Cooperative Extension Specialists

Agricultural and Resource Economics

Name Area of Expertise
Saitone, Tina
Dairy production, marketing and policy, agricultural and natural resource policy, biotechnology, technological change, public policy issues

Animal Science

Name Area of Expertise
Conte, Fred S
(530) 752-7689
Research interests: Software simulation for shellfish sanitation, information transfer and commercial sturgeon production.
Meyer, Deanne
(530) 752-9391
Animal waste management.
Mitloehner, Frank M.
(530) 752-3936
Air quality research related to livestock production, especially quantification of ammonia, dust, and odor emissions in dairies, beef feedlots, and poultry operations; environmental physiology research, focusing on effects of air emissions on animal health and welfare.
Oltjen, James W
(530) 752-5650
On-farm animal management systems; on-farm implementation of strategies to reduce the environmental impact of cows.
Robinson, Peter H
(530) 754-7565
On-farm animal management systems; on-farm implementation of strategies to reduce the environmental impact of cows.
Van Eenennaam, Alison
(530) 752-7942
Animal genomics, biotechnology.

Entomology and Nematology

Name Area of Expertise
Ian Grettenberger
(530) 752-0473

Field Crops; Vegetable Crops; Insects, Mites, and other Arthropods affecting Plants; Biological Control of Pests affecting Plants; Beneficial Insects.

Elina Niño

Honey Bee Biology, Health, and Breeding, Behavior, Reproductive Physiology, Genomics, Chemical Ecology, Sociology of Beekeeping.

Zalom, Frank G
(530) 752-0275
Integrated Pest Management (IPM), Tree Crops, Small Fruits, and Vegetable Crops Entomology, Water Quality, Invasive Species

Environmental Science and Policy

Name Area of Expertise
Grosholz, Edwin D
(530) 752-9151
Population dynamics and community ecology, invasion biology, conservation biology and biodiversity of marine and estuarine systems, applications of ecological theory to coastal management problems.

Food Science and Technology

Name Area of Expertise
Barrett, Diane M.
(530) 752-4800
Effects of raw material characteristics (cultivar, maturity, organic/conventional production etc.) and processing (aseptic, canning, drying, freezing, high pressure, etc.) on color, texture, flavor and nutritional quality of fruit and vegetable products.
Bruhn, Christine M
(530) 752-2774
Consumer Issues in food safety and quality and new technolgies such as food irradiation and biotechnology.
Harris, Linda J.
(530) 754-9485
Microbial food safety with emphasis on fruits, vegetables and tree nuts, applied microbiology
Rosenberg, Moshe
(530) 752-4682
Food engineering, food technology, dairy chemistry, dairy technology, dairy products, food microstructure, microencapsulation.
Winter, Carl K
(530) 752- 5448
Food toxicology, risk assessment, risk communication.

Human Ecology

Name Area of Expertise
Campbell, David C
(530) 754-4328
Intersection between public policy and community development processes at the local levelÑfocusing on governance, civic engagement, citizenship, and economic development.
Gupta, Clare
Research interests: Translational and interdisciplinary research, alternative food networks and community food systems, food politics and agro-food movements (e.g. local food, food sovereignty,) and community-based resource management.

Koundinya, Vikram

Program evaluation, needs assessments and other extension educational processes.
Ontai, Lenna
(530) 752-6410
Research focuses on understanding early socialization processes between parents and young children. This research program aims to understand factors that affect parents' socialization efforts such as income and cultural background. She is active in translating and disseminating current research findings in the areas of parenting, early social development and child care to programs for families with young children.
Smith, Martin H.
(530) 752-7035
Youth scientific literacy. Curriculum development and educator professional development. Nonformal science education, inquiry-based learning, experiential learning, bio-security education, and environmental education.

Taylor, Keith

Community & Regional Development

Trzesniewski, Kali
(530) 752-2595

How personality and social factors influence a person’s development from conception to death. How to raise children to be healthy, productive members of society. The developmental origins, developmental course, and interrelations among self-esteem, achievement, and antisocial behavior.



