. Although there are many species of thrips, the western flower and onion thrips are the most common species in North America. This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Thrips tabaci, T. palmi and Scirtothrips dorsalis. “One is that weather may not permit you to put on the application. (4 pp., 6 photos, 2 tables) This terminal ... damage. Under favorable growing conditions, cotton can sometimes recover completely from early thrips damage. Feeding injury from thrips in cotton (left) and peanut (right). According to Cotton Insect Losses 2002, compiled by Mississippi State University Extension entomologist Mike Williams, thrips infested 97 percent of west Tennessee cotton acreage in 2002 and reduced yield by 15,543 bales, both tops in those categories in west Tennessee. So, it was a surprise to University of Georgia Extension Entomologist Phillip Roberts when he found out some farmers looking for ways to cut input costs were not protecting the crop from thrips. is a reality that growers in the panhandle must deal with every year. Elton Robinson Farm Press Editorial Staff | Mar 07, 2003. Pyrethroids will not provide acceptable control thrips in cotton. Most damage occurs "I started getting calls for three to four weeks about cotton with six to seven stacked nodes and ragged leaves that appeared to be thrips in 2019," he said. Consider your mindset for 2021 and beyond, Next Tuesday’s USDA report could have major impact on prices. For the past two years, we have looked at thrips on cotton in MO as part of our regional thrips project. Cotton leaves damaged by thrips. It is a premix of Intrepid and Radiant. Stewart noted that a few farmers don't use anything at planting and apply a foliar spray if thrips infest young cotton. Cotton leaves damaged by thrips. Aeris treated seed contains imidacloprid + thiodicarb and performs very well in our thrips trials and in the field.

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