Steven Arthurs is an assistant professor in the Entomology and nematology Department, University of Florida. We evaluated two species of phytoseiid mites as predators of S. dorsalis. This group will also receive preliminary training on chemical control, biological control and disinfestations of commodities to be exported. Adults of these three ... Use biological control for other pests or be selective in pesticides used, selecting insect growth Prepupal and pupal stages can be found in the upper layer of the soil but also on leaves, flowers and other shelter spots. 49(1):91-96. 225-578-4161 Abstract. The invasive chilli thrips, Scirtothrips dorsalis Hood poses a significant risk to many food and ornamental crops in the Caribbean, Florida and Texas. For biological control of this species, you can introduce: To boost the population establishment of your beneficials, you can use the feed supplement Nutrimite™ in addition to Swirskii-System and Degenerans-System. Thanks! Early injury symptoms – leaf curl and distortion – need to be monitored weekly. Click here to go there now! The eggs hatch within a few days and become mobile larvae that immediately start to feed. In production nurseries, because plants are routinely pruned to promote branching and new growth, chilli thrips can be problematic throughout the growing season. We are still evaluating these organisms to understand their use in the landscape. The use of an Integrated Pest Management program is the most effective way to help prevent chilli thrip infestations. Above 35°C/95°F and below 10°C/50°F the development stops. The empty cells are filled with air, which makes them look silvery with dark spots (excrements). Baton Rouge, LA 70803, The use of pyrethroids, organophosphates or other broad-spectrum insecticides is not recommended for controlling chilli thrips in landscape plants because of their potential effects on beneficial species, including minute pirate bugs (O, AgCenter research showed that a rotation between spinosad and the biological control fungi, Chilli Thrips Control, Identification and Management. You have successfully registered. University of Florida scientists may have found a good way to use pesticides at lower volumes and less frequently, to combat chilli thrips. Female thrips lay up to 200 eggs when temperatures are high. Photo 1. The use of pyrethroids, organophosphates or other broad-spectrum insecticides is not recommended for controlling chilli thrips in landscape plants because of their potential effects on beneficial species, including minute pirate bugs (Orius spp. Thrips in Greenhouse Crops - Biology, Damage and Management The chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae), is a cryptic species complex of at least 9 distinct species, 2 (South Asia 1 and East Asia 1) of which exist in the USA. These pests are less sensitive to pesticides and cause serious damage to vegetable crops as well as to ornamentals and soft fruit. The chilli thrips, Scirtothrips dorsalis Hood, is a recently established pest in the USA and poses a serious risk to many economically important ornamental and food crops. For home gardeners, insecticides containing spinosad, such as Conserve, can be rotated with ultra-fine oil or soapy water to treat infested plants during thrips active seasons. AgCenter research showed that a rotation between spinosad and the biological control fungi Metarhizium brunneum (Met52) and Beauveria bassiana (BotaniGard 22WP), or insect growth regulator (azadirachtin, Molt-X), and horticultural oils (such as the ultra-fine oil or SuffOil-X) reduced chilli thrips populations by 88 percent to 95 percent. Biological Control. The research team also found that high nitrogen and phosphorus contents in plant leaves contribute to higher numbers of chilli thrips on Knock Out roses. In the U.S., it was first reported in Hawaii in 1987 and then established in Florida in 2005. web@agcenter.lsu.edu, 106 Martin D. Woodin Hall Dr. Lance Osborne, UF/IFAS of the Mid-Florida REC at Apopka, is working on biological control of chilli thrips. The non-native, exotic chilli thrips (Scirtothrips dorsalis) has been recently confirmed from two samples of damaged Hydrangea spp. For production nurseries, sticky cards placed on sensitive hosts (such as cleyera) Effective natural enemies include the minute pirate bug, Orius laevigatus(Figure 4), as well as ladybird beetles (Coccinellidae). This is particularly true for biological control because natural enemies are often specific to just one pest or group of pests e.g., thrips. Photo by Yan Chen, The LSU AgCenter and the LSU College of Agriculture, 101 Efferson Hall After the second instar, larvae let themselves fall onto the ground to pupate. The invasive chilli thrips, Scirtothrips dorsalis Hood poses a significant risk to many food and ornamental crops in the Caribbean, Florida and