Effect of pesticide applications on abundance of European red mite (Acari: Tetranychidae) and tryphlodormus pyri (Acari: Phytoseiidae) in Nova Scotian apple orchards

Pesticide use and mite counts were recorded in 38 apple orchards in 1985 and 46 orchards in 1986. Pesticides were scored on a scale from 1 (harmless) to 4 (harmful) according to their toxicity to the phytoseiid mite Typhlodromus pyri Scheuten. Counts of European red mite, Panonychus ulmi (Koch), wer...

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Veröffentlicht in:	Journal of economic entomology 1991, Vol.84 (2), p.570-580
Hauptverfasser:	Hardman, J.M, Rogers, R.E.L, Nyrop, J.P, Frisch, T
Format:	Artikel
Sprache:	eng
Schlagworte:	incidence insecticidal properties Malus domestica natural enemies orchards Panonychus ulmi pesticides predators predators of insect pests toxicity Typhlodromus pyri
Online-Zugang:	Volltext
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