Gladiolus Thrips Research Articles

Effectiveness of Some Chemical Pesticides Against Arthropod Pests of Ornamental Plant

The study was conducted with seven chemical pesticides to control the arthropod pests of some ornamental plants during November 2017 to May 2018 at Gazipur in Bangladesh. Pesticides were applied following company recommended dose, more than recommended dose, farmers’ practicing dose and below farmers’ practicing dose. The pesticides Actara 240SC (Thiamethoxam) and Abom 1.8EC (Abamectin) were applied @ 1.0, 1.25 (farmers’ practice), 1.5 (recommended) and 1.75 ml/L water on rose plants to control aphid and spider mite. Effectiveness of Roxin 40 EC (Dimethoate) @ 0.5, 0.75 (farmers’ practice), 1.0 (recommended) and 1.25 ml/L water was evaluated against aphid attacking tuberose. Actara 25 WG (Thiamethoxam) @ 0.1, 0.2(farmers’ practice), 0.25 (recommended) and 0.3 g/L water was sprayed to control marigold aphid. Tundra 20 SP (Acetamiprid 20%) was sprayed to control rose thrips @ 0.25, 0.5 (farmers’ practice), 0.75 (recommended) and 1.0 g/L water. Effectiveness of Liquor 1.8 EC (Abamectin) against gladiolus thrips was tested @ 1.75, 2.0 (farmers’ practice), 2.5 (recommended) and 2.75ml/L water. Feniton 50 EC (Fenitrothion) was applied to control dahlia mealy @ 1.5, 1.75 (farmers’ practice), 2.0 (recommended) and 2.5 ml/L water. Abundance of the arthropod pests was compared with control (untreated plant) at 1, 3 and 7 days after treatment. The tested pesticides significantly reduced pest population and the recommended dose of the pesticides revealed higher efficacy than that of farmers’ practice.
 Bangladesh J. Agril. Res. 45(3): 261-268, September 2020

Thrips simplex (gladiolus thrips)

Thrips simplex (gladiolus thrips)

Abundance of sucking insect pests on some flowering plants in relation to weather parameters

The study was conducted from November 2017 to May 2018 in the experimental field at Gazipur, Bangladesh to investigate the incidence of sucking pests namely gladiolus thrips Teniothrips simplex, tuberose aphid Aphis craccivora, marigold aphid Neotoxoptera oliveri, and dahlia mealybug Plannococcus citri on their cultivated host plants in relation to temperature, relative humidity and rainfall. Results showed that the abundance of gladiolus thrips, tuberose aphid, marigold aphid and dahlia mealy bug reached the peak in the 3rd week of January, 3rd week of February, 1st week of January and 1st week of February, respectively. Among the weather factors, temperature had significant negative impact on the abundance of gladiolus thrips, marigold aphid and tuberose aphid, whereas rainfall showed significant negative influence only on marigold aphid. Multiple linear regression analysis showed that weather variables collectively predicted 55.9%, 75.9%, 44.5%, and 34.6% abundances of gladiolus thrips, marigold aphid, tuberose aphid and dahlia mealybug, respectively. Bangladesh J. Sci. Ind. Res.56(4), 241-248, 2021

Thrips Management Program for Horticultural Crops

Among the 5,500 (or more) well-described species of thrips worldwide, nearly 1% are known as economically important pests. Because these tiny pests can feed on multiple plants, their damage potential to nursery and greenhouse production is immense: thrips inflict millions of dollars loss every year. Thrips hide easily in tiny spaces, reproduce rapidly, and can survive in a lot of climates. And they are invisibly small! Thrips infestations present a huge problem in the regional and international trade of plant materials and products, due to the quarantine risks and damage associated with several species in the order. This 7-page fact sheet presents a program to manage important thrips pests, including western flower thrips (Frankliniella occidentalis), chilli thrips (Scirtothrips dorsalis), weeping fig thrips (Gynaikothrips uzeli), gladiolus thrips (Thrips simplex), and privet thrips (Dendrothrips ornatus) known to damage several horticultural crops of economic importance in the United States. The publication will help growers take appropriate measures to minimize economic damage. Written by Vivek Kumar, Garima Kakkar, Cristi Palmer, Cindy L. McKenzie, and Lance S. Osborne, and published by the UF Department of Entomology and Nematology, September 2016. ENY-987/IN1145: Thrips Management Program for Horticultural Crops (ufl.edu)

On the Occurrence of the Introduced Pest Thrips simplex (Morison 1930) (Thysanoptera: Thripidae) in Slovakia

Abstract Exotic species introduction has recently increased European insect diversity in accordance with global climate change and international biological commodity trade, often with serious environmental and economic consequences for natural ecosystems as well as urban and farmland area. This short communication deals with the first official faunistic record of the gladiolus thrips Thrips simplex (Morison, 1930) (Thysanoptera, Thripidae) in Slovakia.

