University of California, Agriculture & Natural Resources
University of California, Agriculture & Natural Resources
University of California, Agriculture & Natural Resources
University of California
University of California, Agriculture & Natural Resources

UCCE Centennial Timeline

The 100-year anniversary of the signing of the Smith-Lever Act of 1914, which officially created the national Cooperative Extension System, occurs May 8, 2014. Cooperative Extension is administered in each state by a land-grant college. In California, the University of California System is the land-grant institution. Below is a timeline of UC Cooperative Extension’s development.


1862 - Signing of the Morrill Act

President Abraham Lincoln signs the Morrill Act, authorizing federal funds for the development of agricultural "land-grant" colleges in each state.

1868 - UC opens its doors for the first time

University of California opens its doors to teach "agriculture, mining and the mechanical arts."

1887 - Signing of the Hatch Act

The Hatch Act establishes federal funding for agricultural research in state land-grant colleges.

President Abraham Lincoln
President Abraham Lincoln



1913 - First UC Agricultural Clubs (precursors to 4-H)

UC Agricultural Clubs are formed at Arcata, Ferndale and Fortuna. Agriculture Clubs like these, organized by UC in the early 1900s, evolved into today's 4-H program (see 1928, below).

1913 - First UC farm advisor hired

Andrew Hansen Christiansen becomes the first UC Extension farm advisor working in Humboldt County. His hiring is the result of a cooperative agreement between UC, the Humboldt County Board of Supervisors, the Ferndale Dairymen's Association and the county Chamber of Commerce.  

Learn more about Humboldt County becoming the first Cooperative Extension site in California by visiting their website here.

1914 - Smith-Lever Act establishes Cooperative Extension nationwide

Congress passes the Smith-Lever Act, making federal funds available for extension work.

1915 - UC Agricultural Extension Service (later renamed "Cooperative Extension") spreads to four more counties

UC Agricultural Extension Service farm advisors are appointed in Glenn, Solano, Stanislaus and Placer counties.

1916 - Director's report describes the role of farm advisors

UC Agricultural Extension Service director's report states that each farm advisor is "typically called each week to visit 16 farms, hold 2.8 meetings with an average attendance of 101, and travel 277 miles."

1917 - "Food for Victory"

Emergency war appropriations from 1917 through 1919 provide a flush of growth for UC Agricultural Extension Service as "Food for Victory" becomes a national priority.

1918 - First UC Extension research specialist is hired

The first Agricultural Extension Service specialist, a poultry man, is hired. His goal: to double egg production. At the time, laying hens averaged 80 eggs per year.

1919 - B. H. Crocheron appointed director of UC Agricultural Extension Service

B. H. Crocheron, a young Cornell University graduate and director of an agricultural high school in Maryland, is recruited to lead UC Agricultural Extension, a position he holds until 1948, a 35-year tenure.

2 "war gardeners"
B.H. Crocheron
B.H. Crocheron


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1920 - Week-long traveling conferences become an AES tradition

B. H. Crocheron establishes week-long traveling conferences, which continue periodically through 1930. For each conference, a caravan of automobiles will travel several hundred miles, carrying county farm advisors and Farm Bureau representatives to a series of stops statewide where they view selected farms and other sites. The tours, following Crocheron's direction, include a bugle call every morning to signal that it's time to form up the caravan.

1920 - Farm Bureau centers are established in more than 500 rural communities

Crocheron insists that no county will be given a farm advisor until it has established a Farm Bureau, consisting of 20 percent of the county's farmers, to organize the advisor's work.

1921 - Volunteer leadership instituted for youth Agricultural Clubs

The volunteer leader concept is implemented for boys' and girls' Agricultural Clubs organized by farm advisors in high schools, establishin the basic structure and philosophy that has carried forward to today's 4-H Program.

1922 - Farmers begin to acquire tractors for the first time

UC Agricultural Extension Service holds one-week schools in 12 counties to teach farmers how to adjust and repair their new farm machinery.

1923 - UC Agricultural Extension Service completes its first decade!

Agricultural Extension Service now consists of 40 farm advisors, 33 assistant farm advisors and 21 home demonstration agents working in county offices.