Land, Air and Water Resources

Name Area of Expertise
Grattan, Stephen R
(530) 752-4618
Salinity effects on plants at the plant and field scale; agricultural drainage water reuse and management; salinity-trace element interactions in plants; evapotranspiration.
Harter, Thomas
(530) 752-6998
Flow and transport processes in groundwater and in the vadose zone; non-point source pollution of groundwater; groundwater remediation; groundwater resources management; geostatistics; stochastic analysis; numerical modeling.
Jackson, Louise E
(530) 754-9116
Soil microbial carbon and nitrogen cycling; Mycorrhizae; Plant water relations and nutrient uptake; Organic and conventional vegetable production; Reduced tillage systems; Grassland restoration ecology.
O'Geen, Anthony T.
(530) 752-2155
Soil-landscape relationships, hydropedology, application of digital soil databases, soil survey; pedologic and hydrologic characterization of deep regolith; management of soil physical properties; macro- and mesofauna in soil.
Pettygrove, G. Stuart
(530) 754-9646
Soil fertility, nitrate and phosphate pollution of water, dairy manure management, precision agriculture and site-specific farming, land application of wastes and wastewaters.
Sandoval Solis, Samuel
(530) 752-2533
Sustainable water resource systems. Shared-vision water planning. Modeling and decision-support systems. Environmental restoration and conservation. Climate change and water management strategies.
Schwankl, Larry
(559) 646-6500
Drip, sprinkler, and flood irrigation systems with emphasis on irrigation of trees and vines. Irrigation system maintenance and chemigation. Irrigation scheduling using soil moisture monitoring and evapotranspiration techniques.
Snyder, Richard L
(530) 752-4628
Irrigation scheduling; freeze/frost protection; evapotranspiration modeling
Zaccaria, Daniele
(530) 752-4628
Irrigation Specialist


Name Area of Expertise
Kaiser, Lucia L.
(530) 754-9063
Examining the impact of acculturation and food security on the child-parent feeding relationship among Latinos, developing tools to evaluate nutrition education, and evaluating lifeskills education on transition from welfare to work.
Townsend, Marilyn S.
(530) 754-9222
Evaluation studies of intervention programs and integrates theories and methodologies from cognitive psychology with dietary behavior change strategies. Nutrition education (research and programs) with an emphasis on children and adolescents. She is involved in theory-driven program development and implementation, nutrition educational methodologies and program evaluation. Her work also involves health behavior change strategies.
Zidenberg-Cherr, Sheri A
(530) 752-3817
A major focus is the study of the nutritional status of populations considered at risk of nutritional deficiencies and exposure to environmental and physiological stresses. Another aspect involves the development and testing of new approaches to educate the public such as through the education of primary targets for consumer questions, i.e. physicians.

Plant Pathology

Name Area of Expertise
Akif Eskalen

Trees, vines, and small fruits.

Golino, Deborah A
(530) 754-8102
Fruit crop clean stock programs; Viral diseases of grapevines and fruit trees; Vector plant pathology; Phytosanitary regulations and law.
Subbarao, Krishnamurthy V
(408) 755-2890
Epidemiology and integrated control of fungal diseases of vegetables, cool-season vegetables, verticillium of strawberries, lettuce and other crops, methyl bromide alternatives.

Cassandra Swett

Fungal Pathogen ecology in vegetables an field crops; effects of adaptive water use on plant-pathogen interactions.

Florent Trouillas

Etiology, biology, epidemiology, and integrated control of fruit and nut crop diseases.