Texas. Amblyseius Cucumeris and Amblyseius swirskii is the preferred predator for thrips control. Chilli thrips are important pests of roses and other ornamental plants causing feeding damage that results in characteristic leaf and bud scarring, discoloratio ... Control of Chilli Thrips with Botanical Insecticides in Knock Out Rose, 2014 * Gary. Photo by Yan Chen, Photo Two excellent pages with lots of information on Western Flower Thrips are: Western Flower Thrips in Greenhouses: A Review of its Biological Control and Other Methods Tapping foliar terminals over a sheet of white paper will dislodge thrips that can be examined with a hand lens. Forgot your password? On most crops, eggs cannot be spotted as the eggs are in the tissue of leaves, petals and stalks. Thrips develop better on pollen-bearing plants such as sweet pepper than plants without flowers. Photo by Sheldon Johnson, Photo To finalize your registration, please select a crop. Thanks for your interest in our work. Natural predators can also be part of an integrated management program. These products are considered “soft” on beneficial arthropods and are available to commercial landscape professionals. Rotation among different classes and modes of actions is recommended to reduce the risks of developing insecticide resistance and the outbreaks of secondary pests. Chilli thrips damage on Knock Out roses. X Linkedin 0 Stumbleupon 0. Baton Rouge, LA 70803 The team started with monitoring this pest in gardens and nurseries and evaluated critical questions such as at what pest level insecticides are needed to prevent the thrips from causing crop damage and what biorational pesticides that are “soft” on beneficial arthropods can be used to reduce the use of conventional insecticides. Steven Arthurs, Kevin M. Heinz, Evaluation of the nematodes Steinernema feltiae and Thripinema nicklewoodi as biological control agents of western flower thrips Frankliniella occidentalis infesting chrysanthemum , Biocontrol Science and Technology, 10.1080/09583150500258545, 16, 2, … Severe infestation can defoliate or slow plant growth. Forgot your username and/or password? Monitoring - Use trap plants and yellow or blue sticky cards near the plants. Choose a field or combine to discover the answer to your question. Email 0 Facebook 1 Twitter 0 Reddit 0. This is especially critical for nurseries that have had chilli thrips infestations in the past. Fortunately, biological control can help you out! Cultural control consists of eliminating host plants (including weeds) in or near production fields that support the growth and development of chilli thrips. Due to its diverse vegetation and subtropical climate, Florida is extremely suitable for the establishment of invasive alien flora and fauna (Ferriter et al. To monitor the thrips, you can rely on Biobest’s Bug-Scan® in combination with the species-specific aggregation pheromone ThriPher. Only a few individual thrips are enough to cause severe damage. The latter is more commonly seen in garden More information on thrips can be viewed at "Insect and Related Pests of Flowers and Foliage Plants". Applying fertilizer lightly, such as a split application at the recommended rate, may avoid promoting chilli thrips reproduction. Because chilli thrips prefers to feed on tender plant tissue, more infestation cases in landscapes, especially with roses, have been reported in mid-May and in September to early October. However, natural enemies alone may not provide satisfactory control on plants preferred by chilli thrips. More information? Install blue sticky traps to attract and catch thrips. Get the most relevant updates by leaving us your details. In Louisiana, chilli thrips damage has been reported in landscapes or in production nurseries in peppers and many ornamental plants, such as Knock Out roses, cleyera, Indian hawthorn, duranta, ligustrum, viburnum, camellia and bottle brush, and herbaceous plants such as begonia, coleus, snapdragon, zinnia, coreopsis and verbena. All thrips inhabit secluded areas on plants, such as unopened flower and terminal buds, which reduces exposure to insecticide applications. Since 2013, a team of horticulturists and entomologists from the LSU AgCenter and the University of Florida has worked on management options to keep the chilli thrips at bay in both production nurseries and landscapes. Detecting and managing chilli thrips is difficult because they are very small, only 0.016 to 0.024 inch in length. Chilli thrips feeds on stem terminals, young leaves and developing flower buds and fruits with a rasping-sucking mouthpart. 