The Effect of Sprays on the Fauna of Apple Trees. IV. The Recolonization of Orchard Plots by the Predatory Mirid Blepharidopterus angulatus and Its Effect on Populations of Panonychus ulmi

1966 ◽  
Vol 3 (2) ◽  
pp. 269 ◽  
Author(s):  
R. C. Muir
Keyword(s):  
Panonychus Ulmi ◽  
Apple Trees ◽  
Predatory Mirid

THE EGGS AND OVIPOSITION SITES OF DIAPHNIDIA CAPITATA (HEMIPTERA: MIRIDAE) ON APPLE TREES

1970 ◽  
Vol 102 (10) ◽  
pp. 1316-1319 ◽  
Author(s):  
R. L. Horsburgh ◽  
Dean Asquith
Keyword(s):  
Tetranychus Urticae ◽  
Spider Mites ◽  
Panonychus Ulmi ◽  
Apple Trees ◽  
Oviposition Sites

AbstractNymphal and adult Diaphnidia capitata (Van Duzee) have long been recognized as predators of Panonychus ulmi (Koch) and Tetranychus urticae Koch. The eggs and oviposition sites preferred by this species are described herein to supplement available descriptions of the eggs of mirid predators of spider mites.

DISTRIBUTION OF PHYTOPHAGOUS AND PREDACIOUS MITES ON APPLE TREES IN NOVA SCOTIA

1973 ◽  
Vol 105 (2) ◽  
pp. 271-276 ◽  
Author(s):  
H. J. Herbert ◽  
K. P. Butler
Keyword(s):  
Nova Scotia ◽  
Panonychus Ulmi ◽  
Predacious Mites ◽  
Apple Trees ◽  
Predacious Mite ◽  
Phytophagous Mites ◽  
Lower Position ◽  
Zetzellia Mali ◽  
Aculus Schlechtendali ◽  
Mature Apple

AbstractThe relative densities of phytophagous and predacious mites within mature apple trees were examined. The eggs of phytophagous mites Aculus schlechtendali (Nal.) and Panonychus ulmi (Koch) were more numerous in the lower position of the tree while the reverse was true for the predacious mite Zetzellia mali (Ewing) and its eggs.

THE EGG AND OVIPOSITION SITE OF DERAEOCORIS NEBULOSUS (HEMIPTERA: MIRIDAE) ON APPLE TREES

1980 ◽  
Vol 112 (5) ◽  
pp. 527-528 ◽  
Author(s):  
J. P. McCaffrey ◽  
R. L. Horsburgh
Keyword(s):  
Panonychus Ulmi ◽  
Oviposition Site ◽  
Pest Species ◽  
Apple Orchards ◽  
Apple Trees ◽  
European Red Mite ◽  
Important Pest ◽  
Ornamental Trees ◽  
Trees And Shrubs ◽  
Oviposition Sites

The predaceous mirid Deraeocoris nebulosus (Uhler) is found on more than 50 species of ornamental trees and shrubs where it feeds on several important pest species (Wheeler et al. 1975). It is a common mite and aphid predator in commercial apple orchards in Virginia (Parrella et al. 1978). Wheeler et al. (1975) described the nymphal stages and biology, but made no mention of the egg or oviposition site. We describe the egg and oviposition site which we discovered while studying various predators of the European red mite, Panonychus ulmi (Koch), in Virginia apple orchards. Eggs and oviposition sites of other predaceous mirids associated with apple have been described (Kullenberg 1942; Collyer 1952, 1953; Sanford 1964; Horsburgh and Asquith 1968, 1970).

The effect of temperature on development and hatching of the egg of Blepharidopterus angulatus (Fall.) (Heteroptera, Miridae)

1966 ◽  
Vol 57 (1) ◽  
pp. 61-67 ◽  
Author(s):  
R. C. Muir
Keyword(s):  
Linear Relationship ◽  
Panonychus Ulmi ◽  
Effect Of Temperature ◽  
Daily Maximum ◽  
Predatory Mirid ◽  
Threshold Of Development

Observations on the eggs of the predatory Mirid Blepharidopterus angulatus (Fall.), which plays a part in the control of Panonychus ulmi (Koch) on apple, were carried out in 1963–64. The eggs required chilling at 4.4 or 7.2°C. (40 or 45°F.) for 14–16 weeks to terminate diapause. The reciprocal of the time in days for the first eggs to hatch showed a linear relationship with temperature. The temperature at the threshold of development was found by calculation to be 4.7°C.; 409 day-degress C. were required for the first larvae to hatch and 727 for 50 per cent. of them to hatch. From this information and the daily maximum and minimum temperatures, the expected dates of first hatch at East Malling were calculated for the years 1958–64 and found to agree well with the dates on which the first larvae were observed in the field.

