Zareh N. Evaluation of six cotton cultivars for their resistance to thrips and leafhoppers. Although a complex of species infests seedling cotton in the region, tobacco thrips are the predominant species requiring management in the crop. Díaz Desani BM, Fereres A. Ultraviolet-blocking materials as a physical barrier to control insect pests and plant pathogens in protected crops. Skip-row plant spacing does not influence the abundance of thrips in seedling cotton.29 However, within-row plant spacing might have an impact, with decreasing numbers of thrips reported with an increase in plant spacing in cotton30 and onions31 (another crop susceptible to thrips injury). They also superficially resemble some other thrips species that, if mistaken, may result in poor control because the insecticides selected may not be efficient against chilli thrips. Larvae rese… 2013;17(3):163–169. Jeremy K. Greene, PhD, Professor of Entomology, Research and Extension Field Crop Entomologist, Agronomy Program Team, Plant and Environmental Sciences, Edisto Research and Education CenterFrancis P. F. Reay-Jones, PhD - Professor of Entomology & IPM Coordinator, Research and Extension Field Crop Entomologist, Agronomy Program Team, Plant and Environmental Sciences, Pee Dee Research and Education CenterSophia Conzemius, Clemson University, Plant and Environmental Sciences Graduate Student. Manipulations of predaceous arthropods are expensive, and ratios of costs to benefits regularly preclude the effective use of introducing or augmenting predators of thrips on cotton.38 Despite some natural enemies of thrips in seedling cotton, deliberate modification of beneficial organisms is not currently a practical strategy for managing thrips in the crop. Insecticides were tested for the control of thrips on cotton at 3 sites in Arkansas during 1999. Thrips tabaci, T. palmi and Scirtothrips dorsalis. However, western flower thrips is regarded to be a 'pesticide-induced problem', having developed resistance to pesticides from different chemical classes. Apply chemical pesticides only if pest population crosses the ETL. Rummel DR, Quisenberry JE. Background: Plant bugs (Lygus spp.) Heavy residue can be achieved by incorporating a winter cover crop into the rotation as well as reducing tillage.25,26 Cover crops have been adopted because of numerous other benefits, including suppressed weed pressure,27 conserved soil moisture,28 and reduced nematode injury.28 Sanitation (also known as clean culture) is commonly used as a cultural control technique for numerous insect pests, but bare soil (without any plant residue) promotes higher populations of thrips and does not decrease thrips injury on young cotton plants. Harding JA. Watts JG. Foliar insecticide applications are often required to control thrips in cotton as the plant continues to grow, representing a shift to reactive control rather than preventative. Bionomics of Cotton Thrips: A Review, pp. Toler HD, Augé RM, Benelli V, Allen FL, Ashworth AJ. What other chemical we can use that is no threatening to mammals including us? Across most of the Cotton Belt, thrips are considered the number one pest of seedling cotton. Entomol. % 쏢 Clean cultivation and destruction of crop residues (fallen leaves, twigs etc.) Thus, seed or foliar‐applied chemical insecticides are typically required to protect cotton from these pest groups. 2020 Oct;2:T15. Chemical Control and Action Thresholds. However, since the establishment of western flower thrips (WFT), Frankliniella occidentalis, in Western Australia in 1993, this has become the more important pest in strawberries. Not much has changed since last year in regards to thrips control via insecticide seed treatment. Patrick R. Shepard | Mar 30, 2018. More training and licensing needed for any application. 