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Workgroup Information European Pear
Summary	The European Pear Workgroup continues to focus more on horticulture, particularly new varieties, rootstocks, and planting systems to accommodate labor efficient orchard operations using orchard platforms and other means. There is also new information being developed on using oil to mitigate the effects of poor chilling and increase fruit size and quality. This occurs coincidently with the loss of the Extension Specialist covering pears and downsizing of applied horticulturists at the campus level. County-based advisors are increasingly working with Pacific Northwest colleagues with similar interests and goals. A productive relationship with the Agricultural Ergonomics Research Center has also been established to study platform machines. Pest management activities continue to focus on alternatives to broad-spectrum pesticides, e.g. organic codling moth (CM) control, development of a new bactericide, i.e., kasugamycin, for fire blight management, secondary pests in mating disruption programs etc. Resistance to streptomycin is widespread and terramycin resistance has been recently described in the state for the first time worldwide. Resistance to scab fungicides is also of major concern to growers.Statewide surveys have been initiated in the last two years. A major accomplishment is the release (in spring 2007) of the new Pear Production and Handling Manual.
Workgroup Chair Information
Name	Rachel Elkins (Chair)
Phone	(707) 263-6838
E-Mail	rbelkins@ucanr.edu
Unit:	Lake County
Location:	UC Cooperative Extension 883 Lakeport Boulevard Lakeport, 95453

Membership List
Haug, Megan
AES Scientist
Adaskaveg, James		Plant Pathology
	Professor and Plant Pathologist (test editing)	Mycology, plant pathology, ecology and epidimiology of fungi (test edits)
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
Brummer, Charles
	Director, Plant Breeding Center	Plant Breeding, Alfalfa, Tall Fescue, Forages, Wild Rice, Spinach, Sustainable Agriculture, Organic Agriculture
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
Delwiche, Michael		Biological & Agricultural Engineering
	Professor Emeritus	Electronic instrumentation and sensor development in biological systems; biosensors; postharvest engineering; digital signal and image processing; computer control; biological control of insect pests.
Duraj, Victor
Fathallah, Fadi		Biological & Agricultural Engineering
	Professor	Occupational biomechanics and ergonomics with special emphasis on agricultural environments
Leslie, Chuck
Lindow, Steven		Dean's Office CNR
	Professor and Executive Associate Dean, CNR	Molecular and ecological studies of plant-associated bacteria
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
Montanari, Sara
		Pear genetics and breeding
Neale, David		Department of Plant Sciences
	Professor
Rizzo, David		Plant Pathology - CAES
	Department Chair and Professor	Mycology; fungal diseases of woody plants, fungal ecology; forest pathology
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.
Slaughter, David		Biological & Agricultural Engineering
	Professor	Instrumentation and postharvest engineering for biological materials; packaging, handling, storage and transportation of agricultural commodities; nondestructive measurement of quality and composition of biological materials; robotics, control and vision
Sumner, Daniel		Agricultural Issues Center
	Frank Buck Jr. Chair Professor	Economics of Agricultural Issues
Upadhyahya, Shrini		UC Davis Dept. Bio and Ag Engineering
	Professor	precision agriculture, machinery design
Volder, Astrid		Department of Plant Sciences
	Professor	Root biology, tree systems, whole plant physiology, climate change
Vougioukas, Stavros		Biological & Agricultural Engineering
	Associate Professor	Mechanization, Robotics, Automation
ZWIENIECKI, MACIEJ A
	AGRON AES	Plant water relations, perenial plants physiology, dormancy, non-structural carbohydrates
CE Advisor
Caprile - Emeritus, Janet		Contra Costa County Cooperative Extension
	Farm Advisor	Commercial fruit, nut, vine, vegetable, field, specialty crops
Elkins, Rachel		Lake County
	Pomology Farm Advisor in Lake and Mendocino Counties and Master Gardener Advisor in Lake County - Emeritus
Greer, Christopher		San Luis Obispo County
	Area Cooperative Extension Advisor - Integrated Pest Management	Integrated Pest Management of Agricultural Crops
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
Roncoroni, John		Napa County
	Weed Science Farm Advisor, Emeritus	Weed Control and Vegetation Management in Perennial Crops, Covercrops and Aquatic Weed Control
Varela, Lucia		Integrated Pest Management (IPM) Statewide Program
	North Coast IPM Advisor - Emeritus	Apples, pears, wine grapes, pest management
CE Specialist
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
Donis-Gonzalez, Irwin		Biological & Agricultural Engineering
	Associate Professor of Cooperative Extension in Postharvest Engineering	Postharvest Engineering
Gubler, Walter		Plant Pathology - CAES
	Extension Plant Pathologist	Trees, vines, small fruits
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.
Lampinen, Bruce		Department of Plant Sciences
	Integrated Orchard Management, Walnut and Almond Specialist	Integrated Orchard Management with an emphasis on walnuts and almonds
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
(info only) Suslow, Trevor		Department of Plant Sciences
	Extension Research Specialist	Preharvest to Postharvest Microbial food safety systems,postharvest transportation, Postharvest pathology
VanSteenwyk, Robert		Environmental Science, Policy and Management (ESPM)
	CE Entomologist	Deciduous fruits, nuts and vines
Other ANR
Biasi, Bill		Department of Plant Sciences
	Staff Research Associate	Postharvest Fruits & Nuts
Farrar, James		Integrated Pest Management (IPM) Statewide Program
	Director, Statewide IPM Program	IPM, integrated pest management, plant pathology, vegetable diseases, fungi
UC Davis, FNRIC
(info only) Frost, William		Central Sierra Cooperative Extension
	CE Advisor, Emeritus
Martin, Tunyalee		Integrated Pest Management (IPM) Statewide Program
	Associate Director for Communications	Leads UC IPM communications, manages IPM publication projects, and supervises editorial and technical staff developing and producing IPM outreach materials for Web and print.
Non-UC
Bassil, Nahla
Baumgartner, Kendra		Plant Pathology - CAES
	USDA-ARS research plant pathologist	grapevine diseases
Bell, Richard
	Research Horticulturist	Pear breeding and genetics
Beumel, Cliff
		nursery
Browne, Greg		Plant Pathology - CAES
	USDA Research Plant Pathologist	Soil-borne diseases of fruit and nut trees and other horticultural crops
Callis, John
Fleck, Chuck
	R&D and Product Development
Kluepfel, Daniel		Plant Pathology - CAES
Knight, Alan
	Research Entomologist
Light, Doug
McCaa, Pat
McClain, Bob
		Research Coordinator, California Pear Advisory Board
(info only) Moore, Denise
Moro, Jennifer		Fowler Nurseries
	Research and Product Development Director	propagation, evaluation, horticulture
Norelli, Jay		USDA-ARS-AFRS
	Research Plant Pathologist	disease resistance, management
Ohmart, Cliff
Postman, Joseph
Reed, Barbara		Dept. Horticulture
	Researcher	plant propagation
Seybold, Steven
Wada, Sugae		Dept. Horticulture
	Researcher	plant propagation
Zanobini, Chris
Membership Totals
Number of Members		64
ANR Members		43
Non-ANR		21
Info Only		3