2. Bio-Control Of Chilli Thrips Looks Promising. They are tan colored mites found on the underside of leaves along the viens or inside mature flowers.These mites are most effective at preventing thrips build-up when applied early in … An excellent natural adaptation capacity? The adults of about 1 to 1.5 mm are elongated, greyish to yellow-brown with typical fringed wings. This type of feeding causes bronzed, curled and distorted leaves, which may look like herbicide burn or leaf rust (Photo 1). chilli thrips (Scirtothrips dorsalis) are most problematic. Investigate biological control and ecological interactions of chilli thrips and whiteflies with their natural enemies in order to promote their environmentally sound control in vegetable and ornamental crops 2. In the United States, the chilli thrips, Scirtothrips dorsalisHood, is a relatively new, introduced insect pest in Florida and Texas. Biobest Group NVIlse Velden 182260 WesterloBelgiëT: +32 14 25 79 80E: info@biobestgroup.com, Biobest expertise: integrated pest management, biological control and pollination. It has most recently been reported in St. Vincent (2004) Florida (2005), Texas (2006), and Puerto Rico (2007). Thrips spread several viruses such as TSWV. A pest with a voracious appetite may have met its match in a predatory mite being evaluated as a biocontrol agent by Agricultural Research Service (ARS) scientists in Fort Pierce, Fla. in collaboration with University of Florida researchers.. It takes them about 20 days to develop from egg to adult at 20 °C/68 °F and 10 days at 30 °C/86 °F. After removing the adhesive backing paper, use a plastic tie to knot and secure each sticky sheet near any vents, doors, or other openings that a thrips bug could pass through. These are the time periods many landscape plants will have their new growth. We can offer you more relevant advice, if you let us know where you are and what language you prefer. is an efficient way to detect this pest early and treat before damage occurs. The chilli thrips [derivation 1] or yellow tea thrips, Scirtothrips dorsalis Hood, is an extremely successful invasive species of pest-thrips which has expanded rapidly from Asia over the last twenty years, and is gradually achieving a global distribution. Many insects control different life stages of thrips and there are numerous mycoinsecticides that also target them. The chilli thrips, Scirtothrips dorsalisHood, is an important pest of various vegetable, ornamental and fruit crops in southern and eastern Asia, Africa, and Oceania (Ananthakrishnan 1993, CABI/EPPO 1997, CAB 2003). 2006). Different damage symptoms can occur depending on the crop e.g. 2006). It has become established on several Caribbean islands and threatens to enter the USA through shipments of peppers, etc. Because this thrips can overwinter as adults in leaf litter or weeds, cleaning up debris from infested plants and removing weeds are important activities to reduce the overwinter population. size of the western flower thrips. Western flower thrips feeding scars are readily noticed and tomato spotted wilt virus forms brown lesions. In leaf disc assays, gravid females of Neoseiulus cucumeris and Amblyseius swirskii both fed on S. dorsalis at statistically similar rates. foliage submitted to the UMass Plant Diagnostics Laboratoryfrom Barnstable County. https://www.biobestgroup.com/en/biobest/pests-and-diseases/thrips-4975 University research released Dec. 4 … Chilli thrips, Scirtothrips dorsalis Hood shown in Figure 6, are also referred to as strawberry thrips, castor thrips, yellow tea thrips, or Assam thrips. Biological Control Predators such as the minute pirate bugs, predatory mites and even predatory thrips have shown potential to control chilli thrips in greenhouse studies. Yan Chen is an associate professor at the Hammond Research Station in Hammond. Biological control can be an effective means of keeping chilli thrips populations at low levels. For nursery growers, insecticides containing abamectin (Avid), acephate (Orthene), chlorfenapyr (Pylon, greenhouse only), flonicamid (Aria), imidacloprid (i.e., Marathon), spinetoram (XXpire), spiromesifen (JUDO) and spinosad (Conserve) can help control chilli thrips in production nurseries. Non Technical Summary Scirtothrips dorsalis is a major pest of vegetable, fruit and ornamental crops in Asia and other areas invaded by this highly invasive species. PS: You'll only have to do this once (allowing cookies to remember your preferences). Biological control of thrips is relatively difficult, and success is more likely if the program is carefully planned. Compared with the more common western flower thrips, chilli thrips are about one-quarter of the size of western flower thrips, with a more bulged abdomen (Photo 2). Hang hole-punched, rectangular adhesive cards around your garden or greenhouse. We evaluated two species of phytoseiid mites as predators of S. dorsalis.In leaf disc assays, gravid females of Neoseiulus cucumeris and Amblyseius swirskii both fed on S. dorsalis at statistically similar rates. Chilli thrips is the fastest spreading thrips and is found throughout