Program Team/Workgroup Directory/Information

Return to Program Team/Workgroup Directory/Information

Workgroup Information Walnut
Summary	Addresses high priority issues including improvement (breeding), integrated pest management (insect, disease, and alternatives to methyl bromide for fumigation for nematodes, etc.), irrigation and efficient orchard management within the walnut industry of California.
Website:	http://fruitsandnuts.ucdavis.edu/crops/walnut.shtml

Workgroup Chair Information

Name	Emily Symmes (Chair)
Phone	530-538-7201
E-Mail	ejsymmes@ucanr.edu
Unit:	Butte County

Membership List
Tricoli, David		Dean's Office CA&ES (UCD)
	Supervisor	Plant Transformation Facility
AES Scientist
Adaskaveg, James		Plant Pathology
	Professor and Plant Pathologist	Mycology, plant pathology, ecology and epidimiology of fungi
Bostock, Richard		Plant Pathology - CAES
	Professor Plant Pathologist-AES	Physiology, biochemistry and molecular biology of host-pathogen interaction; diseases of fruit and nut crops
Brown, Patrick		Department of Plant Sciences
	Pomologist-AES Professor of Plant Nutrition	Plant mineral nutrition; root soil interaction; rhizosphere dynamics and genetic aspects of plant nutrition; function of boron in plants; sustainable agriculture
Dandekar, Abhaya		Department of Plant Sciences
	Professor Geneticist-AES	Transfer expression and regulation of 'transgenes' in tree crops; identification/ modification of useful genetic traits through analysis/evaluation of transgenic plants; transgenes, gene transfer, transgenic plants, gene expression, gene regulation
DeJong, Theodore		Department of Plant Sciences
	Emeritus Professor CE Pomologist-AES Plant Physiologist-AES	Environmental physiology; tree crop physiology; carbon partitioning and crop modeling; pomology; physiology and management of fruit tree crops; peach rootstock development and physiology; dried plum breeding
Dvorak, Jan		Department of Plant Sciences
	Professor V	Evolution of plant genomes and chromosomes; evolution of wheat and related species, construction of linkage maps based on molecular markers in wheat and related species in the tribe Triticeae; mechanisms of the action of the Ph1 gene of wheat on crossing over between homoeologous chromosomes; molecular mechanisms of salt stress tolerance in wheat and its improvement.
Wes, Hackett

Labavitch, John		Department of Plant Sciences
	Professor Pomologist-AES	Developmental and regulatory biology postharvest biology of fruits - emphasis on cell wall polysaccharide metabolism and biochemistry of plant-pathogen and plant-insect interactions
Lewis, Edwin		Nematology CAES
	Associate Professor	Entomopathogenic nematodes for insect pest management, their use as antagonists of plant-parasitic nematodes, and the biology and ecology of the black vine weevil.
Lindow, Steven		Plant & Microbial Biology
	Professor and Executive Associate Dean, CNR	Molecular and ecological studies of plant-associated bacteria
McGranahan, Gale		Department of Plant Sciences
	Pomologist-AES Emerita	Breeding, selection, genetics, foreign gene transfer and tissue culture of walnuts for rootstock and variety improvement
Michailides, Themis		Kearney Agricultural Research & Extension Center
	Plant Pathologist and Lecturer	Ecology, epidemiology and control of fungal diseases of fruit and nut crops and vines, postharvest diseases, aflatoxin and mycotoxins of nut crops and figs.
Millar, Jocelyn		Entomology (UCR)
	Entomologist Professor	Insect behavior; identification, synthesis, and testing of insect kairomones and pheromones; insect acoustic signaling
Mills, Nicholas		Environmental Science, Policy and Management (ESPM)
	Professor Entomologist-AES	Biological control of insect pests, ecology and insect parasitoids, tree fruit pests
Neale, David		Department of Plant Sciences
	Professor
Parfitt, Dan		Department of Plant Sciences
	Pomologist-AES	Genetics of fruit crops genetic diversity, germplasm use, pistachio breeding
Polito, Vito		Department of Plant Sciences
	Professor Pomologist-AES Chairman Department of Pomology Davis	Reproductive biology of tree-crop species: olive, walnut, pistachio, almond and other Mediterranean tree crops
Shackel, Kenneth		Department of Plant Sciences
	Professor /Pomologist-AES	The impact of tree and vine water status on productivity and the water relations and physiological activity of fruit
Teuber, Larry		Department of Plant Sciences
	Professor V	Genetics and biology of: floral characters influencing alfalfa pollination by honey bees, gene flow in honey bee cross pollinated crops, resistance to lygus bugs and whiteflies, Director University of California Foundation Seed Progarm
Welter, Stephen		ESPM - Organisms and the Environment
	Entomologist Professor ESPM Organisms and the Environment, Assoc. Dean Academic Affairs.	IPM of fruit and nut crops, Plant-insect interactions, Biological Control
Wes, Hackett

