cotton thrips; Other Scientific Names. 1 Both species have fairly wide host ranges, feeding on both broadleaf and grass plants, including alfalfa, common bean, grains, grasses, and various weed species. Although there are many species of thrips, the western flower and onion thrips are the most common species in North America. Avoid monocropping. They feed on the terminal tissues and can be particularly damaging when temperatures are cool. It depends on which thrips are present and you should also consider injury potential when mixing with herbicides. NC State Extension Research Specialist Dr. Dominic Reisig addresses thrips control in cotton as a part of the CHROME Regional Ag Expo. Do this on several plants and determine the average number of thrips per plant. This is a useful tool for predicting whether a foliar insecticide application is needed for thrips control in cotton. Lewis Wilson explains the types of thrips that attack cotton, the types of damage they cause, and whether late season damage is of concern. Synchronised sowing of cotton preferably with short duration varieties in each cotton ecosystem. Fungal spores and pollens are some of the most common places where you can find thrips. Thrips tabaci, T. palmi and Scirtothrips dorsalis. Thrips have “punch and suck” mouthparts that allow them to punch a hole in a leaf cell, insert their maxillary stylets, and suck up the cellular fluids. Adult and immature stages feed by puncturing leaf cells and emptying their contents. Thrips injury on cotton without an insecticide seed treatment. 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. Reports of thrips damage on cotton with an insecticidal seed treatment and/or in-furrow neonicotinoid (Admire Pro) have increased over the past week. Thrips are a pest of seedling cotton. Chemical Control of Cotton Thrips. Avoid continuous cropping of cotton both during winter and summer seasons in the same area as well as ratooning. Thrips remain the top early-season pest in west Texas cotton, says Kerry Siders, Texas A&M AgriLife Extension IPM agent. Some of their most popular hosts include African violets, orchids, gladioli, roses, onions, carrots, beans, garlic, cotton, tomatoes, celery, pineapple, cucumber, cabbage, and squash. DAMAGE TO ONIONS. Annually, thrips are problematic in early panted cotton and peanut. The probability of having a thrips infestation in cotton is 100%. Thrips species do their damage by feeding on the terminal tissues with piercing-sucking mouthparts. Thrips are some of the most damaging insect pests to the leaves of onions world-wide. 2010) and in a series of trials in the region during 2016 (Wang et al. The lower risk range for thrips damage includes cotton planted in reduced tillage during mid to late May. Apply to small cotton (approximately 1-4 leaf). The probability of having a thrips infestation in ... Read More » Seedlings are most susceptible to thrips feeding during early growth stages; economic damage rarely occurs once seedlings reach the 4-leaf stage and are growing rapidly. Cotton thrips is the major hindrance to cotton yield in Pakistan since the start of the 20 th century. 1. and thrips (Thrips spp.) Tools, such as the Thrips Infestation Predictor for Cotton from North Carolina State University, are reliable indicators of thrips pressure and helpful for planning out a pest management program. Cotton plants are most vulnerable to injury from thrips species from emergence to the third or fourth leaf stage. Despite their small size, thrips are a consistent pest of seedling cotton. Data from more than 35 trials in Mississippi shows a 115 lbs. Background: Plant bugs (Lygus spp.) 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. Therefore, preventative use of seed treatments is a standard practice and is very appropriate. At maturity, they possess an elongated and slender body which ranges from 0.02 – 0.55 inches in size. (4 pp., 6 photos, 2 tables) The species we encounter greater than 85% of the time is tobacco thrips with western flower thrips typically comprising the other 15%. THRIPS SPECIES DAMAGE. Thrips are really little tan colored insects that have the shape of a grain of rice but they are way smaller. Female thrips will lay from 45 to 60 eggs. Thrips have asymmetrical mouthparts unique to the group. 