1924 - Outbreak of foot and mouth disease

An outbreak of foot and mouth disease creates serious problems in some areas. Some farms are quarantined. UC Extension workers help bring the disease under control.

1925 - Hilgardia is first published

Quickly becoming a highly respected journal of agricultural science, Hilgardia continues a series of technical papers that began publication two years earlier.

1926 - Bulletin and circular publication begins

Between 1926 and 1930, UC Agricultural Extension Service publishes hundreds of bulletins and circulars on an astonishing variety of subjects.

1927 - Farmers start to specialize; UC AES responds

Farmers are moving away from running all-crop farms and toward specialization. UC Extension specialists are soon specializing too, working across the state in such areas as poultry, dairying, citrus, walnuts and agricultural engineering.

1928 – Agriculture Clubs officially become 4-H Clubs

"4-H" appears for the first time in California reports on youth work.

1929 - Agricultural Extension Service to the rescue

UC AES provides emergency assistance when a break in the St. Francis Dam inundates portions of Ventura and Los Angeles counties.

1929 - Crocheron investigates specialty crop markets; fall brings onset of the Great Depression

Extension Director Crocheron, backed by the U.S. Department of Commerce, embarks on an 8-month fact-finding tour of the Far East to determine potential markets abroad for California specialty crops. His outlook is not optimistic. In fall of the year, October 29, 1929 marks the start of years of economic hard times, the Great Depression.

Farm advisors
Farm advisors
Field Day caravan, Advisors car on the far left
Field Day caravan, Advisors car on the far left
1928 Traveling Agriculture Education train car
1928 Traveling Agriculture Education train car
1920s Tractor repair schools
1920s Tractor repair schools
4-H youth picnic
4-H youth picnic
Flood damage restoration
Flood damage restoration


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1930 - UC Agricultural Extension Service focus: the practical application of science to agriculture

Researchers make significant progress in soil fertility studies. New chemical dusts and sprays are introduced for control of smut and fungus on crops. UC-developed plans for barns and other outbuildings are promoted to the farming community.

1932 - "Cal-Approved" seed quality program begins

The "Cal-Approved" seed program is instituted to ensure the availability of high-quality seed for standard and improved crop varieties.

1933 - Agricultural Extension Service spreads to Siskiyou

UC Agricultural Extension Service opens a new office in Siskiyou County.

1934 - Agricultural Adjustment Administration programs draw on UC Agricultural Extension Service staff

As part of the national recovery effort, Agricultural Extension Service staff are tapped to help the federal government implement, direct and administer Agricultural Adjustment Administration programs that are established to help farmers stabilize their income.

1934 - Severe drought hits California

Eighteen counties in drought-stricken Southern California are declared emergency areas eligible for federal funds. UC Agricultural Extension Service farm advisors serve as government agents, purchasing livestock in the hardest-hit areas.

1935 - Windbreaks protect Southern California citrus

At the encouragement of a UC forestry specialist, growers plant more than 2,000 miles of windbreak trees to guard their Southern California citrus groves.

1936 - Soil Conservation and Domestic Allotment Act approved by Congress

Congress approves the Soil Conservation and Domestic Allotment Act to conserve soil and prevent erosion. The new federal law gives Agricultural Extension Service agents responsibility for carrying out the organizational work.

1937 - George B. Alcorn joins UC Agricultural Extension Service as an agricultural economist

George B. Alcorn, holding a UC Berkeley master's degree in agricultural economics, would eventually serve as the third director (1956–1975) of UC Agricultural Extension Service and oversee an era of huge expansion and modernization for the industry.

1938 - Pilot land-use planning programs begin

Federal-state agreements establish a pilot land-use planning program in counties throughout the U.S. The UC Agricultural Extension Service monitors these programs in Riverside, Kern, Sonoma and Yuba counties.

Early vineyard spray application
Early vineyard spray application
Farmer and Advisor
Farmer and Advisor
Humboldt County farmer
Humboldt County farmer
Stockmen, Advisor and Rancher confer about swine
Stockmen, Advisor and Rancher confer about swine


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1940 - Agricultural Extension Service supports wartime efforts

Farm advisors and home demonstration agents provide leadership on wartime committees, conduct war bond campaigns, provide information on blackouts and organize a state militia that recruits more than 23,000 volunteers.

