IR-4 Professional Directory

For additions or updates to the database, please contact Nick Drost

John O'Sullivan
University of Guelph
HES Simcoe
P.O. Box 587, Blue Line Rd. & Hwy #3
Simcoe, ON, N3Y 4N5 , Canada
Phone: 519-426-7120
Fax: 519-426-1225

Hipolito Ofarrill
University of Puerto Rico
Dept of Plant Protection
P.O. Box 9030
Mayaguez, PR, 00681-9030
Phone: 787-767-9705 ext 2031

Dave Olson
630 Freedom Business Center
Suite 402
King of Prussia, PA, 19406
Phone: 610-491-2814
Fax: 610-491-2810

Roy Olson
Drexel Chemical Co.
P.O. Box 13327
Memphis, TN, 38113

Clark Oman
Compass Agri-Tech
428 Indiangrass
Montrose, CO, 81403
Phone: 970-901-2171 Website:

Don Oshaughnessy
Terra International Inc
P.O. Box 6000
Sioux City, IA, 51102-6000
Phone: 712-277-1340
Fax: 712-233-3648

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