Program Team/Workgroup Directory/Information

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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	Clarissa Reyes (Chair)
Phone	530-822-7515
E-Mail	clareyes@ucanr.edu
Unit:	Sutter-Yuba Counties

Membership List
Tricoli, David		Dean's Office CA&ES (UCD)
	Supervisor	Plant Transformation Facility
AES Scientist
Adaskaveg, James		Plant Pathology
	Professor and Plant Pathologist (test editing)	Mycology, plant pathology, ecology and epidimiology of fungi (test edits)
Bostock, Richard		Plant Pathology - CAES
	Distinguished 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	Molecular, biochemical, genomic and epigenetic analysis of tree fruit and nut genetic and biochemical traits to improve management strategies
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		Dean's Office CNR
	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)
	Distinguished Professor, Entomology, Cooperating Faculty, Chemistry	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	Plant-based irrigation management, particularly in trees and vines. Use of the pressure chamber and stem water potential (SWP) as a measure of plant stress, and the use of stress to optimize productivity and save water.
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 Cooperative Extension
	Farm Advisor	Commercial fruit, nut, vine, vegetable, field, specialty crops
Connell, Joseph
	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
	Pomology Farm Advisor in Lake and Mendocino Counties and Master Gardener Advisor in Lake County - Emeritus
Fichtner, Elizabeth		Tulare County
	Farm Advisor	Orchard Systems
Fulton, Allan		Glenn County
	Irrigation and Water Resources Advisor emeritus
Grant, Joseph
	Farm Advisor, Emeritus	walnuts, cherries, olives, miscellaneous fruits; fruit crops, integrated pest management
Hasey, Janine		Sutter-Yuba Counties
	Tree Crop and Environmental Horticulture Advisor Emeritus, 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
Kron, Cindy		Sonoma County
	North Coast Area IPM Advisor	Integrated Pest Management, Entomology, Viticulture
Krueger, William		Glenn County
	Farm Advisor Emeritus	All tree crops in Glenn County and olives in Tehama County, integrated pest management
Lightle, Dani		Tehama County
	Orchard Systems Advisor
Milliron, Luke		Butte County
	Orchard Systems Advisor
Mohamed, Abdelmoneim		Stanislaus County
	Irrigation and Soils Advisor	Irrigation systems, Groundwater sustainability, Precision irrigation in trees and vines
Mokwunye, Idongesit		Integrated Pest Management (IPM) Statewide Program
	Area CE IPM Entomology Advisor	Pistachio, Almond, Walnut, Stone fruits and Table grapes
Ott, Natalia		Tehama County
	Orchard Crops Advisor	Walnuts, Prunes, Almonds, Olives
Pickel, Carolyn		Integrated Pest Management (IPM) Statewide Program
	Area IPM Advisor, Emeritus	IPM programs
Reyes, Clarissa		Sutter-Yuba Counties
	Orchard Systems Advisor	Plant-water relations, drought physiology; walnut, peach, kiwifruit
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.
	Farm Advisor Emeritus	Pomology, horticulture
Tollerup, Kris		Kearney Agricultural Research & Extension Center
	Cooperative Extension Advisor, IPM	Almond, Pistachio, Tree Fruit, Grapes
Wheeler-Dykes, Becky		Glenn County
	Orchard Systems & Weed Ecology Advisor
Wunderlich, Lynn		Amador County
	Farm Advisor	Viticulture and Pomology for the foothills; Sprayer calibration; Integrated Pest Management; Biological Control
Yaghmour, Mohammad		Kern County
	Area Orchard Systems Advisor
Zuber, Cameron		Merced County
	Orchard Crops Farm Advisor	Merced County: Deciduous trees, not including pistachios and figs. Madera County: Walnut.
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 and nuts quality and deterioration and handling systems
Das, Srabani		UC Merced - Cooperative Extension Specialist
	Assistant CE Specialist (Regenerative Agriculture)	soil health, soil carbon, perennial cropping, regenerative agriculture
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, Bradley		Department of Plant Sciences
	Cooperative Extension Specialist	Chemical and non-chemical weed control in agricultural crops with a focus on herbicide peformance, resistance, crop safety, and environmental fate.
Harris, Linda J		Food Science & Technology
	Professor of Cooperative Extension	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
Larbi, Peter		Kearney Agricultural Research & Extension Center
	Assistant Cooperative Extension Specialist	Agricultural Application Engineering/Spray Application Engineering
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
	Director, Postharvest Center	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 def
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
	Associate Professor and Cooperative Extension Specialist in Water Resources	Water Resources Management, Environmental Flows, Agricultural Water management, Risk Analysis, Cost Benefit Analysis, Science Communication
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
	Associate Cooperative Extension Specialist	Fruit and Nut Crops, Plant Pathology
VanSteenwyk, Robert		Environmental Science, Policy and Management (ESPM)
	CE Entomologist	Deciduous fruits, nuts and vines
Westerdahl, Becky		Nematology CAES
	CE Specialistáá Professor	Applied nematology, integrated pest management
Westphal, Andreas		Kearney Agricultural Research & Extension Center
	UC Riverside Professor of Cooperative Extension Nematology, Tokuji and Bettie L. Furuta Endowed Chair	Applied Nematology in perennial crops including walnut, almond, pistachio, grape and citrus
Wilson, Houston		Entomology (UCR)
	Assistant Cooperative Extension Specialist	Orchard/vineyard IPM, insect ecology, organic agriculture, agroecology
Zaccaria, Daniele		Land, Air & Water Resources
	Associate Professor and Agricultural Water Management Specialist in Cooperative Extension	Agricultural water management and irrigation
Zalom, Frank		Entomology (UCD)
	Distinguished Professor	Fruit and Vegetable Crop Entomology; Integrated Pest Management
Other ANR
Brodt, Sonja		Sustainable Agriculture Research & Education Program (SAREP)
	Academic Coordinator (Agriculture & Environment), UC SAREP	Agriculture and 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
Metcalf, Samuel
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
Membership Totals
Number of Members		107
ANR Members		97
Non-ANR		10
Info Only		0