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- Professor of Horticultural Physiology
- Emeritus Distinguished Professor of Agronomy
Areas of Expertise
- Soil Fertility
- Soil Testing
- Nutrient Management
- Manure Management
- Professor of Plant Stress Biology
Areas of Expertise
- Root phenomics
- Anatomical traits affecting water and nutrient acquisition
- Genome-wide association studies
- Root hairs
- Professor Emeritus of Plant Breeding and J. Franklin Styer Professor Emeritus of Horticultural Botany
- Professor of Horticulture
- Extension Specialist, Tree Fruit Production
Areas of Expertise
- Deciduous Tree Fruit Production
- Tree Fruit Rootstocks
- Pruning and Training Tree Fruit
- Apple Varieties
- Tree fruit nutrition
- Asian pear varieties
- Impact of climate change on tree fruit production
- Emeritus Professor of Weed Science and Extension Weed Specialist
Areas of Expertise
- Managing weedy plants in agroecosystems
- Conservation tillage and cover crops
- Herbicide use
- Integrated weed management
- Weed management in organic cropping systems
- Professor Emeritus of Forage Management
Areas of Expertise
- Forage Crop Establishment, Management and Utilization
- Perennial Warm-Season Grass Establishment and Management
- Professor Emeritus of Horticultural Physiology
- Professor of Floriculture
- Retired Professor of Horticultural Ecology
- Emeritus Professor of Vegetable Crops
- Professor of Horticulture
Areas of Expertise
- Tree and Small Fruit Physiology
- Fruit production systems
- Data Analysis
- Professor of Weed and Applied Plant Ecology
- Professor Emeritus of Vegetable Crops
- Professor Emeritus of Plant Breeding
- Emeritus Professor of Agronomy
Areas of Expertise
- Grain crop management
- Corn management and hybrid evaluation
- Corn silage management
- Soybean management and variety evaluation
- Winter wheat management and variety evaluation
- Winter barley management and variety evaluation
- Interseeding cover crops in corn and soybeans
- Professor Emeritus of Plant Physiology
- Adjunct Associate Professor of Agronomy, USDA-ARS
- Professor Emeritus of Turfgrass Management
- Associate Professor of Floriculture
