Rarely is it ever economical to treat thrips past the fourth-leaf stage. This does not necessarily mean that a foliar insecticide is warranted. 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. Stem smearing with imidacloprid 17.8 SL @ 1ml:20 ml water and brush the liquid on the growing tip of the plant. Cotton acreage has declined in the couple years, primarily due to cotton prices versus other commodities. Many have wondered how long this product will hold up given that it is in the same class of chemistry as thiamethoxam. Not much has changed since last year in regards to thrips control via insecticide seed treatment. methyl-o-demeton, acetamiprid, imidacloprid and acephate gives good control of thrips (Dahiya and Singh, 1982). It is very important to remember that there will always be adult thrips on cotton. Chemical Control of Cotton Thrips. Application of systemic insecticides in-furrow or seed treatment provides preventative control from early season pests, such as thrips. This does not include value added through the North Carolina’s textile industry. When immatures are showing up, this means that seed treatments are beginning to break down and reproduction is taking place. Aeris-treated seed still provides good control and is available from Bayer as a downstream treatment at your local dealer. Starting off with a good seed treatment is an excellent way to control insects above and below the ground. Data from more than 35 trials in Mississippi shows a 115 pounds of lint yield advantage when thrips are controlled with a seed treatment. You also may see big differences in varietal responses to thrips feeding. 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. Currently, these pests are resistant to … Acephate alone controls thrips, but the residual is much shorter and the likelihood of follow-up foliar applications is high. 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. In some situations (high thrips infestations and/or slow seedling growth) supplemental foliar insecticides may be needed in addition to at-plant insecticides. We confirmed a few years ago that certain varieties seem to exhibit some host plant resistance to thrips. Catchot may be reached at alc4@msstate.edu. The probability of having a thrips infestation in cotton is 100%. The boll weevil arrived in the state that year and acreage dropped until the weevil was eradicated in the late 70s and early 80s. Since that time, resistance in tobacco thrips to thiamethoxam has been confirmed through laboratory bioassays. North Carolina planted about 450,000 acres in 2013, which places the state third in cotton acreage behind Texas and Georgia. 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. Preventative in-furrow insecticides or seed treatments are recommended. In 2011, we began observing reduced tobacco thrips control with the active ingredient thiamethoxam. Send Explanation. He said insecticide seed treatments from Aeris, Avicta, Acceleron, Poncho/Votivo or Cruiser packages are probably the best option for protection from thrips, … “It’s impressive technology, and it’s important to us now because we’re seeing issues with seed treatments controlling thrips,” Stewart says. You also … Therefore, preventative use of seed treatments is a standard practice and is very appropriate. 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. Active ingredients available for thrips are acephate (not a neonicotinoid), clothianidian, imidacloprid, or thiamethoxam (all neonicotinoids). 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 no longer recommend thiamethoxam in Mississippi on cotton (still an option on other crops). Thrips infestations in cotton vary by location, planting date, and year. Active ingredients available for thrips are acephate (not a neonicotinoid), clothianidian, imidacloprid, or thiamethoxam (all neonicotinoids). 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”. There are really only two seed treatment options in cotton: neonics and acephate. The best approach to managing thrips and other cotton insects is preventative control. Spray NSKE @ 5 % OR acetamiprid 20 SP @ 0.2g/l OR fipronil 5 SC @ 1 ml/l. Thrips are really little tan colored insects that have the shape of a grain of rice but they are way smaller. This is because brand names change and the active ingredients associated with these brands change over time. On 6-13-17 (4 days post insecticide treatment), untreated terminals with 2018 Beltwide Cotton … Insecticide applications can knock down pests such as plant bugs, stink bugs and bollworms and can also help red…

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