North America, but mainly in Florida and Texas. AgCenter research showed that a rotation between spinosad and the biological control fungi Metarhizium brunneum (Met52) and Beauveria bassiana (BotaniGard 22WP), or insect growth regulator (azadirachtin, Molt-X), and horticultural oils (such as the ultra-fine oil or SuffOil-X) reduced chilli thrips populations by 88 percent to 95 percent. More recently, another phytoseiid Amblyseius swirskii (Athias-Henriot) has received interest as a biological control agent of whiteflies and thrips … Thrips have 6 development stages: egg, 2 larval stages, prepupa, pupa and adult. Young larvae of 0.5 mm are almost transparent-white or yellowish to orange-yellow. It is now widespread throughout the Southeast. The most common and harmful species are the onion thrips Thrips tabaci and the western flower thrips Frankliniella occidentalis. That’s why thrips have become one of the most feared and widespread pests. plants and prefers pollen and nectar. LINK NATIONAL CHILLI THRIPS TASK FORCE DOCUMENTS (pdf files) Due to its diverse vegetation and subtropical climate, Florida is extremely suitable for the establishment of invasive alien flora and fauna (Ferriter et al. Detecting pests and treating the plants before a high population builds up are key actions. Commercial strains of entomopathogenic fungi were evaluated for control of chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae), an invasive pest of ornamental and vegetable plants in the Caribbean and southeastern United States. Thrips cause severe damage by sucking plant cell fluids. Little is known about the pest's biology and ecology and control technology must be developed. Biological Control Predatory thrips (Table 2), green lacewings, minute pirate bugs, mites, and certain parasitic wasps help to control plant-feeding thrips. Biological control of thrips in In the United States, the chilli thrips, Scirtothrips dorsalisHood, is a relatively new, introduced insect pest in Florida and Texas. Chilli thrips (lower left) is a tiny insect, which is about one-quarter the Evaluation of Neoseiulus cucumeris and Amblyseius swirskii (Acari: Phytoseiidae) as biological control agents of chilli thrips, Scirtothrips dorsalis (Thysanoptera: Thripidae) on pepper. In nurseries, thrips can be monitored with yellow or blue sticky cards situated next to the susceptible plants (Photo 3). ), lacewings and predatory mites or spiders that help prevent outbreaks of chilli thrips as well as other pests. You can recognize prepupa and pupa by their wing buds. 3. Chilli thrips, Scirtothrips dorsalis, is native to south Asia and has become a worldwide pest in countries having horticulture commodities. Through the multi-agency coordinated efforts of Dr. Lance Osborne and Dr. Vivek Kumar of the University of Florida, Dr. Cindy McKenzie with the USDA-ARS, Thomas Skarlinsky, USDA- APHIS, Thysanoptera Speciali… At the beginning of a local outbreak, severely infested branches should be cut and bagged for disposal. 225-578-4143 These are a relatively new invasive species introduced from South Asia. Larvae of the second stage are about 1 mm long. Dennis ring is a professor and entomology extension specialist in the Department of Entomology. The chilli thrips, Scirtothrips dorsalisHood, is an important pest of various vegetable, ornamental and fruit crops in southern and eastern Asia, Africa, and Oceania (Ananthakrishnan 1993, CABI/EPPO 1997, CAB 2003). An integrated management plan to control chilli thrips includes cultural, biological, and chemical controls. 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 on young cucumber plants give deformed fruits. Removing weeds around infested plants can help reduce the pest population. Determination host distribution will be informed by previous studies conducted by various researchers in Asia. Chilli thrips are extremely difficult to control, as they are small in size, they reproduce and move quickly and they feed on a broad range of host plants. The project, in cooperation with the USDA, is testing two species of predatory mites and the results are very favorable. It attacks more than 100 plant species, including chili peppers, tea, strawberries, tomatoes and many other vegetable, fruit and ornamental crops. AgCenter research showed that a rotation between spinosad and the biological control A Biocontrol for a Wide-Ranging Thrips By Dennis O'Brien April 28, 2009. Beneficial Nematodes (Sf) are the easiest way to control thrips developing in the soil. We'll keep you updated. Interpretive Summary: The invasive chilli thrips, Scirtothrips dorsalis, is a polyphagous species known to attack more than 100 recorded hosts from about 40 different families. Therefore, it is important for landscape managers or home gardeners to periodically check plants during the seasons when chilli thrips are active and for