Laboratory Evaluations of Plictran® Miticide Against Two-Spotted Spider Mites1

Allison, W. E.; Doty, A. E.; Hardy, James L.; Kenaga, Eugene E.

doi:10.1093/jee/61.5.1254

Cited by 21 publications

(3 citation statements)

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“…Plictran miticide, a new product containing tricyclohexyltin hydroxide, recently has been introduced and found to be extremely effective for the control of plant feeding mites, yet not harmful to predacious mites. The commercial applications of this miticide are for apples, pears, and citrus fruits (Kenaga, 1966;Allison et al, 1968).…”

Section: Literature Citedmentioning

confidence: 99%

Volatilization and Photodecomposition of Plictran Miticide

Smith¹,

Fischer²,

Axelson³

1976

J. Agric. Food Chem.

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Recently, a new organic tin product, Plictran miticide containing tricyclohexyltin hydroxide, has been developed for the control of mites in apples, pears, and citrus fruits. Photodecomposition and volatility studies were conducted with this miticide. The results indicate that tricyclohexyltin hydroxide rapidly undergoes photodecomposition, the main products being inorganic tin (80 %) with traces of dicyclohexyltin oxide, cyclohexylstannoic acid, and tricyclohexyltin hydroxide unchanged. The traces of tetracyclohexyltin which were present in the samples as an impurity were not affected by irradiation. The amount of tricyclohexyltin hydroxide depends on the length of exposure and the intensity of the sunlight. The longer the exposure and the more intense the light the more tricyclohexyltin hydroxide will be decomposed. Volatility studies indicate that tricyclohexyltin hydroxide is not volatile from the dry state, but that the compound can be lost from a moist surface by co-distillation. The rate at which the miticide will be lost depends on the temperature and quantity of water evaporated. The dicyclohexyltin oxide is volatile from the dry state and can co-distill with water.

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Section: Literature Citedmentioning

confidence: 99%

Volatilization and Photodecomposition of Plictran Miticide

Smith¹,

Fischer²,

Axelson³

1976

J. Agric. Food Chem.

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“…DDT-induced mite outbreaks were among the earliest documented examples of this phenomenon. TSM has since been found to exhibit similar avoidance responses to organo-tin, chlorinated-hydrocarbon, foramidine, carbamate, and organophosphorous pesticides (Allison et al, 1968;Gemrich et al, 1976;Gerson & Aronowitz, 1981;Penman et al, 1981Franklin & Knowles, 1984Fisher & Wrensch, 1986). This behavior leads to dispersal from DDT-treated to untreated or lightly treated sur-faces (Davis, 1952;Pielou, 1960) and may result in a higher reproductive potential than those in crowded colonies (Attiah & Boudreaux, 1964b;Van De Vrie et al, 1972).…”

Section: Introductionmentioning

confidence: 99%

“…This behavior leads to dispersal from DDT-treated to untreated or lightly treated sur-faces (Davis, 1952;Pielou, 1960) and may result in a higher reproductive potential than those in crowded colonies (Attiah & Boudreaux, 1964b;Van De Vrie et al, 1972). TSM has since been found to exhibit similar avoidance responses to organo-tin, chlorinated-hydrocarbon, foramidine, carbamate, and organophosphorous pesticides (Allison et al, 1968;Gemrich et al, 1976;Gerson & Aronowitz, 1981;Penman et al, 1981Franklin & Knowles, 1984Fisher & Wrensch, 1986).…”

Section: Introductionmentioning

confidence: 99%

Fenvalerate‐induced aerial dispersal by the twospotted spider mite

Margolies

Kennedy

1988

Entomologia Exp Applicata

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In response to residue of a sublethal dose of the synthetic pyrethroid fenvalerate, twospotted spider mites, Tetranychus urticae Koch, exhibited an aerial dispersal behavior in addition to a previously documented walkoff response. The magnitudes of the two responses were positively correlated, although the peak incidence of aerial dispersal behavior occurred 1.3 h after the peak of walk-off. Mite response was the same on treated and untreated non-feeding surfaces (31.2 and 36.2~ walk-off, 58.4 and 55.607o aerial, respectively), suggesting that fenvalerate did not induce dispersal by direct irritancy. Response on treated leaf disks (40.607o walk-off, 41.60/o aerial) was similar to that on the non-feeding surfaces, but few mites exhibited dispersal behaviors on untreated leaf disks (7070 walk-off, 0070 aerial). The difference between mite dispersal from treated and untreated leaf disks was attributed to a direct antifeedant effect of fenvalerate, which was thought to hasten desiccation by preventing imbibition. This hypothesis was supported by experiments in which mites on non-feeding surfaces responded more rapidly and in greater numbers when held at 10% relative humidity than at 95070 r.h. regardless of fenvalerate residues on the substrate. The relationship among the different types of fenvalerate-induced mite dispersal behavior is discussed.

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