2019 Mar;112(2):699–707. IRAC International MoA Working Group. Base the decision to apply an insecticide on the number of thrips present and the stage of plant development. Cook D, Herbert A, Akin DS, Reed J. Adult females (macropterous, left; brachypterous, right) of tobacco thrips. Pesticides are often used to control western flower thrips (Frankliniella occidentalis) in horticultural crops. Pest Technology.1(2):85–95. All thrips inhabit secluded areas on plants, such as unopened flower and terminal buds, which reduces exposure to insecticide applications. Stewart S D, Akin DS, Reed, J, Bacheler J, Catchot A, Cook D, Gore J, Greene JK, Herbert A, Jackson RE, Kerns DL, Leonard BR, Lorenz GM, Micinski S, Reisig D, Roberts P, Studebaker G, Tindall K, Toews M. Survey of thrips species infesting cotton across the southern US Cotton Belt. ), Thrips Biol. Greene JK, Reay-Jones FPF, Conzemius S. Best Management Practices for Thrips (Thysanoptera: Thripidae) in Cotton. h޼��n�:�_E�-�L��%`�6Kl���� �/�DK 8v`�X��#%;��Y{q��H��(~J�!�pƈQ 8�JA�@)��P�&���0�AH������(�����O�����*�����*�.�$�.8(a,\8?V.�w^4�2�]J�M�c��ǰ����������pO�i|M�G&h���C Thank you Raymond.Good … Herbert A, Reisig D, Huseth A, Kennedy G, Greene J, Reay-Jones FPF, Roberts P, Toews M, Jacobson A, Smith R, Reed T. Managing thrips in cotton: research in the southeast region, ENTO-182NP, Virginia Cooperative Extension, 13 p. Cultural Control. Akbar W, Gowda A, Ahrens JE, Stelzer JW, Brown RS, Bollman SL, Greenplate JT, Gore J, Catchot AL, Lorenz G, Stewart SD. New Chemical Control Option for Thrips and Whitefly. Chemical Control and … Toews MD, Tubbs RS, Wann DQ, Sullivan D. Thrips (Thysanoptera: Thripidae) mitigation in seedling cotton using strip tillage and winter cover crops. Journal of the American Society for Horticultural Science. Blue traps are best when beneficial insects are already present. 2017 Jan;162(1):30–40. J. Marshall MW, Williams P, Nafchi AM, Maja JM, Payero J, Mueller J, Khalilian A. Registered under the trade name AgLogic 15G, this new product is expected to equal Temik. New York (NY): Springer US; 1995. Image credit: Jeremy Greene, Clemson University. Tobacco thrips can be identified using genetic techniques3 or by visual characteristics using a microscope.3,5 As adults, tobacco thrips have large, fully functioning (macropterous) or rudimentary (brachypterous) wings and bodies about 1 to 2 mm in length that can be dark brown or tan (figures 2 and 3). Any reference made from this publication must use the provided citation. and thrips (Thrips spp.) The species composition of adult thrips varied among all locations which included trials within Arkansas p. 61–70. Historically, the plague thrips, Thrips imaginis, was considered to be the main thrips pest of strawberries. In older cotton, thrips are sometimes … All thrips inhabit secluded areas on plants, such as unopened flower and terminal buds, which reduces exposure to insecticide applications. Preventive in-furrow or seed treatments usually provide adequate thrips control until the second true-leaf stage. Reply. As cotton grows, insecticides applied at planting become diluted and are metabolized into derivatives in plants and lose effectiveness. Control plant bugs, thrips in cotton. Euphytica. A better way to sample thrips is to place randomly collected flower blossoms into a glass container with several drops of either ethyl acetate or methyl isobutyl ketone (or with a small amount of either of these chemicals soaked into cotton or other absorbent … Hose down resilient plants with high-pressure water, focusing on the bottom/underside of the leaves. The role of morphological and chemical plant traits imparting resistance in Bt cotton genotypes against thrips. Members of the Thysanoptera order, the term 'thrips' includes more than 6,000 species. in this video you will know about the best available chemicals to control most dangerous pest of cotton crop. Aphids in preblooming cotton, from emergence to first bloom, rarely develop to economically damaging levels, and many insecticidal seed treatments can affect aphids for up to 30 days after planting. This new tool can also be used to organize fields by risk, allowing for variable scouting efforts and control options based on the intended planting date. NC State Extension Research Specialist Dr. Dominic Reisig addresses thrips control in cotton as a part of the CHROME Regional Ag Expo. This preventative, at-plant strategy for chemically controlling thrips on seedling cotton (figure 6) has worked well for decades, but some resistance to insecticides, specifically the widely used neonicotinoids, has been reported.12. Mississippi State (MS): Mississippi State University; 2006 Bulletin 1156. Tobacco thrips are the species that are encountered more than 90% of the time in Mississippi. 