The Experts below are selected from a list of 7737 Experts worldwide ranked by ideXlab platform
Hans-michael Poehling - One of the best experts on this subject based on the ideXlab platform.
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Efficacy of LED-enhanced blue Sticky Traps combined with the synthetic lure Lurem-TR for trapping of western flower thrips ( Frankliniella occidentalis )
Journal of Pest Science, 2018Co-Authors: Jacinter A. Otieno, Niklas Stukenberg, Jessica Weller, Hans-michael PoehlingAbstract:Pest monitoring is an important tool for successful integrated pest management programmes. Blue Sticky Traps are important for monitoring western flower thrips, Frankliniella occidentalis, in greenhouses. However, blue Sticky Traps have three major weak points: (1) efficacy depends on reflection of light, which varies in intensity with fluctuating light conditions (season, diurnal rhythmic pattern), (2) they reflect broad wavelength pattern not optimally matching with maximum sensitivity of WFT photoreceptors, and (3) they offer no olfactory cues which are important for thrips orientation. This study explored the most attractive wavelength range for WFT using broad range of narrow-bandwidth light-emitting diodes (LEDs) in order to improve the attractiveness of blue Sticky Traps. Subsequently, trapping efficacy of the most attractive blue LED in combination with blue Sticky trap and addition of an attractive lure (Lurem-TR) was evaluated in flight cages under greenhouse conditions. Release-capture studies revealed that LEDs with peak emission of 445 nm were clearly more effective than conventional blue Sticky Traps. In choice experiments, up to 2.7-fold and in no-choice experiment up to 2.1-fold more WFT were captured by LED-blue Sticky Traps compared to conventional reflecting blue Sticky Traps. Lurem-TR improved the performance of blue Sticky Traps and LED-blue Sticky Traps 2.3-fold and 2.0-fold, respectively, as compared to those without Lurem-TR. The addition of LEDs and kairomone lure to blue Sticky Traps seems promising for improving WFT trapping, specifically at low population densities especially during early infestation. However, these results should be further validated under more complex, large field conditions.
Murray B. Isman - One of the best experts on this subject based on the ideXlab platform.
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Trapping whiteflies? A comparison of greenhouse whitefly (Trialeurodes vaporariorum) responses to trap crops and yellow Sticky Traps
Pest management science, 2011Co-Authors: Tara Moreau, Murray B. IsmanAbstract:BACKGROUND: Greenhouse whiteflies, Trialeurodes vaporariorum (Westwood), are notorious pests that, through the reduction of crop yields and excretion of honeydew, cause significant economic losses for sweet pepper (Capsicum annuum L.) growers. Chemical and biological controls are the two most common forms of whitefly management in greenhouses. Consequently, insecticide resistance and inadequate control have rejuvenated interest in alternative tactics. In the present study, whitefly responses to trap crops (eggplant and squash) and yellow Sticky Traps were compared in order to identify the most effective Traps for dispersing and resident adults. RESULTS: Results indicated that yellow Sticky Traps were most effective at trapping adult whiteflies. Significantly more dispersing whiteflies were recorded on eggplant than on squash trap crops. None of the Traps significantly reduced adult populations on the main crops (peppers) compared with the control. However, yellow Sticky Traps did significantly reduce oviposition on peppers. CONCLUSIONS: Adult whiteflies were most effectively trapped on yellow Sticky Traps followed by eggplant trap crops. Further study of whitefly trapping using visual cues may enhance trapping management. Specifically, research combining yellow Sticky Traps with other control strategies is recommended. Copyright © 2011 Society of Chemical Industry
William D. J. Kirk - One of the best experts on this subject based on the ideXlab platform.
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reduced translucency and the addition of black patterns increase the catch of the greenhouse whitefly trialeurodes vaporariorum on yellow Sticky Traps
PLOS ONE, 2018Co-Authors: Clare Sampson, Anca D Covaci, J G C Hamilton, Nayem Hassan, Shakir Alzaidi, William D. J. KirkAbstract:The greenhouse whitefly Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) is a pest of a wide range of vegetable and ornamental crops in greenhouses around the world. Yellow Sticky Traps are highly attractive to flying adults and so are frequently used to monitor the pest. Our aim was to test whether changes in trap translucency or the addition of printed black patterns could increase the catch on yellow Sticky Traps in greenhouses. Field trials were carried out in commercial crops of strawberry and tomato under glass over three years. Reduced trap translucency increased trap catches by a factor of 1.5 to 7.0 and the catch increased significantly for both females and males. Spectrometer measurements showed that the increased catch was consistent with an increased landing stimulus from a colour opponency mechanism i.e. the ratio of energy from 500–640 nm to the energy from 300–500 nm. Printed black patterns increased trap catches on specific types of trap, by a factor of 1.4 to 2.3, and the catch increased significantly for both females and males. The patterns increased trap catch on moderately translucent Traps, but decreased trap catch on less translucent Traps. The evidence points to a contrast/edge effect of pattern, but laboratory experiments are needed to clarify this. Exploitation of these translucency and pattern effects could improve the efficacy of yellow Traps for monitoring and mass trapping in crops.
