Foliar Insecticide Efficacy Against Western Flower Thrips in Staked Tomato, 2019

Bilbo, Tom R; Schoof, Steven C; Walgenbach, J. F.

doi:10.1093/amt/tsaa063

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, spinosad is suitable to use in rotation with other insecticides [ 64 ] and in combination with the natural enemies of the thrips [ 65 ]. The Spear ® T and Grandevo ® treatments in our study did not show satisfactory results in managing the thrips population in tomato, which is consistent with the other research findings [ 66 , 67 ]. In the present study, we revealed a low population of adult thrips and larvae on the silver reflective plastic mulches compared to the other plastic mulches and no mulch, irrespective of tomato leaves and flowers in both 2018 and 2019.…”

Section: Discussionsupporting

confidence: 91%

Integrated Effect of Plastic Mulches and Biorational Insecticides in Managing Tomato Chlorotic Spot Virus (TCSV) and Its Vector Thrips in Tomatoes

Khan,

Seal,

Zhang

et al. 2023

Insects

View full text Add to dashboard Cite

In the USA, tomato chlorotic spot virus (TCSV) was first identified in Miami-Dade County of Florida in 2012. This viral disease is transmitted by thrips (Thysanoptera: Thripidae) of different species, imposing a serious threat to the entire tomato production in the state. Both cultural and chemical control techniques could be essential tools to combat this vector-borne disease. In the present two-year-long study, we determined the effect of different types of plastic mulches and biorational insecticides on managing thrips and TCSV. Results from the leaf and flower samples showed a significantly lower adult thrips population in Entrust®SC treated tomatoes than in other treated and untreated tomatoes in 2018. Silver on black and silver on white reflective plastic mulches significantly reduced the adult thrips population in 2018. In both study years, marketable yield was significantly higher in tomatoes treated with Entrust®SC and reflective plastic mulches than in other treatments. The incidence of TCSV was significantly reduced in tomatoes treated with Entrust®SC and reflective plastic mulches than the untreated control in 2018. Marketable yield was negatively correlated with the thrips population, as observed from the Pearson correlation coefficient analysis. This research describes a potentially viable management program for thrips and thrips-transmitted TCSV.

show abstract

Section: Discussionsupporting

confidence: 91%

Integrated Effect of Plastic Mulches and Biorational Insecticides in Managing Tomato Chlorotic Spot Virus (TCSV) and Its Vector Thrips in Tomatoes

Khan,

Seal,

Zhang

et al. 2023

Insects

View full text Add to dashboard Cite

show abstract

Synergistic effect of Metarhizium flavoviride and Serratia marcescens on western flower thrips, Frankliniella occidentalis Pergande (Thysanoptera: Thripidae)

Koç,

Bekircan Eski,

Güllü

et al. 2024

Egypt J Biol Pest Control

View full text Add to dashboard Cite

Background The western flower thrips (WFT), Frankliniella occidentalis Pergande (Thysanoptera: Thripidae), is an important polyphagous pest in both greenhouses and fields. Due to its wide range of host plants and short life cycle, the pest causes overwhelming damage and has led to the destruction of many crops. The combined use of entomopathogenic microorganisms could be an important option to overcome the difficulties in controlling WFT. The virulence of thirty local entomopathogen isolates was tested on WFT, and possibilities of combined application for WFT control were investigated. Results All isolates were virulent for both the second larval stage and the adult stage of WFT. Serratia marcescens Se9 was the most virulent bacterial isolate with a mortality of 54 and 69.6% against the second larval and the adult stages of WFT, respectively. The LC50 values of the Se9 isolate were determined to be 4 × 106 cfu/ml for the second larval stage and 6.3 × 106 cfu/ml for the adult stage. Among the fungal isolates, Metarhizium flavoviride As18 showed a mortality rate of 92.1 and 74.5% against the second larval and the adult stages of WFT, respectively. The LC50 value was determined to be 1.6 × 104 and 7.1 × 104 conidia/ml for the second larval and adult stages of WFT, respectively. The combined application of S. marcescens Se9 and M. flavoviride As18 at different concentrations generally performed better than single treatments, indicating an additive or synergistic interaction. While the single treatment with S. marcescens and M. flavoviride caused a mortality of 20.4 and 49.5%, respectively, the combined application (S. marcescens LC25; M. flavoviride 100 × LC25) resulted in a mortality of 95.7% of the second larval stage. Similarly, the combined application caused 96% mortality in the adult stage, while the single treatments with S. marcescens and M. flavoviride caused 11.3 and 61.3% mortality, respectively. Conclusion The study showed that the combined application of S. marcescens (LC25) and M. flavoviride (LC25 × 100) resulted in synergism against both second larval and adult stages of WFT. This is the first study to show that the combination of S. marcescens and M. flavoviride had synergistic potential to suppress the WFT population. In future studies, these microorganisms should be formulated together as biopesticides and tested under greenhouse or field conditions.

show abstract

Foliar Insecticide Efficacy Against Western Flower Thrips in Staked Tomato, 2019

Cited by 2 publications

References 0 publications

Integrated Effect of Plastic Mulches and Biorational Insecticides in Managing Tomato Chlorotic Spot Virus (TCSV) and Its Vector Thrips in Tomatoes

Integrated Effect of Plastic Mulches and Biorational Insecticides in Managing Tomato Chlorotic Spot Virus (TCSV) and Its Vector Thrips in Tomatoes

Synergistic effect of Metarhizium flavoviride and Serratia marcescens on western flower thrips, Frankliniella occidentalis Pergande (Thysanoptera: Thripidae)

Contact Info

Product

Resources

About