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Emamectin Benzoate: Control of the Heliothine Complex and Impact on Beneficial Arthropods

D. M. Dunbar, D. S. Lawson, S. M. White and N. Ngo


Emamectin benzoate (MK-0244) is a semi-synthetic derivative of the natural product abamectin which is in the avermectin family of 16-membered macrocylic lactones. It has unprecedented potency against a broad spectrum of lepidopterous pests with LC90 values ranging between 0.001-0.02 ug/ml in ingestion-based foliar spray assays. Emamectin benzoate is more potent against tobacco budworm, Heliothis virescens (F.) than other new insecticides, such as fipronil, chlorfenapyr and tebufenozide. In the field, emamectin benzoate is very effective at controlling tobacco budworm and cotton bollworm, Helicoverpa zea (Boddie) at low use rates (0.0075-0.015 lb ai/a). The mode of action is similar to abamectin (i.e., GABA- and glutamate-gated chloride channel agonist) and is not cross resistant with any other compound currently used commercially. The first registrations for emamectin benzoate in the United States are anticipated in 1998 as Proclaim TM on vegetable crops. Registration on cotton as Strategy TM is expected in 2000 or 2001. An overview of the efficacy of emamectin benzoate against the Heliothine complex and the impact on beneficial arthropods is provided.

Reprinted from Proceedings of the 1998 Beltwide Cotton Conferences pp. 1116 - 1119
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998