Fruit & Vegetable Magazine

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Closer registered for potatoes

March 6, 2013  By Press Release

Mar. 6, 2013, Calgary, Alta – Potato growers in Canada now have access to Closer, a new insecticide for the control of aphids.

Aphids transmit viruses and can reduce marketable yield. Aphid control is particularly critical in potato seed production where the tolerance for total virus levels is extremely low.

Canada’s regulatory authorities have approved Closer for the control of several important species of aphids in potato crops.


The active ingredient in Closer is Sulfoxaflor, an insecticidal molecule developed from a new class of insecticides called sulfoximines.

Effective at low use rates, Closer is fast acting and provides extended residual control. Closer provides systemic and translaminar activity. The molecule is effective on insect populations resistant to other insecticide classes such as neonicotinoids, organophosphates and pyrethroids and can be a rotational partner with other chemistries.

“Seed potato growers have to be absolutely diligent about controlling aphid populations,” says Jerry Olechowski, marketing manager with Dow AgroSciences. “This novel mode of action provides super-fast knockdown of insect pests. Closer exhibits complex and unique interactions with important receptors in the insect’s central nervous system different from those observed with neonicotinoids. It exhibits no cross-resistance in insects that are resistant to neonicotinoids, a tremendous advantage for managing resistant populations.”

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