1995 Feb;24(1):58-67. A comparison of the life cycles of, Chappell TM, Ward RV, DePolt KT, Roberts PM, Greene JK, Kennedy GG. Chemical control of thrips is difficult because thrips tend to hide in flowers and buds, they have a rapid life cycle with a high reproductive rate, they have a wide host range including many weed species, and there is widespread resistance to numerous chemical control products. Image credit: Sophia Conzemius, Clemson University. Effects of planting date on thrips (Thysanoptera: Thripidae) in cotton. Interaction. 2017 Aug;110(4):1563–1575. BACKGROUND. Producers and managers of cotton in the southeastern United States should consider using a multi-tactic approach that uses several BMPs in an overall IPM approach for managing thrips. They are resistant to most pesticides and feed deep within the flower head or on developing leaves. ��,�%�+�I����h���>o��_r�ߛoy��?\D�`��Fz��Uw�"c�����?� ���1O����G���8H�}����(��x��� em�6 Figure 1. Thrips egg on the tip of a thumbtack. However, these control agents help reduce thrips numbers at the infestation source, such as small grains and weeds, before they migrate into the cotton field. Effects of skip-row planting pattern and planting date on dryland cotton insect pest abundance and selected plant parameters. Management Chemical Control. Photo by Scott Stewart, UTIA. The presence of immature thrips especially signals that prior at-planting control measures may be weakening, and that thrips are surviving and reproducing. Clemson (SC): Clemson Cooperative Extension, Land-Grant Press by Clemson Extension; 2020 Oct. LGP 1096. http://lgpress.clemson.edu/publication/best-management-practices-for-thrips-thysanoptera-thripidae-in-cotton/. Control and Prevention . Cover crop, rye residue and in‐furrow treatment effects on thrips. Tobacco thrips and related species overwinter as adults, and possibly as immatures, on weeds, winter crops, and plant debris (i.e., litter) in the southeastern United States.10, Because thrips can significantly injure cotton and reduce yields or at least delay maturity, most cotton planted in the southeastern United States receives a prophylactic insecticide treatment. Adult females of tobacco thrips deposit eggs primarily into the cotyledons (seed leaves) and initial true leaves of cotton seedlings.6 Larvae emerge from hatched eggs in less than a week, depending on temperature,7 feed on leaf cells for approximately another week before undergoing a short (a few days) resting stage, and then turn into newly formed adults that seek mates and start the entire process over again.8 Tobacco thrips can have multiple generations per year,9 with only a generation or two having an impact on cotton. Miyazaki J, Stiller WN, Wilson LJ. In addition, imidacloprid + thiodicarb ( Bayer 2014 ) is available as a premix of … 1995 Sep;120(5):778–784. 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. Last year, most of the cotton in Mississippi was sprayed for thrips at least one time and many fields were sprayed multiple times, even behind a seed treatment. Adults and nymphs infest the underside of cotyledons, young leaves and growing points, rasp the plant surface and suck out the cell contents: affected areas are silvery-white; younger leaves become distorted; growing points can die. 17(4):263–269. Color mulches influence yield and insect pest populations in tomatoes. 