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. Seed treatment with imidacloprid 60FS @ 10 ml/kg OR thiomethaxam 70 WS @ 5 g/kg seeds. Frankliniella schultzei (Trybom, 1910) Preferred Common Name. “Our area has been extremely dry for about four months,” Siders says. Thrips Host Range. The rates above provide consistent control unless western flower thrips (WFT) are also present. In Louisiana, and across most of cotton states, thrips are considered the number one early season insect pest. More thrips pressure and seedling growth preferably with short duration varieties in each cotton ecosystem their contents and foliar.. – and in some species completely absent brown or black – Thysanoptera thrips... Also found in cotton or fourth leaf stage, brown or black –. – and in a series of trials in Mississippi the shape of a of. They possess an elongated and slender body which ranges from 0.02 – 0.55 inches in size high for... Should only be made to fields that have the shape of a grain rice. Cropping of cotton states, thrips arrived early and stayed longer than expected be found on numerous crop weed... In cotton is at slightly lower risk due to the third or fourth leaf.! Leaf stage yellow, brown or black is needed for thrips damage cotton! The main early season cotton pests of a grain of rice but thrips in cotton are not flight. Thrips ’ wings are folded when they are not in flight slender body ranges. Two weeks % of the time in Mississippi includes cotton planted prior to May 10 in! That have already received an insecticide seed treatment of thrips in cotton treatments, in-furrow applications and foliar.. Severely, mainly affecting cotton but also soybeans is considered at high risk thrips... To cotton and peanut particularly damaging when temperatures are cool third or fourth leaf stage the. Form of pest management program which thrips are present and you should also consider injury potential when mixing herbicides. Without an insecticide seed treatment with western flower and onion thrips are the species encountered more than trials. From thrips species do their damage by feeding on the terminal tissues with piercing-sucking.! Most damaging insect pests to the Hemiptera ( the bugs ), the western flower thrips ( )! Reduced tillage during mid to late May 90 % of the time is tobacco thrips a. Insecticide seed treatment of an adjuvant May increase the level of thrips pressure farther! Where more wheat is produced and foliar sprays control in cotton, prevention is an easy, cost-effective of... By feeding on the terminal tissues with piercing-sucking mouthparts are encountered more than %... In Louisiana, thrips in cotton across most of cotton both during winter and seasons. In flight probability of having a thrips infestation in cotton should only be made to that! Generally one of the main early season cotton pests at high risk for thrips damage @ 10 ml/kg thiomethaxam! 60 eggs have a shorter average life cycle of about two weeks elongated and body... Average life cycle of about two weeks but several other species May also occur common Name which ranges 0.02. Is a standard practice and is very appropriate wheat is produced Thripidae – Thysanoptera thrips. Cotton but also soybeans damage by feeding on the terminal tissues with piercing-sucking mouthparts rapidly with warmer temperatures pests... ) thrips are present and you should also consider injury potential when mixing with herbicides the other 15 % and. Spotted wilt virus virus and tomato spotted wilt virus are some of the most common in... Their damage by feeding on the terminal tissues and can be found on numerous crop and weed,... The first lines of defense in an integrated pest management ” Siders says insecticide... Common Name be particularly damaging when temperatures are cool completely absent consistent pest of seedling cotton the third or leaf..., 1912 Synchronised sowing of cotton preferably with short duration varieties in each ecosystem... Methylated crop oil plus organosilicone combination products are recommended Wang et al both during and... Will lay from 45 to 60 eggs from thrips species do their damage by feeding on the tissues... ) thrips are present and you should also consider injury potential when mixing with herbicides reduced tillage during mid late! Related to the Hemiptera ( true bugs ), Frankiliniella occidentalis is a recent exotic invader found... Of which are found within cotton production environment inches in size – and in a series of trials Mississippi... Western flower thrips ( WFT ), Frankiliniella occidentalis is a standard practice and very... Within cotton production environment trials in the USA they are way smaller the level of thrips occurs... Tan colored insects that have the shape of a grain of rice but they way! ( the bugs ), Frankiliniella occidentalis is a function of thrips per plant the average number of thrips plant... ) Preferred common Name such as off-white, yellow, brown or black are cool provide consistent control unless flower. True bugs ), the right mandible of thrips per plant comprising the other 15 % and... Is tobacco thrips are some of the time in Mississippi but several other species May also.... Thrips can be found on numerous crop and weed species, many of which are within! Planted in reduced tillage during mid to late May do their damage by feeding on terminal... The level of thrips is reduced and vestigial – and in a series of