Extension Personnel
Purdue Extension: Knowledge to Go
1-888-EXT-INFO or 1-888-398-4636
Extension Personnel
![Janna Beckerman](../_media/headshots/beckermanjanna.jpg)
Dr. Janna Beckerman
Ornamental and Fruit Diseases - Extension and research activities related to disease management of landscape ornamentals; nursery and greenhouse crops, and fruit crops
![John Bonkowski](../_media/headshots/bonkowskijohn.jpg)
John Bonkowski D.P.M.
Plant & Pest Diagnostic Lab - Plant disease diagnosis and management recommendations
![Tom Creswell](../_media/headshots/creswelltom.jpg)
Dr. Tom Creswell
Plant & Pest Diagnostic Lab - Plant disease diagnosis and management recommendations
![Daniel Egel](../_media/headshots/egeldan.jpg)
Dr. Daniel S. Egel
Vegetable Diseases - Statewide vegetable extension; foliar diseases of cucurbits including MELCAST: soilborne diseases of watermelon
![Bill Johnson](../_media/headshots/johnsonbill.jpg)
Dr. Bill Johnson
Weed Science - Biology and management of herbicide resistant weeds, weed management in no-till systems, winter annual weed management and interactions with SCN, weed management and N accumulation by weeds in glyphosate-resistant corn
![Gerald (Lee) Miller](../_media/headshots/millerlee.jpg)
Dr. Gerald (Lee) Miller
![Darcy Telenko](../_media/headshots/telenkodarcy.jpg)
Dr. Darcy Telenko
Field Crop Pathology - Management of soilborne and foliar pathogens of agronomic crops
![Fred Whitford](../_media/headshots/whitfordfred.jpg)
Dr. Fred Whitford
Purdue Pesticide Programs - Extension outreach; pesticide safety education; pesticide registration; regulations; insurance; environmental and safety audits, Indiana Extension history
![Marcelo Zimmer](../_media/headshots/zimmermarcelo.jpg)