1941 - Victory gardens

Victory gardens and rural fire protection are important areas of UC Agricultural Extension Service work.

1942 - UC Agricultural Extension Service responds to Pearl Harbor

In response to the bombing of Pearl Harbor, UC Agricultural Extension Service agents organize the Emergency Farm Fire Protection Project, forming more than 2,000 volunteer fire companies in 42 counties, with a roster of 28,200 fire fighters, to thwart possible incendiary attacks.

1942 - California Minute Men formed

Director Crocheron organizes a rural militia, the California Minute Men, and 20,000 men sign up for reserve duty through county Agricultural Extension Service offices.

1943 - UC Agricultural Extension Service ensures adequate supply of farm workers for wartime efforts

Extension is charged with responsibility for administering the Emergency Farm Labor Project to ensure an adequate supply of workers for wartime agricultural production.

1944 - Agricultural Extension Service spreads to San Mateo County

UC Agricultural Extension Service opens a new Ag Extension office serving San Mateo County.

1945 - Better understanding of range needs for grazing cattle

With establishment of the US Forest Service and national forests, ranchers encounter severe limitations on grazing range for their livestock. Agricultural Extension Service advisors step in to help determine the most efficient locations and methods for feeding cattle.

1946 - UC Agricultural Extension Service continues to grow

Director Crocheron appoints 60 new extension agents.

1947 - ... and grow

Another 78 new extension agents are hired.

1948 - Sudden death of Director Crocheron ends an era

Ag Extension acting director Chester Rubel eulogizes, "...a deep understanding of rural problems, a genius for organization, and a devotion to agriculture and to rural people...made [Crocheron] an outstanding leader. The contributions which he made to agricultural thought were brilliant. The foundations which he laid are sound and enduring. ... His work will go on."

1949 - Reorganization of UC Agricultural Extension Service

Under the guidance of new UC Agricultural Extension Service director J. Earl Coke, state leaders are designated for six Agricultural Extension Service "districts" of 6 to 10 counties each. Statewide leaders are hired for the home economics and 4-H programs. Home demonstration agents become home advisors in the new plan. County directors are named to coordinate local farm and home advisor programs.

Victory Garden poster
Victory Garden poster
1942 - Many women take the lead in the fields while the men are at war...
1942 - Many women take the lead in the fields while the men are at war...
...and in the orchards as well.
...and in the orchards as well.
The Basic Seven food guide
The Basic Seven food guide


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1950 - Specialization: the order of the day

New subject-specific research specialists are hired in range management, ornamental horticulture, subtropical horticulture, plant pathology, vegetable crops, deciduous fruits and nuts, agricultural engineering, marketing, extension education, 4-H, home economics, youth counseling, apiculture, biometrics, climatology, crops processing, forest products, nematology, parasitology, enology, pesticide safety, consumer marketing, wildlife management, public affairs, radio-TV, dairy products, and soil and water salinity.

1951 - Mariposa County joins AES

UC Ag Extension opens a new office to serve Mariposa County.

1952 - UC establishes Division of Ag Sciences

Emphasizing the statewide nature of UC's agricultural program, the regents establish the Division of Agricultural Sciences composed of the statewide College of Agriculture, School of Forestry, School of Veterinary Medicine, Agricultural Experiment Station, Agricultural Extension Service, Citrus Experiment Station, Giannini Foundation of Agricultural Economics and the Kearney Foundation of Soil Science. The agricultural teaching programs on the campuses at Berkeley, Davis, Los Angeles and Riverside will be coordinated by the Division. Harry R. Wellman is named the university's Vice-President - Agricultural Sciences.

1953 - 4-H hires statewide leader

A new statewide 4-H club leader is brought into the Ag Extension network.

1953 - Air pollution–crop damage connection studied

Agricultural Extension Service researchers study possible air pollution damage to various crops in the Los Angeles Basin and the San Francisco Bay Area, looking to establish causality and identify research-based solutions.

