Microarthropods Associated with Insecticide-Treated and Untreated Artichoke Fields in California

Autor:	W. H. Lange, K. S. Goh
Rok vydání:	1989
Předmět:	Ecology biology Thrips Cynara scolymus General Medicine Methidathion biology.organism_classification chemistry.chemical_compound Horticulture Platyptilia carduidactyla chemistry Insect Science Botany Parathion methyl Pergamasus Tetranychus urticae PEST analysis
Zdroj:	Journal of Economic Entomology. 82:621-625
ISSN:	1938-291X 0022-0493
DOI:	10.1093/jee/82.2.621
Popis:	Samples of microarthropods from artichoke leaves, flower heads, and soil debris were taken from fields where growing conditions were similar except for insecticide treatment; fields were treated in Castroville and untreated in Carmel Valley, Calif. Methyl parathion and methidathion were applied every 2 wk for the control of the artichoke plume moth, Platyptilia carduidactyla (Riley), the major pest of artichoke. Pesticide-treated fields had eight fewer predatory and phytophagous microarthropod species. Anystis sp. Was absent; numbers of Parasitus bituberosus Karg and Pergamasus quisquiliarum Canestrini were reduced in treated fields. These mites are important predators of artichoke pests including first-and second-instar artichoke plume moth, thrips, aphids, and mites. A secondary outbreak of Tetranychus urticae Koch was observed in methyl parathion-treated fields. These factors should be considered in an IPM program for artichoke.
Databáze:	OpenAIRE
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