EFFECT OF INFESTATIONWITH GLADIOLUS THRIPS, THRIPS SIMPLEX (MORISON) ON THEVASE LIFE PERIOD OF GLADIOLUS FLOWERS

experiments were carried out to study the effect of insect infestation by gladiolus thrips, Thrips simplex ( Morison ) on the vase life period of gladiolus flowers after picking under glasshouses condition and flowers contents specifically two elements (sugar and protein) which correlate with vase life period. Morevore effect of infestation with this insect on the interior tissues of the gladiolus flowers petals was also conducted. Experiments were done in El-Orman garden, Giza Governorate throughout season 2014. The vase life period of the infected gladiolus flowers withT.simplex ranged from between 3-5 days while the vase life period of non-infected flowers ranged between of 7-9 days. Results indicated that the total soluble sugar and total protein were significantly lowerin different flowercolures of gladiolus (yellow, red, pink and white) infested with gladiolus thrips, T. simplex compared with control. Also, results showed that there werechanges in protein banding patterns in petals of gladiolus flowers corresponded with infectionby T. simplex.

Susceptibility to gladiolus thrips (Thrips simplex[Morison]) in four different coloured gladiolus cultivars

The gladiolus thrips (Thrips simplex) is a common pest of gladioli. The insect causes damage to leaves, flower stalks and buds by sucking. The present study was intended to investigate the susceptibility of four Gladiolus cultivars as well as the colour preference of the thrips tested on different coloured flowers of the cultivars. The experiment was carried out in 2006 at two locations in central Slovenia. After planting the corms on April, 27 and May, 2 on three occasions with successive plant stages the percentage of infested foliage surface and flowers was assessed. Of the cultivars tested, the ‘Nova Lux’ was the only cultivar suited for cultivation without insecticide application. The flowers of gladioli with a light colour (white ‘White Prosperity’, yellow ‘Nova Lux’) were less infested in comparison with cultivars with dark coloured flowers (orange ‘Hunting Song’, red ‘Oscar’).

Thrips simplex . [Distribution map

Abstract A new distribution map is provided for Thrips simplex (Morison) [Thysanoptera: Thripidae] Gladiolus thrips. Attacks gladiolus and carnation. Information is given on the geographical distribution in EUROPE, Austria, Bulgaria, Czechoslovakia, France, Germany, East Hungary, Netherlands, Norway, Romania, Sweden, United Kingdom, USSR, AFRICA, Angola, Egypt, Ethiopia, Kenya, Lesotho, Mauritius, Morocco St. Helena, South Africa, Uganda, Zimbabwe, ASIA, Burma, Hongkong, India, Indonesia, Israel, Malaysia, Saudi Arabia, AUSTRALASIA, AND PACIFIC ISLANDS, Australia, Hawaii, New Caledonia, New Zealand, Papua New Guinea, Tasmania, NORTH AMERICA, Canada, USA, Mexico.

Influence of Reflective Mulches on Infestations of Liriomyza munda in Snap Bean Foliage13

Kring (1964) and Smith et at (1964) demonstrated that aphids are repelled by reflective aluminum surfaces, and this repellency was shown to be useful in reducing the incidence of aphid-borne virus diseases in squash (Moore et at 1964) and gladiolus (Johnson et al. 1967, Smith and Webb 1968). In addition, the aluminum repelled flower thrips, Frankliniella tritici (Fitch) (Ota and Smith 1965) and gladiolus thrips, Taeniothrips simplex (Morison) (Smith et al. 1972). Wolfenbarger and Moore (1968) reported that aluminum foil repelled green peach aphids, Myzus persicae (Sulzer), and leafminers, Liriomyza sp., in squash and tomato plots, but that honey bees, Apis mellifera L., and pickleworms, Diaphania nitidalis (Stoll), were attracted to the aluminum-mulched squash plots. Also, we (Smith and Webb 1969) found that melon aphids, Aphis gossypii Glover, were attracted to aluminum-mulched cucumber and muskmelon. Thus, though some insects are repelled by aluminum-mulched plots, other insect species may be attracted.