scholarly journals Soybean Oil as a Summer Spray for Apple: European Red Mite Control, Net CO2 Assimilation, and Phytotoxicity

HortScience ◽  
2003 ◽  
Vol 38 (2) ◽  
pp. 234-238 ◽  
Author(s):  
Renae E. Moran ◽  
Dennis E. Deyton ◽  
Carl E. Sams ◽  
Charles D. Pless ◽  
John C. Cummins
Keyword(s):  
Soybean Oil ◽  
Co2 Assimilation ◽  
Panonychus Ulmi ◽  
Apple Trees ◽  
Malus Sylvestris ◽  
European Red Mite ◽  
Net Co2 Assimilation ◽  
Mite Control ◽  
Leaf Residue ◽  
Control Net

Soybean [Glycine max (L.) Merrill] oil was applied to apple trees [Malus sylvestris (L.) Mill var. domestica (Borkh.) Mansf.] as a summer spray in six studies to determine if it controls European red mites [Panonychus ulmi (Koch.)], how it affects net CO2 assimilation (A), and if it causes phytotoxicity. Sprays of 0.5%, 1.0%, and 1.5% soybean oil {TNsoy1 formulation [soybean oil premixed with Latron B-1956 (LAT) spreader-sticker at 10 oil: 1 LAT (v/v)]} reduced mite populations by 94%. Sprays of 1% and 2% soybean oil reduced mite populations to three and four mites per leaf, respectively, compared to 25 per leaf on water-sprayed plants. Soybean oil concentrations of 1.0% and 1.5% applied to whole trees reduced A for less than 7 days. Phytotoxicity did not occur when soybean oil was applied with an airblast sprayer at concentrations of 1.0% and 1.5% or with a mist bottle at 2%. Phytotoxicity occurred when soybean oil was applied with a mist bottle at 4% and 6%, which left soybean oil leaf residues of 0.22 to 0.50 mg·cm-2. No phytotoxicity occurred with 4% SunSpray, which resulted in a mean leaf residue of only 0.13 mg·cm-2. Spraying 1% soybean oil tended to give better mite control than 1% SunSpray Ultra-Fine oil, but caused greater oil residues and a greater reduction in A.

THE CONTROL OF WINTER EGGS OF PANONYCHUS ULMI (ACARINA: TETRANYCHIDAE) AND BRYOBIA RUBRIOCULUS (ACARINA: TETRANYCHIDAE) BY M2060 (2-FLUOROETHYL (4-BIPHENYLYL) ACETATE) AND OTHER PRODUCTS IN LEBANON

1971 ◽  
Vol 103 (1) ◽  
pp. 130-136
Author(s):  
Sami Musa ◽  
Gudo Dosse
Keyword(s):  
Tree Growth ◽  
The Other ◽  
Panonychus Ulmi ◽  
Apple Trees ◽  
Egg Hatch ◽  
Highly Effective

AbstractPanonychus ulmi (Koch) and Bryobia rubrioculus (Scheuten) are very serious pests on apple trees in Lebanon. The effectiveness of M2060 (2 fluoroethyl (4-biphenylyl) acetate), Ovamort, Diotol, Genite, and Citronol plus parathion was investigated on the winter eggs of these two mites in the laboratory and in the field. M2060-oil was highly effective and superior to all products at early and late dormant stages of tree growth. The nearer to egg hatch the other products were applied, the more effective they were.

THE EFFECT OF EUROPEAN RED MITE, PANONYCHUS ULMI (ACARINA: TETRANYCHIDAE), INFESTATIONS ON N, P, AND K CONCENTRATIONS IN APPLE FOLIAGE THROUGHOUT THE SEASON

1973 ◽  
Vol 105 (2) ◽  
pp. 263-269 ◽  
Author(s):  
H. J. Herbert ◽  
K. P. Butler
Keyword(s):  
Chemical Treatment ◽  
Panonychus Ulmi ◽  
Apple Trees ◽  
Seasonal Trends ◽  
European Red Mite ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

AbstractSeasonal trends of the percentage of nitrogen, phosphorus, and potassium were measured in the foliage of apple trees infested with the European red mite, Panonychus ulmi (Koch), at four population levels created by the action of predators and/or chemical treatment.It was shown that by early September the concentrations of these nutrients; particularly nitrogen, were significantly depressed by high P. ulmi populations.

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