Experts list
ANR nitrogen management
Doug Parker, Ph.D.
Director, California Institute for Water Resources
UC Agriculture and Natural Resources
doug.parker@ucop.edu
(510) 987-0036
Irrigation
Stuart Pettygrove, Ph.D.
UC Cooperative Extension specialist
Land, Air and Water Resources, UC Davis
Soil fertility, land application of wastes and wastewater, dairy manure, winegrape nutrition, precision agriculture
(530) 752-2533
gspettygrove@ucdavis.edu
Lawrence J. Schwankl, Ph.D.
UC Cooperative Extension specialist
Kearney Agricultural Research and Extension Center
Irrigation engineering, design, operation and management of irrigation systems, soil moisture monitoring, low-volume irrigation
(559) 646-6569
schwankl@uckac.edu
Groundwater management
Thomas Harter, Ph.D.
UC Cooperative Extension specialist
Land, Air and Water Resources, UC Davis
thharter@ucdavis.edu
(530) 752-2709
Dairy production
Alejandro R. Castillo, Ph.D.
(Speaks Spanish)
UC Cooperative Extension advisor
Merced County, ruminants nutrition
(209) 385-7403
arcastillo@ucdavis.edu
Carol A. Collar
UC Cooperative Extension advisor
Kings County, dairy, livestock, forage
(559) 582-3211, Ext. 2739
ccollar@ucdavis.edu
Jennifer Heguy
UC Cooperative Extension advisor
San Joaquin and Stanislaus counties, dairy
(209) 525-6800
jmheguy@ucdavis.edu
Gerald E. Higginbotham, Ph.D.
UC Cooperative Extension advisor
Fresno and Madera counties, dairy nutrition and management, silage management
(559) 675-7879, Ext. 209
gehigginbotham@ucdavis.edu
Betsy M. Karle
UC Cooperative Extension program representative
Glenn County, dairy
(530) 865-1156
bmkarle@ucdavis.edu
Nyles G. Peterson
UC Cooperative Extension advisor
San Bernardino County, dairy management, waste management, milk quality and milking management
(909) 387-3318
ngpeterson@ucdavis.edu
Noelia Silva-del-Rio
(Speaks Spanish)
UC Cooperative Extension advisor
Tulare County, dairy science
(559) 684-3313
nsilvadelrio@ucdavis.edu
Nutrient management
Aziz Baameur
UC Cooperative Extension advisor
Santa Clara County, small farms, cultivar evaluation, nutrient management, irrigation, specialty crops, cucurbits, oriental vegetables
(408) 282-3127
azbaameur@ucdavis.edu
Mark Bolda
UC Cooperative Extension advisor
Santa Cruz County, strawberries and caneberries
(831) 763-8025
mpbolda@ucdavis.edu
Michael D. Cahn
UC Cooperative Extension advisor
Monterey County, irrigation and water resources
(831) 759-7377
mdcahn@ucdavis.edu
Louise E. Jackson, Ph.D.
UC Cooperative Extension specialist
Land, Air and Water Resources, UC Davis
Plant and soil nitrogen dynamics, organic and conventional vegetable production, grassland restoration ecology
(530) 754-9116
lejackson@ucdavis.edu
Richard Smith
UC Cooperative Extension advisor
Monterey County, vegetable crop production and weed science
(831) 759-7357
rifsmith@ucdavis.edu
Farming practices
Marsha L. Campbell Mathews
UC Cooperative Extension advisor
Stanislaus County, field crops
(209) 525-6800
mcmathews@ucdavis.edu
David Michael Crohn, Ph. D.
Environmental Science, UC Riverside
Extension biological systems engineer, biological systems for municipal waste management, nonpoint source pollution, design of land application systems, water resource management, surface water quality
(310) 903-3733
crohn@ucr.edu
Carol A. Frate
UC Cooperative Extension advisor
Tulare County, alfalfa, dry beans, sugarbeets, corn, plant pathology
(559) 684-3314
cafrate@ucdavis.edu
Timothy K. Hartz, Ph. D.
UC Cooperative Extension specialist in the Department of Plant Sciences, UC Davis
Improved management regimes for commercial vegetable production, cultural practices for warm-season vegetable crops
(530) 752-1738
tkhartz@ucdavis.edu
Deanne Meyer, Ph. D.
UC Cooperative Extension specialist in the Department of Animal Science, UC Davis
Livestock waste management
(530) 752-9391
dmeyer@ucdavis.edu
Jeffrey P. Mitchell, Ph.D.
UC Cooperative Extension specialist in the Department of Plant Sciences, UC Davis
Cropping systems
UC Kearney Agricultural Research and Extension Center
(559) 646-6565
mitchell@uckac.edu
Thomas P. Tomich, Ph.D.
Director of UC ANR statewide Sustainable Agriculture Research and Education Program, director of the Agricultural Sustainability Institute, WK Kellogg Endowed Chair in Sustainable Food Systems at UC Davis. Policy implications
(530) 752-3915
tptomich@ucdavis.edu