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Chemical Control of Red Spider Mite on Glasshouse Roses
Author(s) -
French N.,
Ludlam F. A. B.
Publication year - 1972
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1972.tb01735.x
Subject(s) - dicofol , spider mite , methomyl , acaricide , biology , aldicarb , mite , toxicology , horticulture , botany , pesticide , agronomy
SUMMARY On a commercial nursery in east Kent where red spider mite (Tetrany‐ chus urticae (Koch)) showed resistance to demeton‐S‐methyl, dicofol and quinomethionate, alternative control chemicals were investigated during 1968 and 1969. Chlorphenamidine, dinobuton, formetanate, methomyl, “Pentac” and chlorphenamidine plus formetanate all gave good control of the mite. Tetradifon gave good control in 1968 but not in 1969. Aldicarb proved ineffective in the one experiment in 1968, but good and persistent control was obtained in two of the three experiments in 1969. Binapacryl, fenazaflor, GS19851 and “Torak” did not significantly decrease mite numbers. On a nursery in west Sussex, dinobuton, endosulfan, formetanate and quinomethionate applied in February 1971 to unpruned rose bushes, heavily infested with red spider mite, all gave good control of mites and eggs.