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Chlorothalonil - 2ee Recommendation for Use of Bravo on Spruce 6/96

New York State Department of Environmental Conservation
Division of Solid & Hazardous Materials
Bureau of Pesticides & Radiation
Pesticide Product Registration Section
50 Wolf Road, Albany, New York 12233-7257

Phone 518-457-7446 FAX 518-485-8990

                                       June 24, 1996

Mr. William G. Smith
Senior Extension Associate
Pesticide Management Education Program
Cornell Cooperative Extension
5123 Comstock Hall
Ithaca, NY 14853-0901

Dear Bill:

Re:  FIFRA 2(ee) Recommendation - Use of Bravo 720 Fungicide (EPA Reg. No.
     50534-188) on Spruce to Control a Pest Weir's Cushion (Needle) Rust Not
     Cited on the Label

     The New York State Department of Environmental Conservation has approved
your request for a FIFRA 2(ee) recommendation for use of Bravo 720 Fungicide
(EPA Reg. No. 50534-188) on spruce to control a pest [Weir's Cushion (needle)
Rust] not cited on the label. Enclosed is a copy of the accepted
recommendation.

     Anyone using Bravo Fungicide under this recommendation must have the
recommendation in their possession at the time of application.

     If you have any questions on this matter, please contact Betty Seeley, of
my staff, at (518) 457-7446.

                                       Sincerely,

                                       Maureen P. Serafini
                                       Supervisor
                                       Pesticide Product Registration Section

cc:  R. Mungari - NYS Dept. of Agriculture and Markets

Proposed FIFRA 2(ee) Recommendation

Researcher and Title:  George W. Hudler, Associate Professor

Pesticide Name and EPA Registration No.:
              chlorothalonil (Bravo 720) 50534-188

Target Crop:
              Spruce (Picea sp.

Target Pest:  Weir's cushion (needle) rust - Chrysomyxa weirii

Proposed Application Rate:
              2 - 3 1/2 pts formulated product per acre.

Nature of 2(ee) variation from product label:

     The current label is for control of two other diseases of spruce -
Sirococcus tip blight and Rhizosphaera needlecast.
     The 2(ee) variation adds a new pest to the label, with recommended rates
similar to those for Sirococcus tip blight.

Complete recommendation as it will appear in Cornell Recommends:
     For control of Weir's cushion (needle) rust, apply chlorothalonil (Bravo
720, mixed 2 -3 1/2 pts/100 gallons, (depending on severity of disease) to
individual trees, beginning when 10% of buds have broken and twice thereafter
at 7-10 day intervals.  Application should not exceed 100 gallons (= 2 - 3 1/2
pts formulated product) per acre.

Supporting data:
     See experimental results of Merrill and Wenner, published in the American
Phytopathological Society Fungicide/Nematicide Tests for 1994.