Abstract

Comparative toxicity of five acaricides to tomato russet mite (TRM), Aculops lycopersici (Massee), and to the predatory tydeid mite Homeopronematus anconai (Baker) was evaluated. Avermectin B1 was the most toxic material to TRM, followed in decreasing order by dicofol, cyhexatin, sulfur, and thuringiensin. Dicofol was the most toxic to H. anconai, followed in decreasing order by avermectin B1 sulfur; cyhexatin, and thuringiensin. Selective doses of avermectin B1 demonstrated good potential for control of TRM without reducing H. anconai numbers. Control of TRM with the other four acaricides most likely would reduce H. anconai population levels.

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