Plant Sciences

Name Area of Expertise
Ajwa, Husein A.
(831) 755-2823
Soil and water management, methyl bromide alternatives, cool-season vegetables. Crop and Ecosystem Sciences Section
Al-Khatib, Kassim
(530) 752-835-
Weed ecology and integrated weed management. Pesticide drift.
Cantwell, Marita
(530) 752-7305
Postharvest physiology, handling, and storage of vegetables, including specialty and fresh cut vegetables. Horticulture Section
Crisosto, Carlos
(559) 646-6596
Postharvest handling systems to maintain quality and safety of stone fruit and kiwifruit. Horticulture Section
DiTomaso, Joseph M.
(530) 754-8715
Taxonomy, ecology, physiology, and control of rangeland, forestry and wetland weeds; poisonous plants. Crop and Ecosystem Sciences Section
Evans, Richard Y
(530) 752-6617
Management of commercial flower and nursery crops; nutrition of ornamental plants; container soil-plant interactions; propagation, production, and field establishment of plants for ecological restoration. Section: Primary - Horticulture; Secondary - Crop and Ecosystem Sciences
Fennimore, Steven A.
(831) 755-2896
Weed management in vegetable crops and small fruits as well as weed seed physiology and seed bank ecology. Crop and Ecosystem Sciences Section
Ferguson, Louise
(559) 737-3061
Pistachios, olives, figs, citrus, persimmons. Horticulture Section
Hanson, Brad
(530) 752-8115
Weed management in perennial crops. Alternatives to methyl bromide. Environmental sustainability of perennial cropping systems. Integrated pest management solutions for weeds.
Hartz, Timothy K
(530) 752-1738
Culture and management of warm season vegetables; soil and plant fertility; crop stand establishment. Horticulture Section
Hill, James E
(530) 752-3458
Conducts research and education programs on rice based cropping systems with focus on production technologies such as direct seeding; weed control; nutrition; residue management; and the relationship of these factors to environmental quality. Crop and Ecosystem Sciences Section
Hutmacher, Robert B
(661) 746-8020
Conducts research and extension education programs in cotton production systems and irrigation management and plant water stress. In cotton, research efforts include varietal evaluations, irrigation and nutrient management, use of plant growth regulators, and cultural controls and host plant resistance to deal with specific fungal diseases. Crop and Ecosystem Sciences Section
Kaffka, Stephen R
(530) 752 8108
Investigates ways to improve crop production efficiency and environmental quality relative to crop prodution. Works at the commodity and farming systems levels. Crop and Ecosystem Sciences Section
Lampinen, Bruce D.
(530) 752-2588
Coordination of extension teaching and research activities for almonds and walnuts on a statewide basis. Horticulture Section
Lieth J. Heiner
(530) 752-7198
Crop ecology of greenhouse and nursery crops; greenhouse environment control automation; modeling of ornamental crops; automated irrigation. Section: Primary - Horticulture; Secondary - Crop and Ecosystem Sciences
Mitcham, Elizabeth J
(530) 752-7512
Alternatives to postharvest chemicals for control of insects, decay and physiological disorders; fruit responses to postharvest handling systems. Apple, pear, cherry, blueberry, strawberry, table grapes, walnut, almond, pistachio, tropical fruit. Horticulture Section
Mitchell, Jeffrey P
(559) 646-6565
Conservation farming systems. Conservation tillage production alternatives. Air, soil and water quality in reduced till systems. Cropping diversity, rotations, and intensification in no-till production. Crop and Ecosystem Sciences Section
Oki, Lorence R
(530) 754-4135
Irrigation managment in urban horticulture; water quality effects on plant growth; Evaluation and introduction of California native plants for use in landscape horticulture. Section: Primary - Horticulture; Secondary - Crop and Ecosystem Sciences
Putnam, Daniel H
(530) 752- 8982
Alfalfa and forage crops systems, alternative field crops, crop ecology. Crop and Ecosystem Sciences Section
Suslow, Trevor V.
(530) 754-8313
Integrated technologies for posthavest quality; postharvest pathology and biocontrol; food safety; postharvest quality and safety issues; refrigerated transportation. Horticulture Section
Tate, Kenneth W.
(530) 754-8988
Rangeland hydrology, water quality, nonpoint source pollution, grazing management. Crop and Ecosystem Sciences Section

Viticulture and Enology

Name Area of Expertise
Fidelibus, Matthew W
(559) 646-6510
Applied and basic research on grapes for raisin, table, and wine.
Oberholster, Anita
(530) 754-4866
Analytical chemistry of wine. The influence of winemaking techniques on phenol composition and quality. Polymeric pigment and tannin formation and composition Abiotic factors on grape tannin and norisoprenoid precursor (carotenoids) and chlorophyll development.
Kurtural, Kaan
(707) 944-0126

Dr. Kurtural’s research focuses on three main parts with short and long-term outcomes:

1) improving production efficiency in vineyards by applying principles of canopy and crop load management using vineyard mechanization and applied water amounts;

2) identifying quality improvement traits in berry composition by translating fundamental research into applied production practices in vineyards;

3) evaluating alternative methods of control invasive species in vineyards.

Wildlife, Fish and Conservation Biology

Name Area of Expertise
Thompson, Lisa C
(530) 754-5732
Adaptive management of anadromous and inland fish populations; population dynamics modeling; impacts of dams and other water diversions on aquatic ecosystems; lake fertilization; food webs in rivers, lakes and reservoirs; terrestrial-aquatic linkages in watersheds.

College of Agricultural and Environmental Sciences Dean's Office

Name Area of Expertise
Joy, Amy B
(530) 752-7959
Community nutrition, with an emphasis on improving the nutritional status of high risk audiences. Current areas of research are: (a) development and testing of nutrition education methodologies; (b) identification of dietary intake patterns and nutrition-related practices of high-risk audiences; (c) development of new ways to measure nutritional status; and (d) nutrition education interventions for improving nutritional status in high-risk audiences