Dow Received A New Crop Label For Their Fungicide – Quintec

Taylor HillmanGeneral

Dow AgroSciences received U.S. EPA and California Department of Pesticide Regulation approval for Quintec® fungicide on tomatoes. Quintec provides control of powdery mildew.

Numerous field trials – conducted by the university, independent researchers and by Dow AgroSciences – confirm the high level of efficacy of Quintec on powdery mildew in tomatoes. Quintec was the top treatment in university trials in 2013 and 2014. “For more than a decade, Quintec has been an important part of powdery mildew management programs in many specialty crops, including lettuce, strawberries and peppers,” says Jim Mueller, Dow AgroSciences field scientist. “Tomato growers will now benefit from that same level of performance.”

Once on plants, Quintec has the unique ability to redistribute across expanding leaf and fruit tissues, forming a protective barrier as it moves. Thorough spray coverage is essential, but the redistribution can protect parts of the leaves and fruit that may not have received direct spray. “Upon application, Quintec binds to cuticular waxes,” says Mueller. “Redistribution occurs primarily through local vapor movement, where a slow release of quinoxyfen vapor is re-adsorbed on adjacent tissue. The process is often called ‘surface mobile’.”

Quintec contains the active ingredient quinoxyfen and is the only member of the quinoline class of chemistry (FRAC Group 13). “The mode of action is unique to Quintec, making it an excellent rotational product with other classes of chemistry,” says Mueller.

Quintec was initially registered for other crops in 1999 under the EPA’s Reduced Risk Pesticide Program. The re-entry interval for tomatoes is 12 hours. The pre-harvest interval is 3 days for tomatoes. Required personal protective equipment (PPE) is minimal.
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