Active Ingredient in Dow's Dithane Achieves Re-registration Status

Mancozeb no longer used for turf, foliar applications to cotton, pineapple propagation, athletic fields and use on pachysandra. Compiled by staff

Published on: Jan 6, 2006

Mancozeb, the active ingredient in Dow AgroSciences' Dithane fungicides, successfully completed the U.S. Environmental Protection Agency re-registration process required for all crop protection chemicals sold in the United States, according to a company statement.  

Under U.S. law, all pesticides registered prior to 1984 must undergo re-registration, an evolving health and safety review process in which regulators seek new scientific data to address existing and hypothetical concerns.

The EPA is requiring some label changes based on their review. Dow AgroSciences and other mancozeb registrants voluntarily withdrew five uses – residential turf, foliar applications to cotton, pineapple propagation, athletic fields and use on pachysandra.

"No significant negative impacts are anticipated in the user community, as alternatives exist to control disease problems," says Fabian Gil, Dow AgroSciences' global business leader for Dithane fungicides. "We determined that these uses were seldom employed, and the costs to generate required data could not be economically justified."

Dow AgroSciences says it remains committed to all of the other uses on the label, including golf courses, ornamentals and numerous agricultural crops, and anticipates adding new uses in the near future as part of a separate registration effort.

Dithane fungicide is a member of a family of fungicides known as ethylene bisdithiocarbamates. Worldwide, EBDCs are applied to an estimated 100 million acres of crops worth between $90 billion and $100 billion. Dithane accounts for approximately 60% of EBDC sales, and is approved for use against more than 400 diseases on 70 crops.