Repellent Mulches for Control of the Gladiolus Thrips 1

Reflective mulches reduced the aphid-borne cucumber mosaic virus in gladiolus by repelling the vectors, winged aphids (Aphididae) (Johnson et al. 1967) and also reduced the number of flower thrips, Frankliniella tritici (Fitch), and their damage to outdoor roses (Ota and Smith 1968). Therefore, experiments were conducted at Beltsville, Md., in 1970 and 1971 to test the repellency of aluminum and black-plastic soil mulches against the gladiolus thrips, Taeniothrips simplex (Morison), which damages the flowers.

Control with Dichlorvos of Gladiolus Thrips on Bulbs in Storage2

Control with Dichlorvos of Gladiolus Thrips on Bulbs in Storage2

DDT and Other Synthetics for Control of Gladiolus Thrips

DDT and Other Synthetics for Control of Gladiolus Thrips

Substitutes for Tartar Emetic and Brown Sugar in the Control of the Gladiolus Thrips

Substitutes for Tartar Emetic and Brown Sugar in the Control of the Gladiolus Thrips

Field Control of the Gladiolus Thrips

Field Control of the Gladiolus Thrips

Tartar Emetic as a Field Spray Against the Gladiolus Thrips

Tartar Emetic as a Field Spray Against the Gladiolus Thrips

Laboratory Studies on Toxicity of Nicotine and Soap to Gladiolus Thrips and Onion Thrips: Taeniothrips Simplex (Morison), Thrips Tabaci Lindeman

Laboratory Studies on Toxicity of Nicotine and Soap to Gladiolus Thrips and Onion Thrips: Taeniothrips Simplex (Morison), Thrips Tabaci Lindeman

Cold Storage as Control for Gladiolus Thrips

Journal Article Cold Storage as Control for Gladiolus Thrips Get access R. H. Nelson R. H. Nelson U.S.D.A., Bureau of Entomology and Plant Quarantine Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 29, Issue 2, 1 April 1936, Pages 389–393, https://doi.org/10.1093/jee/29.2.389 Published: 01 April 1936

Developments in Bulb Pest Control with Special Reference to Lily Thrips, Gladiolus Thrips, and Narcissus Flies

Developments in Bulb Pest Control with Special Reference to Lily Thrips, Gladiolus Thrips, and Narcissus Flies

Spraying to Control the Gladiolus Thrips, Taeniothrips Gladioli M & S , in Michigan for the Season of 19321

Contact sprays including lead arsenate and glue are found to be more effective in controlling the gladiolus thrips than those without. The liberal use of water during dry weather and the use of fertilizer containing powdered naphthalene give favorable indications.

Field Control of the Fladiolus Thrips (Taeniothrips Giadioli M. & S.)

Paris green-brown sugar spray, a lead arsenate combination spray, and nicotine tannate. as well as three other sprays, were tested, each on 15 small plots during the 1932 season (8 applications at weekly intervals). Each small plot contained two red varieties of gladiolus, Crimson Glow and Brilliant, which had been uniformly infested with the gladiolus thrips. Paris green-brown sugar spray was by far the most efficient, not only in controlling the thrips, but also in reducing thrips injury to the flowers. Data on the number and size of flowers, foliage development, and number and size of corms harvested indicated that the pine tar oil-nicotine spray, as well as the nicotine sulfate-soap spray, especially the latter, had a distinctly injurious effect on the plants. Of the five other insecticides that were tested on a smaller scale at this same field, the white oil-nicotine spray was most effective, but this did not approach the Paris green-brown sugar spray in efficiency. A total of 14 insecticides, including all the above, were tested at another field for their effect on uninfested gladiolus (variety Alice Tiplady). Only the nicotine sulfate-soap spray had any distinctly injurious effect (as evidenced by flower and corm production). Preliminary experiments indicated that one or two applications of naphthalene, paradichlorobenzene, tobacco dust, carbon disulphide emulsion, or ethylene dichloride emulsion, applied to the soil just after planting corms, would not be effective for controlling the thrips. Naphthalene and paradichlorobenzene (especially the latter) greatly retarded the growth of the plants and evidently caused some reduction in the corm and flower production. The gladiolus thrips does not appear to move about much during the growing and early blooming season, but considerable numbers do migrate, apparently close to the ground, after the flowers are cut. Muslin barriers 3 feet high erected between treated plots were apparently effective up through flowering time in reducing any slight movement of thrips from one plot to another. Observations of the predator Orius insidiosus (Say) indicated that it can kill as many as 30 thrips per day and that it might reduce thrips populations in small isolated plots.