CE Advisor
Anderson, Kathleen		Stanislaus County
	Farm Advisor	Walnuts, Apricots, Apples, Cherries
Beede, Robert		Kings County
	(Retired) Farm Advisor Emeritus	Horticulture: Tree fruit, nuts, grapes
Bentley, Walter		Kearney Agricultural Research & Extension Center
	Integrated Pest Management Entomologist, Emeritus	Entomology
Bianchi, Mary		San Luis Obispo County
	Emeritus - Horticulture Farm Advisor	Horticulture, pomology, subtropicals, water management and water quality. Horticulture in San Luis Obispo County and Northern Santa Barbara County.
Buchner, Richard		Tehama County
	Orchard Advisor - Emeritus	Pomology for Tehama County. Strawberry nursery production in North Coast & Mountain Region
Caprile, Janet		Contra Costa County
	Farm Advisor	Commercial fruit, nut, vine, vegetable, field, specialty crops
Connell, Joseph		Butte County
	Farm Advisor Emeritus	Almonds, olives, citrus, subtropicals, ornamentals
Culumber, Mae		Fresno County
	Nut Crops Farm Advisor
Doll, David		Merced County
	Pomology Farm Advisor	Almonds, Pistachios, Walnuts, and Urban Forestry
Edstrom, John		Colusa County
	Farm Advisor emeritus	Almonds
Elkins, Rachel		Lake County
	County Director -Lake County, Pomology Farm Advisor in Lake and Mendocino Counties and Master Gardener Advisor in Lake County
Fichtner, Elizabeth		Tulare County
	Farm Advisor	Orchard Systems
Fulton, Allan		Tehama County
	Irrigation and Water Resources Advisor
Grant, Joseph		San Joaquin County
	Farm Advisor, Emeritus	walnuts, cherries, olives, miscellaneous fruits; fruit crops, integrated pest management
Hasey, Janine		Sutter-Yuba Counties
	Tree Crop Farm Advisor, County Director, Master Gardener Advisor	Pomology, Horticulture, Master Gardener Program
Haviland, David		Kern County
	Farm Advisor	Entomologist and Pest Management. Advise in identification and control of Pest.
Ingels, Chuck		Capitol Corridor MCP Cooperative Extension
	Farm Advisor	Tree crops, grapes, environmental horticulture, and Master Gardeners/urban horticulture. Areas of research and extension focus include IPM, evaluation of sustainable products and practices, water conservation and deficit irrigation, home orchards and vineyards, sustainable landscaping, alternative turfgrass species, and tree training, pruning, and grafting.
Jarvis-Shean, Katherine		Capitol Corridor MCP Cooperative Extension
	Orchard Systems Advisor
Krueger, William		Glenn County
	Farm Advisor Emeritus	All tree crops in Glenn County and olives in Tehama County, integrated pest management
Lightle, Dani		Glenn County
	Orchard Systems Advisor
Milliron, Luke		Butte County
	Area Sustainable Orchard Systems Advisor
Pickel, Carolyn		Integrated Pest Management (IPM) Statewide Program
	Area IPM Advisor, Emeritus	IPM programs
Rijal, Jhalendra		Stanislaus County
	Area IPM Advisor	Entomology, insect pest management, insect mating disruption, insect spatial distribution and quantitative sampling, insect behavior and chemical ecology
Schmierer, Jerry		Colusa County
	Farm Advisor Emeritus	Plant science, alfalfa, wheat,dry beans, corn, barley, and oil seed crops with speciality in precision agriculture and weed management.
Sibbett, G.		Tulare County
	Farm Advisor Emeritus	Pomology, horticulture
Symmes, Emily		Butte County
	Area IPM Advisor	Integrated pest management
Tollerup, Kris		Kearney Agricultural Research & Extension Center
	Cooperative Extension Advisor, IPM	Almond, Pistachio, Tree Fruit, Grapes
Wunderlich, Lynn		Central Sierra Cooperative Extension
	Farm Advisor	Viticulture and Pomology for the foothills; Sprayer calibration; Integrated Pest Management; Biological Control
Yaghmour, Mohammad		Kern County
	Area Orchard Systems Advisor
CE Specialist
Al-Khatib, Kassim		Department of Plant Sciences
	Professor, Plant Sciences	CE Specialist in Weed Sciences
Crisosto, Carlos		Kearney Agricultural Research & Extension Center
	CE Postharvest Physiologist	Extension and research on postharvest biology and technology of fruits; fruit quality and deterioration and handling systems
