• Pasture

• Range and non-crop noxious weed management

• Noxious and invasive weed ecology

• Public policy / legislation

• Alfalfa extension education

• Insect and mite pests of vegetables

• Shrubs & Ornamentals

• Management of insects organic crops and households

• Insect Identification

• 4-H Entomology

• Onion Thrips

• Psyllids of tomato and potato

• Flea Beatles

• Diseases of forest and shade trees

• Geospatial occurence of forest diseases and their relationships to environmental factors

• Influences on disease occurrence with emphasis on rusts, cankers, and root dieases

• Pesticide & worker safety education

• IR-4 & minor use pesticide registration

• Pest Management

• Weed management in vegetable, field crops and aquatics

• Dry bean

• Onion

• Potato

• Sugarbeet

• Weed seedling ID

• Herbicide behavior in plants

• Insect and mite pets of:

• Alfalfa

• Barley

• Corn

• Dry Bean

• Millet

• Sorghum

• Sunflower

• Wheat

• Grasshoppers in pasture and range

• Russian Wheat Aphid

• Corn spider mites

• Dryland cropping system

• On-line pesticide guide

• Disease of commercial vegetbale crops

• Dry Bean

• Onion

• Geospatical monitoring of plant diseases

• Disease forecasting (COAGMENT)

• Dry bean white mold and rust

• Bacterial and viral dieases of onion

• Collection of agricultural images

• Disease diagnostic clinic

• Plains Diagnostic Network & Colorado IPM Coordinator

• Turf & Ornamental plant pathology research & Extension

• Co-directior of the Cetner for Crop Biosecurity with H. Schwartz & B. Jacobi

• Weed management in field crops

• Corn

• Millet

• Barley

• Wheat

• Sorghum

• Sunflower

• Bioeconomic modeling of weeds

• Field bindweed and Canada Thistle management

• Jointed Goatgrass

• Herbicide resistant weed management