1954 - Shade structures protect livestock from excess heat

UC Ag Extension specialists coordinate with USDA researchers to develop new shade structures that will help keep livestock comfortable and healthy in hot weather.

1955 - Ag Extension staffing reaches new high

The staff total reaches 549, more than double the number of workers in 1940.

1956 - Farm advisors, researchers find best tomato varieties

UC Davis scientists working with Agricultural Extension Service farm advisors develop and test tomato varieties around the state, identify three new hybrids with superior yields in California.

1957 - Increased irrigation efficiency

Farm advisors work with farmers to improve irrigation efficiency, applying water based on actual soil and crop needs and reducing runoff and overwatering.

1958 - Protecting bees from pesticide

Following several years of study, UC Extension entomologists release new guidelines for farmers to minimize harm to bees from pesticides.

1959 - Ag economists help state grapple with increased urbanization

Rural-to-urban transition becomes more widespread in the state; UC Ag Extension agricultural economists study challenges and opportunities, seek ways for agriculture to adapt to new realities.

Bell pepper harvest
Bell pepper harvest
Field day
Field day
Tomato harvester
Tomato harvester
Picking tomatoes
Picking tomatoes


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1960 - Drops in number of growers, farmed acres, necessitate increased efficiency

Concerns rise over urban sprawl and the resulting loss of productive farmland. Extension efforts in production agriculture contribute to rapid advances in farm productivity and mechanization.

1960 - New urban programs developed for 4-H

4-H institutes new programs suited to urban, low-income areas. The home economics program is reorganized as "Family and Consumer Sciences" to reflect a shift in emphasis from homemaking skills to science-based education on nutrition, consumer economics and healthy family relationships.

1961 - Biocontrol: nonchemical pest management

UC Extension scientists continue their biocontrol efforts, releasing imported parasitic wasps for control of specific citrus pests, such as California red scale. Their pioneering biocontrol efforts begin to take hold around the state.

1962 - UC pioneers redwood forest conservation measures

Agricultural Experiment Station researchers and Extension specialists study ways to protect the state's redwoods from soil compaction and other types of damage that result from recreation, logging and development activities.

1963 - Advances in rice fertilization

UC farm advisors work with rice growers in Butte, Colusa, Glenn, San Joaquin, Sacramento, Sutter, Yolo and Yuba counties to increase fertilization efficiency.

1964 - 50 years of Extension!

UC Agricultural Extension Service celebrates the 50th anniversary of the Smith-Lever Act. The state boasts 532 specialists and farm and home advisors working in 50 subject areas.

1965 - Dawn of drip irrigation

A Sacramento County based UC farm advisor, working with an Extension irrigation specialist, encourages local container nurseries to switch from their overhead sprinkler irrigation systems to irrigation through plastic tubes, with valves controlled by an electric timer. Modern drip irrigation is established in the state.

1966 - Natural enemy pest control explored for cotton

Extension entomologists and a Fresno County farm advisor study the impact of insecticides on beneficial insects in cotton fields, part of an ongoing UC effort to develop pest management methods that rely on naturally occurring beneficial insects, mites and spiders.

1967 - New disease-resistant pepper varieties

UC farm advisors work with UC Davis Department of Vegetable Crops faculty to develop and test new varieties of peppers that are resistant to tobacco mosaic virus (TMV).

1969 - EFNEP founded

An Expanded Food and Nutrition Education Program (EFNEP) is instituted to reach low-income families.

Food preservation
Food preservation
Preserving marchand waxed peppers
Preserving marchand waxed peppers
Demonstration sign
Demonstration sign
1963 UCCE County Directors Conference
1963 UCCE County Directors Conference


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1970 - Ag Extension recognizes its growing global role

Extension programs begin to take on an international view in response to concerns over the availability of an adequate world food supply.

1970 - Extension recognizes, adapts to changing social concerns

UC Ag Extension establishes programs in community development, farm personnel management, integrated pest management and marine fisheries.

1974 - Reflecting a new, more-inclusive role, Ag Extension becomes UC Cooperative Extension

UC officially recognizes the broadening social and economic purview of the institution and gives the Agricultural Extension Service its new name, UC Cooperative Extension (UCCE).