Flint, Mary Louise		Entomology (UCD)
	Extension Entomologist Emeritus, Entomology, UC Davis	Integrated Pest Management, biological control, landscape and garden IPM, information dissemination and entomology.
Goldhamer, David		Hydrology Program
	CE Water Management Specialist	Water management of horticultural crops, regulated deficit irrigation, plant water relations, plant-based water status sensors
Golino, Deborah		Foundation Plant Services - CAES
	CE Specialist Director Foundation Plant Services Plant Pathology Department	Virus diseases of horticultural crops and nursery clean stock programs
Hanson, Brad		Department of Plant Sciences
	CE Weed Specialist
Harris, Linda		Food Science & Technology
	CE Specialist-Food Safety Microbiology	Microbial food safety throughout the food chain with a focus on the microbiology of fresh fruits and vegetables and tree nuts.
Johnson, Marshall		Entomology (UCR)
	IPM Specialist and Research Entomologist, Emeritus	Integrated pest management of grapes, stone fruit, almonds and walnuts; biological control of arthropods; pesticide resistance in pests and natural enemies
Klonsky, Karen		Agricultural & Resource Economics
	Specialist in Cooperative Extension, Emerita	Farm Management and Production, Sustainable Agriculture and Organic Agriculture
Lampinen, Bruce		Department of Plant Sciences
	Integrated Orchard Management Walnut and Almond Specialist	Integrated Orchard Management with an emphasis on walnuts and almonds
McKenry, Michael		Nematology Department
	Emeritus Nematologist and CE Nematology Specialist, Emeritus	Field pathogenicity and practical control of nematodes in perennial crops
Mitcham, Elizabeth		Department of Plant Sciences
	CE & AES Postharvest Pomologist	Postharvest physiology and technology of fruit and nut crops; emphasis on maintaining flavor quality after harvest, enhancing consumption of produce, and reducing food loss. Also studying regulation of fruit ripening and mechanisms underlying calcium deficiency disorders in fruit.
Pan, Zhongli		Biological & Agricultural Engineering
	Adjunct Professor	Improving the value of agricultural products and their components through new and improved postharvest and processing technologies.
Prichard, Terry		Land, Air & Water Resources
	CE Irrigation Water Management Specialist	Irrigation water management, crop response to limited water supplies, water infiltration, Delta water quality and soil salinity issues
Ramos, David		Department of Plant Sciences
	Pomologist	Walnut production, tree training and pruning, high density management systems, cultivar and rootstock evaluations.
Sandoval Solis, Samuel		Land, Air & Water Resources
	Assistant Professor and Cooperative Extension Specialist in Water Resources	Water Resources Management
Schwankl, Lawrence		Kearney Agricultural Research & Extension Center
	CE Irrigation Specialist, Retired	Irrigation engineering, design, operation and management of irrigation systems, soil moisture monitoring, low-volume irrigation
Siebert, Jerome		Agricultural & Resource Economics & Policy
	CE specialist emeritus	Marketing, management and policy resource and environmental economics. Special emphasis on farm program and macro-economic policy relationships to agriculture
Thompson, James		Biological & Agricultural Engineering
	Emeritus Specialist in Cooperative Extension	Postharvest operations including drying and refrigeration of fruits, vegetables, cut flowers, tree nuts, and grains; transportation of agricultural commodities; energy management and alternative energy systems.
Trouillas, Florent		Plant Pathology - CAES
	Assistant Cooperative Extension Specialist	Fruit and Nut Crops
VanSteenwyk, Robert		Environmental Science, Policy and Management (ESPM)
	CE Entomologist	Deciduous fruits, nuts and vines
Westerdahl, Becky		Nematology CAES
	CE Specialist Professor	Applied nematology, integrated pest management
Westphal, Andreas		Kearney Agricultural Research & Extension Center

