Dow AgroSciences (Dow) has received registrations from the U.S. Environmental Protection Agency (EPA) and the California Department of Pesticide Regulation for Quintec fungicide use on tomato.
Quintec controls powdery mildew.
Numerous field trials conducted by university, independent researchers, and Dow confirm a high level of efficacy of Quintec on powdery mildew in tomatoes. Dow says Quintec was the top treatment in university trials in 2013 and 2014.
According to a Dow news release, Quintec has been an important part of powdery mildew management programs in many specialty crops, including lettuce, strawberries, and peppers.
Inside the plant, Quintec redistributes across expanding leaf and fruit tissues, forming a protective barrier as it moves. Thorough spray coverage is essential, yet the redistribution can protect parts of the leaves and fruit which may not have receive direct spray.
The company says Quintec binds to cuticular waxes. Redistribution occurs primarily through local vapor movement as a slow release of quinoxyfen vapor is re-adsorbed on adjacent tissue. This 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).
Dow says this mode of action is unique to Quintec, making it a good rotational product with other classes of chemistry.
Quintec was initially registered for other crops in 1999 under the EPA’s Reduced Risk Pesticide Program.
For tomato, the re-entry interval is 12 hours. The pre-harvest interval is three days.
Required personal protective equipment is minimal.