Surface Tension-Dependent Surfactant Toxicity on the Green Peach Aphid, Myzus persicae (SULZER) (Hemiptera: Aphididae)

Imai, Toshihiro; Tsuchiya, Satoshi; Morita, Kenji; Fujimori, Takahiro

doi:10.1303/aez.29.389

Cited by 40 publications

(27 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Silwet L-77 has been reported to be effective in controlling mites, aphids, tephritids, mealybugs, armyworms, and citrus leafminer (Dentener & Peetz 1992;Imai et al 1994Imai et al , 1995Chandler 1995;Purcell & Schroeder 1996;Wood et al 1997;Shapiro et al 1998;Cowles et al 2000;Tipping et al 2003). Under laboratory, greenhouse, and field conditions, Silwet L-77 alone was toxic to young D. citri nymphs and increased the toxicity of imidacloprid and abamectin at lowerthan-label rates (Srinivasan et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Toxicity of Imidacloprid-Treated Spheres to Caribbean fruit fly, Anastrepha suspensa (Diptera: Tephritidae) and Its Parasitoid Diachasmimorpha longicaudata (Hymenoptera: Braconidae) in the Laboratory

Liburd¹,

Holler²,

Moses³

2004

Journal of Economic Entomology

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Toxicity of Imidacloprid-Treated Spheres to Caribbean fruit fly, Anastrepha suspensa (Diptera: Tephritidae) and Its Parasitoid Diachasmimorpha longicaudata (Hymenoptera: Braconidae) in the Laboratory

Liburd¹,

Holler²,

Moses³

2004

Journal of Economic Entomology

View full text Add to dashboard Cite

“…Another, less recognized feature of these surfactants is their direct or indirect toxicity to soft-bodied insects and mites. Aqueous solutions of a widely used organosilicone surfactant, Silwet L-77, are toxic to twospotted spider mites, various aphids, citrus leafminers, tephritid pupae, and armyworm larvae (Salem and Salem 1983;Dentener and Peetz 1992;Imai et al 1994Imai et al , 1995Chandler 1995;Purcell and Schroeder 1996;Wood et al 1997;Shapiro et al 1998).…”

mentioning

confidence: 99%

“Inert” Formulation Ingredients with Activity: Toxicity of Trisiloxane Surfactant Solutions to Twospotted Spider Mites (Acari: Tetranychidae)

Cowles¹,

Cowles²,

McDermott³

et al. 2000

J Econ Entomol

View full text Add to dashboard Cite

Organosilicone molecules are important surfactant ingredients used in formulating pesticides. These methylated silicones are considered inert ingredients, but their superior surfactant properties allow them to wet, and either suffocate or disrupt important physiological processes in mites and insects. Aqueous solutions of the tri-siloxane surfactants Silwet L-77, Silwet 408, and Silwet 806 were bioassayed against adult female two-spotted spider mites, Tetranychus urticae Koch, with leaf dip methods to compare their toxicity with organosilicone molecules containing bulkier hydrophobic components. All three tri-siloxanes in aqueous solutions were equivalently toxic (LC50 = 5.5-8.9 ppm), whereas Silwet L-7607 solutions were less toxic (LC50 = 4,800 ppm) and Silwet L-7200 was nontoxic to mites. In another experiment, the toxicity of Silwet L-77 was affected by the wettability of leaf surfaces. The LC50 shifted from 22 to 84 ppm when mites were tested on bean and strawberry leaf disks, respectively. Droplet spreading on paraffin and surface tension were both related to the toxicity of surfactant solutions. Surface tensions of solutions below 23 mN/m caused > 90% mite mortality in leaf dip bioassays. A field test of Conserve SC and its formulation blank, with and without Dyne-Amic adjuvant (a vegetable oil-organosilicone surfactant mixture) revealed that Dyne-Amic had the greatest miticidal contribution, reducing mite populations by 70%, followed by formulation inactive ingredients. Spinosad, the listed active ingredient in Conserve, only contributed miticidal activity when synergized by Dyne-Amic. Researchers should include appropriate surfactant or formulation blank controls when testing insecticides or miticides, especially when using high spray volumes.

show abstract

Section: Discussionmentioning

confidence: 99%

Toxicity of Organosilicone Adjuvants and Selected Pesticides to the Asian Citrus Psyllid (Hemiptera: Psyllidae) and Its Parasitoid Tamarixia radiata (Hymenoptera: Eulophidae)

Cocco

Hoy

2008

flen

View full text Add to dashboard Cite

Surface Tension-Dependent Surfactant Toxicity on the Green Peach Aphid, Myzus persicae (SULZER) (Hemiptera: Aphididae)

Cited by 40 publications

References 1 publication

Toxicity of Imidacloprid-Treated Spheres to Caribbean fruit fly, Anastrepha suspensa (Diptera: Tephritidae) and Its Parasitoid Diachasmimorpha longicaudata (Hymenoptera: Braconidae) in the Laboratory

Toxicity of Imidacloprid-Treated Spheres to Caribbean fruit fly, Anastrepha suspensa (Diptera: Tephritidae) and Its Parasitoid Diachasmimorpha longicaudata (Hymenoptera: Braconidae) in the Laboratory

“Inert” Formulation Ingredients with Activity: Toxicity of Trisiloxane Surfactant Solutions to Twospotted Spider Mites (Acari: Tetranychidae)

Toxicity of Organosilicone Adjuvants and Selected Pesticides to the Asian Citrus Psyllid (Hemiptera: Psyllidae) and Its Parasitoid Tamarixia radiata (Hymenoptera: Eulophidae)

Contact Info

Product

Resources

About