Effects of Nitrogen and Phosphorous ertilization on Western Flower Thrips Population Level and Quality of Susceptible and Resistant Impatiens

2014 ◽  
Vol 02 (04) ◽  
Author(s):  
Yan Chen Richard Story ◽  
Michelle Samuel-Foo
Keyword(s):  
Western Flower Thrips ◽  
Population Level ◽  
Flower Thrips ◽  
Thrips Population

scholarly journals AN INTEGRATED PEST MANAGEMENT APPROACH TO CONTROL OF WESTERN FLOWER THRIPS (FRANKLINIELLA OCCIDENTALIS).

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1111H-1112
Author(s):  
Marsha A. Bower ◽  
L. Michele Quinn ◽  
John M. Brown
Keyword(s):  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Body Cavity ◽  
The Body ◽  
Control Measures ◽  
Steinernema Feltiae ◽  
Management Approach ◽  
Flower Thrips ◽  
Orange Yellow ◽  
Thrips Population

Experiments were conducted to investigate the feasibility of biological control measures to control Western Flower Thrips. Thrips population and preferred trap color were examined using sticky trap tapes in 5 fluorescent colors, orange, yellow, green, blue and pink. Results indicated that pink is more effective in attracting thrips than the traditional yellow or the newly acclaimed blue sticky traps on the market now. Studies were also conducted to determine if the entomogenous nematode (Steinernema feltiae) could invade and parasitize Western Flower Thrips, and which stage of the thrips life cycle was most susceptible to parasitization. Thrips were dissected and checked for nematode invasion at 24, 48 and 72 hours after inoculation. S. feltiae was found to invade the body cavity after 24 hours in the larval stage of Western Flower Thrips resulting in death.

scholarly journals Resistance of Greenhouse, Laboratory, and Native Populations of Western Flower Thrips to Spinosad

HortScience ◽  
2005 ◽  
Vol 40 (1) ◽  
pp. 146-149 ◽  
Author(s):  
Rebecca L. Loughner ◽  
Daniel F. Warnock ◽  
Raymond A. Cloyd
Keyword(s):  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Reference Population ◽  
Population Based ◽  
Alternative Methods ◽  
Ratio Analysis ◽  
Flower Thrips ◽  
Native Populations ◽  
History Of ◽  
Thrips Population

Western flower thrips (Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)] collected from greenhouse, laboratory, and native populations were evaluated for resistance to the insecticide spinosad. Individual cut stems of transvaal daisy (Gerbera jamesonii H. Bolus ex Hook. f.) were inoculated with 25 adults from 1 of 9 thrips populations and maintained in isolation chambers. Treatments of no spray, water spray, spinosad at one-half label rate (0.41 mL·L-1) and spinosad at the recommended label rate (0.81 mL·L-1) were applied to the flowers. Three days after treatment, the number of live and dead thrips was recorded. Significantly more thrips were recovered from the control treatments than the spinosad treatments. Thrips survival varied by treatment and insect population. Based on an odds ratio analysis, the likelihood of recovering live thrips was greater in the IL-GH1 (Illinois greenhouse) population than in the NV-N1 (Nevada native) reference population for both spinosad treatments, suggesting resistance to spinosad in the IL-GH1 population. The IL-GH1 population was collected from a greenhouse regularly sprayed with spinosad whereas the NV-N1 population was collected in Incline Village, Nev., on wildflowers with no history of exposure to spinosad. This is the first documented indication of spinosad resistance in a thrips population. In comparison to the NV-N1 reference population, none of the populations collected from laboratory or native nonagricultural environments exhibited evidence of resistance to spinosad. Resistance to an insecticide with a novel mode of action, such as spinosad, indicates the necessity of rotating insecticides and implementing alternative methods of managing western flower thrips. Chemical names used: spinosad including spinosyn A and spinosyn D (Conserve SC).

scholarly journals Monitoring of Western Flower Thrips Population in a Greenhouse Tomato Crop

2012 ◽  
Vol 69 (1) ◽  
Author(s):  
Anca Dafina COVACI ◽  
Ion OLTEAN ◽  
Paul Andrei RAICA ◽  
Viorel MITRE
Keyword(s):  
Western Flower Thrips ◽  
Tomato Crop ◽  
Greenhouse Crops ◽  
Flower Thrips ◽  
Tomato Spotted Wilt ◽  
Wide Range ◽  
Yellow Traps ◽  
Important Pest ◽  
Wilt Virus ◽  
Thrips Population

Frankliniella occidentalis  (Pergande) (Thysanoptera: Thripidae) is an important pest in vegetable and ornamental greenhouse crops due their direct damage by feeding and indirect damage by vectoring Tomato Spotted Wilt Virus (TSWV). Also, is very well known that they have an extremely high resistance to a wide range of insecticide. Thus by monitoring thrips population appropriate control plans can be established. Western flower thrips was reported in all greenhouses from Cluj County (Romania). In order to assess thrips population dynamic and color preference we conducted a research in a plastic greenhouse of 8000 m 2 placed outside of Cluj-Napoca where the main cultivated crops were tomatoes ( Solanum lycopersicum ) and the main thrips pest found was western flower thirps. During the sample period pest population was monitored weekly using two methods: by counting thrips trapped on five different colored sticky cards (blue, yellow, white, red and transparent) and by a technique based on leaves tapping. Data analysis showed no correlation between traps and tapping method. Blue and yellow traps had the highest attractiveness compared with all the others colors and between those, blue proved to be the most effective.

