Basil downy mildew has been confirmed on field-grown basil in southern and central New Jersey on 6/29/16. This is the first report of the pathogen in New Jersey and the mid-Atlantic region this growing season. All basil growers are encouraged to scout on a regular basis and initiate a protectant fungicide program if one hasn’t been started.
Special local needs labels (24c) have been granted for the use of Subdue Maxx (mefenoxam, 4) and Heritage (azoxystrobin, 11) for downy mildew (Peronospora belbahrii) on basil transplants grown for resale to consumers in New Jersey. Micora (mandipropamid, 40) also has a supplemental label for the control of basil downy mildew in the greenhouse. In order to use these fungicide, growers must have in their possession the 24c labels. Please see label for specific rates, REI’s, and PHI’s. Please here click on Subdue Maxx, Heritage, or Micora for links to the 24c label.
For the past 6 years, Rutgers has led efforts in the breeding of sweet basil for resistance to downy mildew. Currently, basil downy mildew threatens 100% of the basil acreage in the US and other parts of the world.
Rutgers University, along with researchers at Michigan State, University of Florida, Oregon State University, Cornell University, California State University, and North Carolina State University as well as the USDA Agricultural Research Service have been awarded a $2.3-million USDA grant to help fight downy mildew in a number of highly valuable crops. The announcement from MSU who leads this effort can be found on MSU Today.
Basil downy mildew (Peronospora belbahrii) has been found in a field near Vineland, New Jersey. This is the first report of downy mildew in field-grown basil in New Jersey this year. All basil growers need to scout on a daily basis and initiate a preventative fungicide program.
Basil downy mildew has been reported for the first time this season near Millville, NJ in potted Thai and Cinnamon basil plants being sold at big box stores, as well as in sweet basil located in grower field. All basil growers in New Jersey should scout their fields on a daily basis. [Read more…]