Research and Extension Responsibilities:

Tony Vyn in Long-term Tillage Plots at Purdue's Agronomy Farm (August 2002)	Tony Vyn in Potassium Management Plots at Purdue's Davis Research Farm (August 2002)

Research:

Summary of research:

• Cropping system modification (tillage, crop rotation, nutrient management, etc.) to improve profitability, soil stewardship, and long-term sustainability of corn and soybean.
• Genetic mechanisms underlying the response of corn (hybrids and inbreds) to increased plant density (graduate student M. Gonzalo)
• Corn physiology studies on plant-to-plant variability in corn resulting from management practices: Influence of plant density and nitrogen rate on growth and developmental uniformity in corn (graduate student C. Boomsma)
• Conservation tillage effects on plant-to-plant variability in corn (graduate students J. Brewer and C. Boomsma)
• Phosphorus and potassium placement methods in conservation tillage systems for corn in high yield environments (graduate student M. Canepa).
• Soybean row width and plant population impacts on remote sensing (graduate student J. Alsdorf)
• Conservation tillage and crop rotation effects on C + N sequestration/emissions, crop response, and soybean cyst nematode incidence (the latter with Dr. A. Westphal, BPP)
• Precision steering (RTK) implications for corn management (e.g. strip tillage and N  band placement relative to corn rows)
• Prairie grass establishment and management effects on soil C and N dynamics relative to corn-soybean rotation systems.

Extension:

• Extension Coordinator for Agronomy Department, Purdue University (2003-2005)
• Provide technical information on cropping systems to farmers, county educators and industry agronomists
• Develop continuing education materials on conservation-tillage planting systems
• Interact with state extension specialists
• Chair of Cropping Systems Common Interest Group at Purdue University

Background Information:

EDUCATION
B.Sc. (Agr.) - University of Guelph (1976)
M.Sc. - University of Guelph (1978)
Ph.D. - University of Guelph (1987)

Date joined Purdue's staff:  August 1998
Effort distribution:  60% research, 40% extension

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