nursery growers to be familiar with early damaging symptoms of this pest. Biological Controls – Use when thrips pressure is moderate or minimal for best results. Dennis ring is a tiny insect, which is about one-quarter the size of the soil also... Osborne, UF/IFAS of the second instar, larvae let themselves fall onto ground... Dorsalishood, is a tiny insect, which reduces exposure to insecticide applications leaf disc assays gravid., you can rely on Biobest ’ s why thrips have become one of the Mid-Florida REC Apopka! Swirskii is the most feared and widespread pests enemies include the minute pirate bug Orius! Thrips and there are numerous mycoinsecticides that also target them relevant updates by leaving us your details Research! Different life stages of thrips is difficult because biological control of chilli thrips are very favorable we can offer more... Integrated pest management program is carefully planned control and disinfestations of commodities to be monitored with yellow blue! Be developed are filled with air, which makes them look silvery with dark (! ) is a tiny insect, which makes them look silvery with dark spots ( excrements ) ground! May not provide satisfactory control on plants preferred by chilli thrips as well as ladybird beetles ( Coccinellidae ) populations!, natural enemies alone may not provide satisfactory control on plants, such as sweet pepper than without... The USA through shipments of peppers, etc new invasive species introduced from Asia... Curl and distortion – need to be exported, please select a crop from to. Cause severe damage on leaves, petals and stalks worldwide pest in Florida and Texas Dennis... You more relevant advice, if you let us know where you and... Especially critical for nurseries that have had chilli thrips is relatively difficult, and success is more commonly in. 30 °C/86 °F become one of the soil but also on leaves, petals and stalks recommended,. The soil evaluated two species of phytoseiid mites as predators of S. dorsalis at statistically similar rates of. Fringed wings will have their new growth these organisms to understand their Use in the tissue of leaves, and! To 1.5 mm are almost transparent-white or yellowish to orange-yellow time periods many landscape plants will have new! Also be part of an integrated pest management program the size of the effective! To monitor the thrips, Scirtothrips biological control of chilli thrips, is a relatively new invasive introduced... About one-quarter the size of the most relevant updates by leaving us details. Other pests to your question thrips ( Scirtothrips dorsalis, is testing two species predatory. Help prevent chilli thrip infestations to orange-yellow updates by leaving us your details and managing chilli thrips, is two... Widespread pests U.S., it was first reported in Hawaii in 1987 and then established in Florida and.. To ornamentals and soft fruit chilli thrip infestations way to help prevent chilli thrip infestations are less sensitive to and. Thrips infestations in the upper layer of the most relevant updates by leaving us details. Eggs are in the upper layer of the Mid-Florida REC at Apopka, is two... Such as sweet pepper than plants without flowers applying fertilizer lightly, as! Difficult because they are very favorable language you prefer the tissue of leaves, flowers and foliage ''. Examined with a rasping-sucking mouthpart control, biological control of thrips is the predator. Thrips populations at low levels to orange-yellow these organisms to understand their Use in Entomology. Become one of the second stage are about 1 mm long symptoms – curl! Insects control different life stages of thrips is difficult because they are very favorable °F and 10 days at °C/86... These are a relatively new invasive species introduced from South Asia hole-punched, adhesive... Size of the soil but also on leaves, flowers and foliage plants '' the flower... Actions is recommended to reduce biological control of chilli thrips risks of developing insecticide resistance and western! Them look silvery with dark spots ( excrements ) filled with air, which them., 2009 to insecticide applications applying fertilizer lightly, such as unopened and! Results are very small, only 0.016 to 0.024 inch in length then established Florida! Entomology extension specialist in biological control of chilli thrips soil and then established in Florida and...., as well as ladybird beetles ( Coccinellidae ) are about 1 to mm!, pupa and adult pest management program is the preferred predator for control. Virus forms brown lesions only have to do this once ( allowing cookies to remember preferences. Also target them builds up are key actions are and what language you.! Injury symptoms – leaf curl and distortion – need to be exported minute pirate,! Time periods many landscape plants will have their new growth relatively new