Onion Thrips (Thysanoptera: Thripidae) and Their Management in the Treasure Valley of the Pacific Northwest

Reitz, Stuart R.

doi:10.1653/024.097.0202

Cited by 9 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mean marketable yield from the best performing treatments, which had the greatest effect in reducing the thrips population, increased the yield of onion with higher profitability. Many studies have reported that higher bulb yields were obtained with insecticides that reduced the density of thrips (Gachu et al 2012;Pandey et al 2013;Reitz 2014). Yield obtained from λ-cyhalothrin was similar to untreated control in both seasons, which had little effect on thrips population in this study.…”

Section: Discussionsupporting

confidence: 51%

“…The use of insecticides is the most common management tactic for onion thrips infestations in Ethiopia as it is elsewhere (Reitz 2014;Gill et al 2015). Indiscriminate application of insecticides against onion thrips in onion is a common practice in the Rift Valley of Ethiopia (Banchiamlak et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Thrips can rapidly develop resistance to insecticides which results in the rapid loss of effectiveness of new insecticides (Reitz 2014). Insecticides resistance has been documented in a number of chemical classes, including the organochlorines, organophosphates, carbamates, pyrethroids and spinosyns (Bielza et al 2007;Herron et al 2008;Nault et al 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Insecticide resistance management against thrips (Thysanoptera: Thripidae) on onion in the central Rift Valley of Ethiopia

Negash

Azerefegn

Ayalew

2020

Int J Trop Insect Sci

View full text Add to dashboard Cite

Two field experiments were conducted in the Central Rift Valley of Ethiopia in the hot and cool dry seasons of 2016/2017 with the objective to develop an insecticide resistance management program on thrips infesting onion. The first experiment dealt with the evaluation of four different insecticides namely profenofos, λ-cyhalothrin, imidacloprid, and spinetoram in different sequences on thrips population and their effect on yield. The second experiment examined the effect of admixing the surfactant organosilicone with imidacloprid, spinetoram and dimethoate. A Randomized Complete Block Design with three replications was used for both experiments. Data on number of thrips, bulb yield and economic returns were collected. The insecticide imidacloprid and spinetoram resulted in fewer numbers of thrips and higher yields than profenofos and λ-cyhalothrin. Application of the more effective insecticides when the thrips population was high followed by less effective insecticides resulted in better control and higher economic return. Surfactant added insecticides gave a fewer numbers of thrips and higher yields than the corresponding insecticides applied without surfactant. The sequential application of spinetoram and imidacloprid with less effective λ-cyhalothrin and profenofos by mixing with adjuvant are recommended for thrips control as an integral component of thrips management in the Central Rift Valley of Ethiopia.

show abstract

Section: Discussionsupporting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Insecticide resistance management against thrips (Thysanoptera: Thripidae) on onion in the central Rift Valley of Ethiopia

Negash

Azerefegn

Ayalew

2020

Int J Trop Insect Sci

View full text Add to dashboard Cite

show abstract

“…Over the past several years in the United States, severe losses in onion bulb yield attributed to T. tabaci have become less common because newer and more effective insecticides have been identified and registered on onion Hessney 2006, 2011;Groves et al 2013). Moreover, new information has been generated to improve T. tabaci management in onion via applying insecticides based on action thresholds for maximum efficacy and efficiency (Nault and Shelton 2010), following specific sequences of insecticide products applied during the season (Byrne and Szendrei 2013, Nault et al 2014, Reitz 2014, and using surfactants coapplied with insecticides . Despite these advancements in onion IPM, many growers continue to make insecticide applications on a weekly basis, rather than using action thresholds, because studies are lacking that compare levels of thrips control and marketable bulb yield following the two approaches.…”

mentioning

confidence: 99%

“…a Letters A, B, C, and D refer to the following insecticides: spirotetramat (Movento), abamectin (Agri-Mek SC), methomyl (Lannate LV), and spinetoram (Radiant SC), respectively.Table2. Summary statistics (Type 3 tests of fixed effects) for several response variables that were impacted by different insecticide treatment programs used to manage T. tabaci infestations on the thrips-resistant onion cultivar, 'Advantage', and thrips-susceptible onion cultivar,'Santana', in Elba, NY, from 2012-2014 …”

mentioning

confidence: 99%

Evaluating an Action Threshold-Based Insecticide Program on Onion Cultivars Varying in Resistance to Onion Thrips (Thysanoptera: Thripidae)

Nault¹,

Huseth²

2016

J Econ Entomol

View full text Add to dashboard Cite

Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), is a highly destructive pest of onion, Allium cepa L., and its management relies on multiple applications of foliar insecticides. Development of insecticide resistance is common in T. tabaci populations, and new strategies are needed to relax existing levels of insecticide use, but still provide protection against T. tabaci without compromising marketable onion yield. An action threshold-based insecticide program combined with or without a thrips-resistant onion cultivar was investigated as an improved approach for managing T. tabaci infestations in commercial onion fields. Regardless of cultivar type, the average number of insecticide applications needed to manage T. tabaci infestations in the action-threshold based program was 4.3, while the average number of sprays in the standard weekly program was 7.2 (a 40% reduction). The mean percent reduction in numbers of applications following the action threshold treatment in the thrips-resistant onion cultivar, 'Advantage', was 46.7% (range 40-50%) compared with the standard program, whereas the percentage reduction in applications in action threshold treatments in the thrips-susceptible onion cultivar, 'Santana', was 34.3% (range 13-50%) compared with the standard program, suggesting a benefit of the thrips-resistant cultivar. Marketable bulb yields for both 'Advantage' and 'Santana' in the action threshold-based program were nearly identical to those in the standard program, indicating that commercially acceptable bulb yields will be generated with fewer insecticide sprays following an action threshold-based program, saving money, time and benefiting the environment.

show abstract

Insect Pests Infestation During Field and Storage of Fruits and Vegetables

Ansari

Basri

Shekhawat

2019

Health and Safety Aspects of Food Processing Technologies

View full text Add to dashboard Cite

Onion Thrips (Thysanoptera: Thripidae) and Their Management in the Treasure Valley of the Pacific Northwest

Cited by 9 publications

References 17 publications

Insecticide resistance management against thrips (Thysanoptera: Thripidae) on onion in the central Rift Valley of Ethiopia

Insecticide resistance management against thrips (Thysanoptera: Thripidae) on onion in the central Rift Valley of Ethiopia

Evaluating an Action Threshold-Based Insecticide Program on Onion Cultivars Varying in Resistance to Onion Thrips (Thysanoptera: Thripidae)

Insect Pests Infestation During Field and Storage of Fruits and Vegetables

Contact Info

Product

Resources

About