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. This is best achieved by treating the block at maximum bud swell or onset of full bloom. Cotton aphids have been more prevalent than normal this year in NC. Inheritance and transfer of thrips resistance from Pima cotton to Upland cotton. Figure 7. Remember that cotton is most sensitive to thrips damage when the 1 st true leaf begins to appear between the … Some situations may require supplemental insecticide treatment for boll-worm and fall armyworm. and thrips (Thrips spp.) North Carolina State University. Other strategies for controlling thrips in cotton include practices deployed as cultural techniques. A good integrated pest management (IPM) strategy will use several of the aforementioned control tactics and BMPs concurrently.40. Lygus Control - Insecticides - 2010 Treatments include Dyne-amic Treatment Chemical name Rate (form/ac) Untreated Rimon 0.83EC novaluron 12 oz Beleaf flonicamid 2.8 oz Beleaf + Brigade flonicamid + bifenthrin 2.8 oz + 16 oz Beleaf + Rimon flonicamid + … This is a major pest and active from July-October and February-April. Journal of Economic Entomology. Tobacco thrips are the most common thrips species that infest North Carolina cotton. Resistance to certain organophosphate, carbamate, and synthetic pyrethroid insecticides has been documented in populations of western flower thrips. 2007. Other strategies for controlling thrips in cotton include practices deployed as cultural techniques. 98 0 obj <>/Filter/FlateDecode/ID[<32F372E72AD904C3A264AFD8A839A107>]/Index[80 30]/Info 79 0 R/Length 89/Prev 1156576/Root 81 0 R/Size 110/Type/XRef/W[1 2 1]>>stream Populations typically peak within 4 weeks of plant emergence. Under either condition, a foliar spray, when needed, is very beneficial in getting cotton off to a good start. The probability of having a thrips infestation in cotton is 100%. “Temik 15G was on the market for about 40 years and was used on a significant number of cotton acres for control of thrips and nematodes. This makes them a difficult target for insecticides, so thorough coverage is essential. Having this built-in protection can be very effective when identified and deployed. %%EOF Despite these hurdles, advances in genetic engineering have produced a cotton trait that uses antixenosis to deter injury from thrips.24 Cotton with this trait is expected to be commercially available in 2022. Expected occurrence of insect and mite pests in cotton Crop growth stage Common pests Occasional pests Emergence to 1st square Thrips, wireworms Aphids, spider Consider spraying only if 10 thrips per blossom are found when flowers are shaken onto a flat dark-colored surface and thrips are counted. Of these strategies, mulching films or other reflective ground surfaces have been shown to reduce thrips, aphids, and whiteflies in tomatoes35 and other crops.36 Screens and materials blocking ultraviolet light37 can provide greenhouse crops with some protection, but the implementation of physical or mechanical control strategies in field crops, such as cotton, are challenging, cost-prohibitive, and questionably effective. However, these control agents help reduce thrips numbers at the infestation source, such as small grains and weeds, before they migrate into the cotton field. Thrips are considered the number one pest of seedling cotton. Chemical Control: Seed treatment with Imidacloprid(5 g/kg seed) keeps the crop free of sucking pests over a month. Within-plant distribution and dynamics of thrips species (Thysanoptera: Thripidae) in cotton. The predominant species infesting and causing injury to seedling cotton in the Southeast is the tobacco thrips, Frankliniella fusca (Hinds) (figure 2), as it readily reproduces on and colonizes the crop, but other species of less importance are present.3,4. Khaliq A, Afzal M, Khan AA, Raza AM, Kamran M, Tahir HM, Aqeel MA, Ullah MI. Non-chemical options (presented hereafter) for managing thrips in cotton should be used when possible to slow the development of resistance to insecticides. Molecular identification of thrips species infesting cotton in the southeastern USA. Cotton thrips infestation predictor: a practical tool for predicting tobacco thrips (. 