Wilson, Houston		Entomology (UCR)
	Assistant Cooperative Extension Specialist	Tree Crops IPM
Zaccaria, Daniele		Land, Air & Water Resources
	Assistant Agricultural Water Management Specialist in Cooperative Extension
Zalom, Frank		Entomology (UCD)
	Distinguished Professor, CE Specialist and Entomologist in the Agricultural Experiment Station	Fruit and Vegetable Crop Entomology; Integrated Pest Management
Other ANR
Brodt, Sonja		Sustainable Agriculture Research & Education Program
	Academic Coordinator, Ag, Resources & the Environment	Agriculture, Resources, and the Environment
DeMoura, Richard		Agricultural & Resource Economics
	Staff Research Associate	Cost Production Studies
Hendricks, Lonnie		Merced County
	Farm Advisor, Emeritus
Krochta, John		Food Science & Technology
	Professor Food Engineer Peter J. Shields Endowed Chair of Dairy Food Science	Edible films and coatings to control mass transfer in foods; controlled release of bioactive compounds from biopolymers; conversion of agricultural surpluses to fuels and chemicals; biochemical separations
Micke, Warren		Department of Plant Sciences
	Emeritus CE Pomologist	Cultural practices and production problems of almonds and walnuts.
O Reil, Wilbur
	Farm Advisor (Emeritus)
Olson, William
	County Director and Farm Advisor	Walnuts, Prunes ,
Potter, Dan		Department of Plant Sciences
	Professor and Plant Systematist	Phylogeny and systematics of horticultural crop plants and wild relatives, evolution of Rosaceae, molecular markers for walnut species and cultivars.
Van Horn, Mark		Agricultural Sustainability Institute
	Director, Student Farm
Zhang, Minghua		Land, Air & Water Resources

Non-UC
Aradhya, Mallikarjuna

Baumgartner, Kendra		Plant Pathology - CAES
	USDA-ARS research plant pathologist	grapevine diseases
Browne, Greg		Plant Pathology - CAES
	USDA Research Plant Pathologist	Soil-borne diseases of fruit and nut trees and other horticultural crops
Gut, Larry

Kluepfel, Daniel		Plant Pathology - CAES

Light, Doug

Preece, John
	Supervisory Research Leader	Horticulture
Rosecrance, Rich

Seybold, Steven
	Research Entomologist
User, Unverified

Other UC
Leslie, Chuck

Metcalf, Samuel

Membership Totals
Number of Members		99
ANR Members		89
Non-ANR		10
Info Only		0