scholarly journals 443 Resistance in Impatiens wallerana to Western Flower Thrips [Frankliniella occidentalis (Pergande)] Feeding Damage

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 470B-470
Author(s):  
B. Bejie Herrin ◽  
Daniel F. Warnock
Keyword(s):  
Plant Growth ◽  
Plant Resistance ◽  
Plant Material ◽  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Pesticide Use ◽  
Feeding Damage ◽  
Visual Evaluation ◽  
Flower Thrips ◽  
Thrips Population

Western flower thrips are an ever-increasing problem in greenhouse floriculture crops. Thrips resistance to pesticides as well as tighter regulations on pesticide use are making thrips management in the greenhouse more difficult. To improve host plant resistance, a study was conducted to determine if impatiens cultivars varied in their susceptibility to western flower thrips feeding damage. In a replicated study, nine impatiens cultivars were inoculated with about 30 thrips. Thrips were allowed to feed on individual plants during an 8-week period of growth. During plant growth, visual evaluations to estimate thrips feeding damage were conducted every 2 weeks. At the conclusion of the experiment, a final visual evaluation was made and thrips numbers were determined. Cultivars varied in estimates of thrips feeding damage. Several cultivars exhibited significantly reduced levels of thrips feeding damage. Of these cultivars, some had high thrips population levels, indicating tolerance, while other cultivars had low thrips population levels, an indication of antibiosis. One cultivar was determined to be highly susceptible to thrips feeding damage. This cultivar was so damaged by the end of the study, remaining plant material was unable to support thrips populations. Variability was found in the levels of thrips feeding damage and thrips population levels indicating the presence of tolerance and/or antibiosis. Because of detected variability, the potential for improving impatiens resistance to thrips feeding damages exists.

scholarly journals AN INTEGRATED PEST MANAGEMENT APPROACH TO CONTROL OF WESTERN FLOWER THRIPS (FRANKLINIELLA OCCIDENTALIS).

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1111h-1112
Author(s):  
Marsha A. Bower ◽  
L. Michele Quinn ◽  
John M. Brown
Keyword(s):  
Frankliniella Occidentalis ◽  
Western Flower Thrips ◽  
Body Cavity ◽  
The Body ◽  
Control Measures ◽  
Steinernema Feltiae ◽  
Management Approach ◽  
Flower Thrips ◽  
Orange Yellow ◽  
Thrips Population

Experiments were conducted to investigate the feasibility of biological control measures to control Western Flower Thrips. Thrips population and preferred trap color were examined using sticky trap tapes in 5 fluorescent colors, orange, yellow, green, blue and pink. Results indicated that pink is more effective in attracting thrips than the traditional yellow or the newly acclaimed blue sticky traps on the market now. Studies were also conducted to determine if the entomogenous nematode (Steinernema feltiae) could invade and parasitize Western Flower Thrips, and which stage of the thrips life cycle was most susceptible to parasitization. Thrips were dissected and checked for nematode invasion at 24, 48 and 72 hours after inoculation. S. feltiae was found to invade the body cavity after 24 hours in the larval stage of Western Flower Thrips resulting in death.

scholarly journals Population-Level Prevalence, Bother, and Treatment Behavior for Urinary Incontinence in an Eastern European Country: Findings from the LUTS POLAND Study

2021 ◽  
Vol 10 (11) ◽  
pp. 2314
Author(s):  
Mikolaj Przydacz ◽  
Marcin Chlosta ◽  
Piotr Chlosta
Keyword(s):  
Quality Of Life ◽  
Urinary Incontinence ◽  
Rural Areas ◽  
Eastern European Country ◽  
Population Level ◽  
Eastern European ◽  
Level Data ◽  
Urban And Rural Areas ◽  
Eastern European Countries

Objectives: Population-level data are lacking for urinary incontinence (UI) in Central and Eastern European countries. Therefore, the objective of this study was to estimate the prevalence, bother, and behavior regarding treatment for UI in a population-representative group of Polish adults aged ≥ 40 years. Methods: Data for this epidemiological study were derived from the larger LUTS POLAND project, in which a group of adults that typified the Polish population were surveyed, by telephone, about lower urinary tract symptoms. Respondents were classified by age, sex, and place of residence. UI was assessed with a standard protocol and established International Continence Society definitions. Results: The LUTS POLAND survey included 6005 completed interviews. The prevalence of UI was 14.6–25.4%; women reported a greater occurrence compared with men (p < 0.001). For both sexes, UI prevalence increased with age. Stress UI was the most common type of UI in women, and urgency UI was the most prevalent in men. We did not find a difference in prevalence between urban and rural areas. Individuals were greatly bothered by UI. For women, mixed UI was the most bothersome, whereas for men, leak for no reason was most annoying. More than half of respondents (51.4–62.3%) who reported UI expressed anxiety about the effect of UI on their quality of life. Nevertheless, only around one third (29.2–38.1%) of respondents with UI sought treatment, most of whom received treatment. Persons from urban and rural areas did not differ in the degrees of treatment seeking and treatment receiving. Conclusion: Urinary incontinence was prevalent and greatly bothersome among Polish adults aged ≥ 40 years. Consequently, UI had detrimental effects on quality of life. Nonetheless, most affected persons did not seek treatment. Therefore, we need to increase population awareness in Poland about UI and available treatment methods, and we need to ensure adequate allocation of government and healthcare system resources.

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