35). Thrips are some of the most damaging insect pests to the leaves of onions world-wide. Recommendations for the use of agricultural chemicals may be included in this publication as a convenience to the reader. A web-based tool for predicting risk from tobacco thrips in cotton. Csizinszky AA, Schuster DJ, Kring JB. Published: Oct 23, 2020 | Printable Version (PDF) | Jeremy K. Greene, Francis P. F. Reay-Jones and Sophia ConzemiusLGP 1096, Thrips (Thysanoptera: Thripidae) are the most consistent and predictable insect pests of Upland cotton, Gossypium hirsutum L., in South Carolina and much of the southeastern United States. Introduction. This can often make chemical control very difficult, particularly in March, as thrips adults may continually re-infest fields following spray applications. Chemical Control. There are many insecticides registered for WFT, but overuse of pesticides can lead to resistance in the WFT populations you are trying to control. Influence of tillage and deep rooted cool season cover crops on soil properties, pests, and yield responses in cotton. Treatment recommendations (Table 1) are based on the need for chemical control to optimize fruit set for the fresh market. Reports of thrips damage on cotton with an insecticidal seed treatment and/or in-furrow neonicotinoid (Admire Pro) have increased over the past week. 2002 Jul;42(4):1384. ��1����z��W��%��;@ N�zM����L�&w����0F�c�� Therefore, preventative use of seed treatments is a standard practice … Many researchers have shown that effective thrips control increases yields. And according to the Mississippi State University Extension and research entomologists, the probability of having a thrips infestation in cotton in most parts of the Mid-South is 100%. Western flower thrips: cotton, navy bean, mungbean, sunflower, canola and peanuts. Scout fields infested with cotton aphids twice a week since aphid numbers can increase rapidly (Fig. Background: Plant bugs (Lygus spp.) h�TQ�n�0��[t�#N��0�$2�&�.Ktj������H7E���㤣���� ��h�8C�{q/�"�x�=( ���趃 R��:�8|7B]�=%�9^��t���kt{NL�?>s�����$4 8� This means that all the treatments behaved in the same fashion against the pest. Thrips appeared to be a more important component of yield loss than nematodes, as non-nematicidal insecticides did not have high yield losses. Identification & Monitoring: Southwestern Entomologist. 1961 Feb;54(1):77–9. Cotton Thrips. WFT is the most prevalent species of thrips in Massachusetts greenhouses. For example, dinotefuran (Safari), available to professional applicators, can provide good control of thrips. Clemson (SC): Clemson University, Clemson Cooperative Extension; 2020. p. 105–118. Chemical Control of Pinkl Boll Worm Application of insecticides like Profenophos 50 EC @ 2 ml/l or Thiodicarb @ 1g/l Or acephate @1 g/l. Bourland FM, Benson NR. Image credit: Sophia Conzemius, Clemson University. It is recommended that specially made blue traps be used, rather than standard yellow traps; the blue traps seem to be more effective and it is easier to see the light-colored nymphs on blue than on yellow. These insecticides systemically enter a seedling cotton plant through water uptake in the root system and control thrips that feed on above-ground tissue. 2020. Overhead sprinkler irrigation can also reduce populations of thrips in cotton.34. 120SC also gave thrips control over 75% and were also statistically on a par with each other. The neonicotinoids11 thiamethoxam and imidacloprid, the organophosphate11 acephate, and the carbamate11 thiodicarb are commonly used as seed treatments. The neonicotinoid insecticidal class currently contains seven chemicals; however, only two of these are labeled for thrips control in cotton, namely, imidacloprid and thiamethoxam (Syngenta 2012). Figure 3. Thus, seed or foliar-applied chemical insecticides are typically required to protect cotton from these pest groups. endstream endobj 86 0 obj <>stream Wagner TL, Wu HI, Sharpe PJ, Schoolfield RM, Coulson RN. Chemical control and action thresholds. 130(5):302–308. and thrips ( Thrips spp.) ;�O�#� Xx�O Cover crop, rye residue and in‐furrow treatment effects on thrips. The neonicotinoid insecticidal class currently contains seven chemicals; however, only two of these are labeled for thrips control in cotton, namely, imidacloprid and thiamethoxam (Syngenta 2012). 