Field efficacy of Tolfenpyrad 15 EC against thrips, <i>Thrips palmi</i> Karny on Cucumber

Misra, H. P.; Sahu, Gouri Shankar

doi:10.5958/0974-0163.2018.00005.8

Cited by 2 publications

(3 citation statements)

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“…Our result may indicate that cyantraniliprole has low toxicity in the assay we used or that all the tested populations used here have developed resistance. For tolfenpyrad, there was also low toxicity to all tested thrips populations, as noted previously in T. palmi but in contrast to a previous report for F. occidentalis 51,52 . In summary, our results showed that cyantraniliprole and tolfenpyrad might be ineffective against these two thrips, while chlorfenapyr might have high toxicity to F. occidentalis but low toxicity to T. palmi .…”

Section: Discussionsupporting

confidence: 75%

“…For tolfenpyrad, there was also low toxicity to all tested thrips populations, as noted previously in T. palmi but in contrast to a previous report for F. occidentalis. 51,52 In summary, our results showed that cyantraniliprole and tolfenpyrad might be ineffective against these two thrips, while chlorfenapyr might have high toxicity to F. occidentalis but low toxicity to T. palmi. These species differences emphasize the need to examine the toxicity of insecticides to all pest thrips species of concern.…”

Section: Discussionmentioning

confidence: 68%

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Interspecific and intraspecific variation in susceptibility of two co‐occurring pest thrips, Frankliniella occidentalis and Thrips palmi, to nine insecticides

Shen

Chen

Cao

et al. 2023

Pest Management Science

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BACKGROUND: Field control of pest thrips mainly relies on insecticides, but the toxicity of insecticides can vary among thrips species and populations. In this study, we examined the susceptibility of multiple field populations of two thrips pests, Frankliniella occidentalis, and Thrips palmi, that often co-occur on vegetables, to nine insecticides belonging to seven subgroups.RESULTS: The highest level of variation in susceptibility among F. occidentalis populations was for spinetoram (73.92 fold difference between most resistant and most susceptible population), followed by three neonicotinoids (8.06-15.99 fold), while among T. palmi populations, it was also for spinetoram (257.19 fold), followed by emamectin benzoate, sulfoxaflor, and acetamiprid (23.64-45.50 fold). These findings suggest evolved resistance to these insecticides in some populations of the two thrips. One population of F. occidentalis had a particularly high level of resistance overall, being the most resistant for five of the nine insecticides tested. Likewise, a population of T. palmi had high resistance to all nine insecticides, again suggesting the evolution of resistance to multiple chemicals. For F. occidentalis, the LC 95 values of most populations were higher than the field-recommended dosage for all insecticides except chlorfenapyr and emamectin benzoate. For several T. palmi populations, the LC 95 values also tended to be higher than recommended dosages, except in the case of emamectin benzoate and spinetoram.CONCLUSIONS: Our study found interspecific and intraspecific variations in the susceptibility of two thrips to nine insecticides and multiple resistance in some populations, highlighting the need for ongoing monitoring and resistance management.

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Section: Discussionsupporting

confidence: 75%

Section: Discussionmentioning

confidence: 68%

Interspecific and intraspecific variation in susceptibility of two co‐occurring pest thrips, Frankliniella occidentalis and Thrips palmi, to nine insecticides

Shen

Chen

Cao

et al. 2023

Pest Management Science

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“…ha -1 recorded maximum control of thrips. Misra and Sahu (2018) reported that Tolfenpyrad 15% EC @ 150 g a.i. ha -1 was recorded as the maximum control of chilli thrips.…”

Section: Resultsmentioning

confidence: 99%

Bioefficacy of Some Newer Generation Insecticides Against Chilli Thrips, Scirtothrips dorsalis Hood

Mondal¹,

Mondal²

2022

IJBSM

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An experiment was conducted in the pre-kharif season during the months of January–June of the years 2018 and 2019 at farmer’s field at Benuria, Birbhum, in the lateritic zone of West Bengal, India. ‘Tejaswini’, a promising popular variety, was taken for the study. Four-week old plants were transplanted and plot size was 5.0×5.0 m2, in a Randomized Block Design with thirteen treatments, including control with three replications in both the seasons. Three consecutive sprayings were done at 30, 50 and 70 days after planting. The lowest population of thrips was observed in Broflanilid 20% SC @ 25 g a.i. ha-1 and it was statistically superior over Dinotefuran 20% SG @ 30 g a.i. ha-1, Profenofos 50% EC @ 500 g a.i. ha-1 and Azadirachtin 3% @ 15 g a.i. ha-1.While, non-significant differences in insect populations were recorded among Spinosad 45% SC @ 73 g a.i. ha-1, Fipronil 5% SC @ 50 g a.i. ha-1, Spirotetramat 15.31% OD @ 60 g a.i. ha-1, Tolfenpyrad 15% EC @ 150 g a.i. ha-1, Imidacloprid 17.80 % SL @ 25 g a.i. ha-1, Thiamethoxam 25% WG @ 25 g a.i. ha-1, λ-cyhalothrin 5% EC @ 15 g a.i. ha-1 and Difenthiuron 50% WP @ 300 g a.i. ha-1, respectively. The newer molecule, Broflanilid 20% SC @ 25 g a.i. ha-1 was found most efficacious against the chilli thrips among the treatments, and this molecule can be recommended to effectively manage the chilli thrips.

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Field efficacy of Tolfenpyrad 15 EC against thrips, Thrips palmi Karny on Cucumber

Cited by 2 publications

References 0 publications

Interspecific and intraspecific variation in susceptibility of two co‐occurring pest thrips, Frankliniella occidentalis and Thrips palmi, to nine insecticides

Interspecific and intraspecific variation in susceptibility of two co‐occurring pest thrips, Frankliniella occidentalis and Thrips palmi, to nine insecticides

Bioefficacy of Some Newer Generation Insecticides Against Chilli Thrips, Scirtothrips dorsalis Hood

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