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Catches of Thrips palmi and Frankliniella intonsa on blue Sticky Traps with and without the test compound.
2014Co-Authors: Sudhakar V. S. Akella, Keith F. A. Walters, William D. J. Kirk, Tamotsu Murai, James G. C. HamiltonAbstract:aTotal number of individuals caught followed, in brackets, by the mean catch per trap ±SE for the log-transformed data. Note that these standard errors include the variance between trap pairs and also between trials for the analysis of totals. They are therefore not appropriate for comparisons between test and control means. These extra variances are allowed for in the analysis of variance. Response of Thrips palmi and Frankliniella intonsa to blue Sticky Traps treated with lures loaded with 30 µg (R)-lavandulyl 3-methyl-3-butenoate in 30 µl hexane (test) or 30 µl hexane (control). Key to results of analysis of variance across trials:*** = P
Jacinter A. Otieno - One of the best experts on this subject based on the ideXlab platform.
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Efficacy of LED-enhanced blue Sticky Traps combined with the synthetic lure Lurem-TR for trapping of western flower thrips ( Frankliniella occidentalis )
Journal of Pest Science, 2018Co-Authors: Jacinter A. Otieno, Niklas Stukenberg, Jessica Weller, Hans-michael PoehlingAbstract:Pest monitoring is an important tool for successful integrated pest management programmes. Blue Sticky Traps are important for monitoring western flower thrips, Frankliniella occidentalis, in greenhouses. However, blue Sticky Traps have three major weak points: (1) efficacy depends on reflection of light, which varies in intensity with fluctuating light conditions (season, diurnal rhythmic pattern), (2) they reflect broad wavelength pattern not optimally matching with maximum sensitivity of WFT photoreceptors, and (3) they offer no olfactory cues which are important for thrips orientation. This study explored the most attractive wavelength range for WFT using broad range of narrow-bandwidth light-emitting diodes (LEDs) in order to improve the attractiveness of blue Sticky Traps. Subsequently, trapping efficacy of the most attractive blue LED in combination with blue Sticky trap and addition of an attractive lure (Lurem-TR) was evaluated in flight cages under greenhouse conditions. Release-capture studies revealed that LEDs with peak emission of 445 nm were clearly more effective than conventional blue Sticky Traps. In choice experiments, up to 2.7-fold and in no-choice experiment up to 2.1-fold more WFT were captured by LED-blue Sticky Traps compared to conventional reflecting blue Sticky Traps. Lurem-TR improved the performance of blue Sticky Traps and LED-blue Sticky Traps 2.3-fold and 2.0-fold, respectively, as compared to those without Lurem-TR. The addition of LEDs and kairomone lure to blue Sticky Traps seems promising for improving WFT trapping, specifically at low population densities especially during early infestation. However, these results should be further validated under more complex, large field conditions.
Tara Moreau - One of the best experts on this subject based on the ideXlab platform.
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Trapping whiteflies? A comparison of greenhouse whitefly (Trialeurodes vaporariorum) responses to trap crops and yellow Sticky Traps
Pest management science, 2011Co-Authors: Tara Moreau, Murray B. IsmanAbstract:BACKGROUND: Greenhouse whiteflies, Trialeurodes vaporariorum (Westwood), are notorious pests that, through the reduction of crop yields and excretion of honeydew, cause significant economic losses for sweet pepper (Capsicum annuum L.) growers. Chemical and biological controls are the two most common forms of whitefly management in greenhouses. Consequently, insecticide resistance and inadequate control have rejuvenated interest in alternative tactics. In the present study, whitefly responses to trap crops (eggplant and squash) and yellow Sticky Traps were compared in order to identify the most effective Traps for dispersing and resident adults. RESULTS: Results indicated that yellow Sticky Traps were most effective at trapping adult whiteflies. Significantly more dispersing whiteflies were recorded on eggplant than on squash trap crops. None of the Traps significantly reduced adult populations on the main crops (peppers) compared with the control. However, yellow Sticky Traps did significantly reduce oviposition on peppers. CONCLUSIONS: Adult whiteflies were most effectively trapped on yellow Sticky Traps followed by eggplant trap crops. Further study of whitefly trapping using visual cues may enhance trapping management. Specifically, research combining yellow Sticky Traps with other control strategies is recommended. Copyright © 2011 Society of Chemical Industry
