The information and recommendations in this newsletter are applicable to North Carolina and may not apply in other areas.
The information and recommendations in this newsletter are applicable to North Carolina and may not apply in other areas.
From: Gerald J Holmes, Extension Plant Pathologist
QUADRIS Flowable Fungicide (active ingredient azoxystrobin), manufactured by Zeneca Ag Products, is now labeled on many new vegetable crops. The new label is attached to this message as an Adobe Acrobat .pdf file and also can be obtained at www.zenecaagproducts.com. Please refer to the label for complete details.
Onions (bulb and green) and leeks: Quadris can now be used to control purple blotch, rust, and downy mildew (but not Botrytis) at 6.2-12.3 fl. oz./acre; maximum of six applications.
Leafy vegetables, including cilantro, endive, head and leaf lettuce, parsley, spinach: Quadris can now be used to control a variety of leaf spots, white rust, and powdery mildew, plus downy mildew on lettuce (but not downy mildew on spinach) at 6.2-15.4 fl. oz./acre; maximum of six applications. To prevent phytotoxicity when spraying lettuce and spinach, do not mix Quadris with other pesticides.
Root and tuber vegetables, including red beet, carrot, parsnip, radish, rutabaga, and turnip: Quadris can now be used to control Alternaria and Cercospora leaf spots (blights on carrot) and powdery mildew (but not white rust on turnip) at 6.2-15.4 fl. oz./acre; maximum of six applications.
Because of the danger of fungicide resistance developing, there are additional restrictions on using Quadris. For all crops listed above, do not make more than two sequential applications of Quadris before making one application of another fungicide labeled on that crop. For some of these crops, there may be only one other fungicide registered (see the Agricultural Chemicals manual for specifics). If there are no other fungicides registered, then only two applications of Quadris should be made. For downy and powdery mildew, do not make more than one application before using another fungicide.
Employment and program opportunities are offered to all people regardless of race, color, national origin, sex, age or disability. North Carolina State University, North Carolina A&T State University, U.S. Department of Agriculture, and local governments cooperating.
Last modified on December 1, 2000 by Stephen J. Toth, Jr.