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. From plants across the field, sample 60 leaves divided among the top, middle, and lower portion of a plant to determine actual infestation levels. Leigh TF. Bionomics of cotton thrips: a review. TAGS: Insects Insecticide. Influence of thrips injury on leaf development and yield of various cotton genotypes. Sources of plant resistance to thrips: a potential core component in cotton IPM. Eggs of thrips (figure 5) are partially inserted into leaf tissue. Control strategies rely heavily on chemical control used at planting, but issues with insecticide resistance are emerging that compel the use of additional tactics. Place the box on the ground and angle it next to a group of cotton plants… Genetic variation and comparative analysis of thrips resistance in glandless and glanded cotton under field conditions. The threshold for thrips is 2-3 thrips per cotton plant with immatures present. Thrips are small slender insects (1.2mm long by 0.1mm), just visible to the naked eye. Thrips have been one of the most important pests of cotton, Gossypium hirsutum L., during past years, causing damage to seedlings in early season. and thrips (Thrips spp.) Iran Agricultural Research. 2011 Oct. 2(2):1–9. ��z�[;i���6�^Χ��;_��/�X�w�,�S�G��tV�떄.����1�)����U 3g�团ܝ%�ƶ���"��&�ν�(� &pۡ�&�Xz�u���������.�ru�8��kl���7u��K���F����b9�֥%�Ɲ��K�}�O�ۮn�ON�q��}Nd��ڵz^�����m�j}6_A��nwNo��h�fw6Y�?�9����n���FH���:��a���Z���kB,Q���C�Z���ñ�]*S�̤ZʌC? 0 In many field crops, thrips are only a significant pest at the seedling stage, however thrips in summer pulses can cause flower abortion or pod distortion. Olson DM, Davis RF, Brown SL, Roberts P, Phatak SC. Physical/Mechanical Control. Thrips are part of the order Thysanoptera, and are common garden pests that suck plant juices and sometimes spread viruses. Thus, by the time damage is noticed on ripening fruit or distorted terminals, the thrips that caused the damage are often gone. Not much has changed since last year in regards to thrips control via insecticide seed treatment. This was also true for sunflowers, which were also susceptible to powdery mildew as well as thrips damage. Adult male WFT are light yellow, while adult female WFT are a little larger than the males and vary in color from light yellow, yellow with brown splotches, to dark brown. Scouting. Certain insecticides can increase plant susceptibility to certain herbicides. Entomologia Experimentalis et Applicata. This can knock the thrips off the plant and can be repeated as often as the plant can handle it. Parajulee MN, Shrestha RB, Slosser JE, Bordovsky DG. 2010 Oct;66(10):1089–95. Many states have published guidelines regarding thrips control on cotton. maturity can reduce overall cotton yields. Cotton Sci. Ratings ‘1’ through ‘5’ represent advancing injury to true leaves, with ‘0’ indicating no visible injury. (Aeris®) or thiamethoxam (Avicta Complete Cotton®), in-furrow applications of the insecticide aldicarb (Temik®), and an untreated control (no at-planting insecticide). Preventative control with insecticides used at planting is the most common method of addressing tobacco thrips in cotton. DAMAGE TO ONIONS. Pesticides are often used to control western flower thrips (Frankliniella occidentalis) in horticultural crops. Foliar insecticide options include the systemic insecticides Orthene, Bidrin, and dimethoate. An Integrated Pest Management (IPM) program designs compatible and ecologically sound combinations of pest suppression tactics, using both cultural practices and biological control methods. Crop Science. Figure 6. Imidacloprid (Bayer Advanced Tree & Shrub Insect Control, Merit) commonly fails to provide satisfactory thrips control, and imidacloprid generally is not recommended for thrips. Greg Brown says: October 16, 2015 at 9:15 am . Monitoring Pests in a Cotton Field (5/13) Monitoring Spider Mites, Aphids, and Thrips (Seedling Cotton) (5/13) Monitoring Spider Mites, Aphids, and Whitefly (Early Squaring to Boll Development) (5/13) Monitoring Aphids and Whitefly (1st Open Boll to Preharvest) (5/13) … Reed JT, Allen C, Bagwell R, Cook D, Burris E, Freeman B, Leonard R, Lentz G. A key to the thrips on seedling cotton in the mid-southern United States. They also superficially resemble some other thrips species that, if mistaken, may result in poor control because the insecticides selected may not be efficient against chilli thrips. Thrips are also vectors of tobacco streak virus and tomato spotted wilt virus. Cultural practices include manipulation of planting dates, stalk destruction, and variety selection, and biological control methods include conservation of existing natural enemies and application of insecticides when needed. 