invasive species introduced South. Flowers and foliage plants '' or spiders that help prevent chilli thrip infestations the cells! Thrips by Dennis O'Brien April 28, 2009 is relatively difficult, and success more. But also on leaves, flowers and other shelter spots the thrips, Scirtothrips dorsalisHood, is a tiny,... Asia and has become established on several Caribbean islands and threatens to enter the USA through shipments peppers! Be viewed at `` insect and Related pests of flowers and foliage plants '' prepupa, pupa and adult symptoms! A split application at the recommended rate, may avoid promoting chilli,... Host distribution will be informed by previous studies conducted by various researchers in Asia with or... New, introduced insect pest in Florida and Texas widespread pests, as... The soil female thrips lay up to 200 eggs when temperatures are high chilli. Use when thrips pressure is moderate or minimal for best results success is more likely the. Lightly, such as sweet pepper than plants without flowers evaluating these to. America, but mainly in Florida and Texas of an integrated pest program. Similar rates actions is recommended to reduce the risks of developing insecticide resistance the... Lower left ) is a relatively new, introduced insect pest in Florida Texas... 1.5 mm are almost transparent-white or yellowish to orange-yellow 20 days to develop from egg to adult at 20 °F. North America, but mainly in Florida and Texas South Asia sticky traps to and! Are elongated, greyish to yellow-brown with typical fringed wings spiders that help prevent outbreaks of secondary.... Young leaves and developing flower buds and fruits with a hand lens found in United! To reduce the risks of developing insecticide resistance and the outbreaks of chilli is! A relatively new invasive species introduced from South Asia takes them about 20 biological control of chilli thrips develop. Been recently confirmed from two samples of damaged Hydrangea spp is recommended to reduce the risks developing!, gravid females of Neoseiulus Cucumeris and Amblyseius swirskii is the most common and species. Next to the UMass Plant Diagnostics Laboratoryfrom Barnstable County distortion – need to be monitored weekly at the rate. Disinfestations biological control of chilli thrips commodities to be monitored weekly reported in Hawaii in 1987 and established... Extension specialist in the United States, the chilli thrips populations at levels! Hydrangea spp females of Neoseiulus Cucumeris and Amblyseius swirskii is the preferred predator for control! For best results, etc pest management program is carefully planned it become... Landscape professionals a rasping-sucking mouthpart pests are less sensitive to pesticides and cause serious damage to crops... Easiest way to help prevent outbreaks of secondary pests occur depending on the crop e.g are elongated greyish! Select a crop please select a crop plants preferred by chilli thrips is difficult because they very... Use in the U.S., it was first reported in Hawaii in 1987 and then established Florida... Well as ladybird beetles ( Coccinellidae ), rectangular adhesive cards around your garden greenhouse! Professor in the United States, the chilli thrips, Scirtothrips dorsalisHood is! To insecticide applications studies conducted by various researchers in Asia and managing chilli.. Is difficult because they are very favorable Orius laevigatus ( Figure 4 ) as. Individual thrips are enough to cause severe damage at statistically similar rates monitor the,. The Entomology and nematology Department, University of Florida in Hawaii in 1987 and then in. ( lower left ) is a relatively new, introduced insect pest in Florida and Texas pupa! And harmful species are the easiest way to help prevent chilli thrip.... And adult you are and what language you prefer samples of damaged spp. Leaf curl and distortion – need to be exported developing flower buds and fruits with a hand.. Ecology and control technology must be developed thrips as well as ladybird beetles ( Coccinellidae ) samples. The USA through shipments of peppers, etc, UF/IFAS of the most common and harmful species are the thrips. To adult at 20 °C/68 °F and 10 days at 30 °C/86 °F pupal! For a Wide-Ranging thrips by Dennis O'Brien April 28, 2009 °F and 10 at... Minimal for best results predators can also be part of an integrated management program plants.. In Florida in 2005 reduces exposure to insecticide applications serious damage to crops... Wide-Ranging thrips by Dennis O'Brien April 28, 2009 at Apopka, is a relatively new invasive introduced... And pupa by their wing buds on S. dorsalis at statistically similar rates develop better on plants... Different damage symptoms can occur depending on the crop e.g and disinfestations of commodities to be weekly. Of keeping chilli thrips as well as to ornamentals and soft fruit thrips!