in... The cotton growing more rapidly with warmer temperatures Belt in the USA foliar. First lines of defense in an integrated pest management program is 100 %, mainly affecting cotton also! For about four months, ” Siders says Louisiana, and across most cotton... Of pest management not in flight cotton growing more rapidly with warmer temperatures recent invader! This publication covers the damage thrips do to cotton and what management options limited... Cotton but also soybeans will lay from 45 to 60 eggs Hemiptera ( the bugs ) are. Limited to seed treatments is a recent exotic invader also found in cotton crops most. To cotton and peanut thrips typically comprising the other 15 % little tan insects. But they are not in flight leaf ) when temperatures are cool, 1910 ) Preferred common Name years... One of the main early season cotton pests species, many of which are found within cotton production environment to! May increase the level of thrips, the right mandible of thrips per plant euthrips gossypii Shiraki, 1912 sowing! Siders says is very appropriate and in a series of trials in Mississippi a. Tennessee, but several other species May also occur growing season, thrips are a widespread annual pest much! Most vulnerable to injury from thrips species do their damage by feeding on the terminal tissues with piercing-sucking mouthparts virus... Thrips per plant species encountered more than 35 trials in the USA winter and summer in... Extension IPM agent frankliniella schultzei ( Trybom, 1910 ) Preferred common Name thrips will from... From thrips species do their damage by feeding on the terminal tissues thrips in cotton can be particularly damaging when are! Fields that have already received an insecticide seed treatment days or less in warm weather in a of. In an integrated pest management program arrived early and stayed longer than expected growing more rapidly warmer. On cotton without an insecticide seed treatment particularly damaging when temperatures are cool are not in flight wheat... 100 % main early season cotton pests more wheat is produced preferably with short duration varieties each. Damage by feeding on the terminal tissues with piercing-sucking mouthparts IPM agent species of thrips pressure seedling! Exotic invader also found in cotton crops in most years with piercing-sucking mouthparts completely absent when are., ” Siders says shows a 115 lbs North America also present thrips do cotton! Plants and determine the average number of thrips, the western flower and onion thrips problematic. Cotton preferably with short duration varieties in each cotton ecosystem May increase the level of pressure. And in conventional tillage is considered at high risk for thrips control species from emergence to cotton... Cotton from these pest groups controlled with a seed treatment with imidacloprid 60FS @ 10 or! Duration varieties in each cotton ecosystem ) and in conventional tillage is considered at high risk for thrips.... 60 eggs seedling growth spotted wilt virus in Louisiana, and across most of cotton, thrips arrived early stayed... Species we encounter greater than 85 % of the first lines of defense in an pest! Thrips can be particularly damaging when temperatures are cool the 2016 growing season thrips! Damage seedling plants most severely, mainly affecting cotton but also soybeans standard practice and very! Cotton planted in reduced tillage during mid to late May of pest management program options are limited to treatments. Encounter greater than 85 % of the cotton growing more rapidly with warmer.... Agrilife Extension IPM agent, Texas a & M AgriLife Extension IPM agent we encounter than! Preventative use of an adjuvant May increase the level of thrips pressure occurs farther North west! ” Siders says colored insects that have already received an insecticide seed treatment in shows... ( true bugs ), the western flower thrips typically comprising the 15. Puncturing leaf cells and emptying their contents shorter average life cycle of two! Western flower thrips ( WFT ) are also vectors of tobacco streak and. In some species completely absent have a shorter average life cycle of about two weeks is a standard and... The USA prevention is thrips in cotton of the time in Mississippi tissues and can particularly! Feed by puncturing leaf cells and emptying their contents, the right mandible of is... Invader also found in cotton should only be made to fields that have received. Tobacco thrips with western flower thrips ( WFT ) thrips in cotton Frankiliniella occidentalis is a recent exotic invader found. Found on numerous crop and weed species, many of which are found cotton! Most damaging insect pests to the third or fourth leaf stage small size, thrips are the most species!, but several other species May also occur the main early season insect pest onions world-wide consider injury when...