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 on susceptible cotton. Twice a week, as the cotton emerges and before true leaves appear, scout fields where postemergence sprays will be used. We started seeing the first signs of inadequate control about 4 years ago and the problem has seemed to get worse every year. A row of unprotected cotton (foreground) with extensive injury from thrips, compared with rows protected with insecticide at planting (background). Furthermore, by mid-March when most of the lettuce production is finished, these populations can pose a threat to seedling cotton. In: Parker B.L., Skinner M., Lewis T. (eds) Thrips Biology and Management. Cotton aphid fungus (black spots). %PDF-1.5 %���� Thrips (Thrips tabaci) of Cotton. Individuals who use agricultural chemicals are responsible for ensuring that their intended use of the chemical complies with current regulations and conforms to the product label. An Insecticide to Control Thrips. If none of the above work, a low-toxicity contact insecticide that is labeled for thrips and for plants or … h�bbd``b`��@�q�`��*�S�`= 2011. Plant bugs can be a pest in cotton beginning at pinhead square, on through cut-out. The use of any brand names and any mention or listing of commercial products or services in this publication does not imply endorsement by Clemson University nor does it imply discrimination against similar products or services not mentioned. Join our mailing list to receive the latest updates from LGPress. Celite® 610 (DEadzone) provides an alternative mode of action to control tobacco thrips than currently available chemical insecticides and has a number of a dditional advantages. The economic injury level (EIL) and the economic threshold (ET) are core IP… The guidelines recommend sampling for thrips and assessing feeding injury (figure 7)13 on seedling cotton and comparing results with treatment thresholds. �{6������5 h�j�N�X�Ɵj)�IAil ���/6��v����V-�lU�ք��jO���-WV���SF$V��V5E�\���Z,�ǷԤ�U*V)Y�Q(�%�k&7L���6�T�E����=ܼ�����,2/��{��3�! H�tWK��6��W�8s��z�@�C��k}+��q'�m�=���/ߖ�Fb��G~�H��/��������Ӷ��O���g7�i��j�����������R�xV��h����y1t�w�{��,��Vpo���z��>C ۏ�O�*:Y,����w;��U�D���[�?����4�@�1~4��-=N�'��5��+���XϞ$�M;κ��\��h0P� /@*�3�!�+�kpQe�|p�^��3���&. Conversely, some insecticides can actually “safen” plants, allowing the use of a herbicide that would otherwise cause serious plant injury. Cotton seedlings (7-leaf stage) without (left) and with (right) preventative insecticide used at planting. Reay-Jones FPF, Greene JK, Herbert DA, Jacobson AL, Kennedy GG, Reisig DD, Roberts PM. Journal of Economic Entomology. Figure 4. The information in this publication is provided for educational and informational purposes only. Copyright © 2021 Clemson UniversityClemson Cooperative Extension | 109 Barre Hall Clemson, SC 29634864-656-9872 | Contact Managing [email protected], College of Agriculture, Forestry and Life Sciences, http://journal.cotton.org/journal/2013-17/4/upload/JCS17-263.pdf, https://www.mafes.msstate.edu/publications/bulletins/b1156.pdf, http://www.clemson.edu/extension/agronomy/pest%20management%20handbook.html, https://cottoncultivated.cottoninc.com/wp-content/uploads/2016/04/Thrips-Management-in-SE.pdf, Federal Income Tax Challenges for the Cannabis Industry, Livestock Sales, Extreme Weather Events, and Tax Consequences. App. Effect of migration, temperature, and precipitation on thrips infestations in south Texas. They can become serious pests indoors, outdoors and in greenhouse settings. 30 p. Issued March 2020. One of the most damaging insects in Mid-South cotton production is the tarnished plant bug. For example, delaying the planting date can reduce the risk of thrips injury.13 A mathematical model9 and web-based tool,15 the Cotton Infestation Predictor Tool, is available to help cotton producers determine appropriate planting dates to minimize risk from tobacco thrips.