Extension Personnel

Purdue Extension: Knowledge to Go
1-888-EXT-INFO or 1-888-398-4636

Extension Personnel

John Bonkowski

John Bonkowski D.P.M.

Plant and Pest Diagnostic Lab
Plant Disease Diagnostician
765.494.4641
765.494.3958 (fax)

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Plant & Pest Diagnostic Lab - Plant disease diagnosis and management recommendations

Tom Creswell

Dr. Tom Creswell

Plant and Pest Diagnostic Lab
Clinical Engagement Professor and Director, Plant and Pest Diagnostic Lab
765.494.8081
765.494.3958 (fax)

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Plant & Pest Diagnostic Lab - Plant disease diagnosis and management recommendations

César Escalante

Dr. César Escalante

Southwest Purdue Agriculture Program
Clinical Assistant Professor and Extension Plant Pathologist
812.886.0198
812.886.6693 (fax)

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Vegetable Diseases - Statewide vegetable extension; foliar diseases of cucurbits including MELCAST: soilborne diseases of watermelon

Bill Johnson

Dr. Bill Johnson

Professor of Weed Science
765.494.4656
765.494.0363 (fax)

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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

Dr. Gerald (Lee) Miller

Associate Professor of Plant Pathology
765.494.1443
765.494.0363 (fax)

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Turfgrass Pathology

Darcy Telenko

Dr. Darcy Telenko

Associate Professor of Plant Pathology
765.496.5168
765.494.0363 (fax)

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Field Crop Pathology - Management of soilborne and foliar pathogens of agronomic crops

Fred Whitford

Dr. Fred Whitford

Purdue Pesticide Programs
Clinical Engagement Professor and Director, Purdue Pesticide Programs
765.494.1284
765.496.1556 (fax)

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Purdue Pesticide Programs - Extension outreach; pesticide safety education; pesticide registration; regulations; insurance; environmental and safety audits, Indiana Extension history ‬