1977 - Small-scale growers get a new seat at the table

The Small Farm Program is established to focus on specialized needs of small-scale and limited-resource farmers.

1979 - IPM Project

The new Statewide Integrated Pest Management Project accelerates education and research into production alternatives that require less use of pest-control chemicals.

Small Farm Program
Small Farm Program
IPM-Integrated Pest Management
IPM-Integrated Pest Management


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1981 - UC offers information in Spanish

UC creates a communications unit to help UCCE advisors and specialists find ways to better reach and serve Spanish-speaking audiences in California.

1986 - New initiative on oaks, other hardwoods

An Integrated Hardwood Management program is established, and charged with investigating the problems that face oak trees and other California hardwoods.

1987 - UC SAREP

The Sustainable Agriculture Research and Education Program is established to develop alternatives to traditional, high-input agricultural practices.

1988 - UCCE reorganized to emphasize research-campus connection

UCCE is reorganized to make campus-based specialists more integral to campus academic departments. Regional directors are given increased authority to tailor programs to suit regional needs.

1989 - 4-H: so much more now than farming

4-H Club members, aged 9 to 19, number about 76,000 in California. More than 40% of members live in large cities or suburbs, and 55% of them are girls.

SAREP-Sustainable Agricultural Research and Education Program
SAREP-Sustainable Agricultural Research and Education Program
Afterschool 4-H group
Afterschool 4-H group


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1990 - Money Sense program guides families out of poverty

A team of UCCE home economists develops the Money Sense program to help low-income families improve their financial situation.

1991 - Challenges of all kinds: fair trade, water and land use, research funding

UCCE specialists research proposed international fair trade agreements and their potential effects on California-grown commodities. Water- and land-use issues multiply. Research funding shrinks.

1992 - Sweetpotato whitefly study

A team of UCCE experts analyzes the economic impact of sweetpotato whitefly on agriculture in California's Imperial Valley.

1993 - New avenues of outreach for Small Farm Program

In Fresno County, a new workshop series reaches out to post-Vietnam War immigrants from Southeast Asia, an increasing presence in the local small farming community.

1994 - Sustainability trend grows

UCCE scientists document an increasing trend of farmers moving toward more sustainable agricultural practices.

1995 - New, less chemical-intensive options for almonds

Cooperative Extension scientists help almond growers in Merced County reduce their use of chemical pesticides.

1996 - Internet, email bring new extension and research opportunities; radio seen as new avenue to reach Latino clientele

UCCE explores emerging electronic media for new ways to conduct outreach and research. "Already we can use email to exchange messages with our counterparts anywhere in the world, almost instantaneously. Since the World Wide Web and browsers ... became widely available in 1993, we have been able to receive powerful graphics, images, and even videos on home and office computers. Those of us who have installed desktop video cameras can transmit our faces as well as our voices. In just a few years, the equivalent of the Library of Congress will be available on everyone’s desk through the computer," says one observer. UCCE's Spanish language unit begins research on the use of radio for nutrition extension to Spanish-speaking families.

1997 - Just enough water, just where it's needed

In a collaborative publication, UCCE researchers document agriculture's shift from furrow and flood irrigation to the use of sprinklers, microsprinklers and drip systems.

1998 - Dust pollution gets UCCE solution

Windblown dust in Southern California's Antelope Valley becomes an increasing pollution concern. UCCE scientists respond, finding new ways to stabilize the soil and reduce airborne dust.

1999 - Exploring agritourism

A UCCE team looks into the growing field of agritourism. They report significant, specific benefits to farmers and communities in San Diego County and other metropolitan areas.

Learning about sustainable agriculture
Learning about sustainable agriculture
Almond orchard
Almond orchard
Welcome to the age of the Internet
Welcome to the age of the Internet
Microsprinkler-irrigated young citrus trees
Microsprinkler-irrigated young citrus trees
Exploring the benefits of agritourism
Exploring the benefits of agritourism


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2000 - School gardens teach kids good nutrition

UCCE study finds that gardening projects in schools go beyond just teaching students how to till, plant, and weed—they also teach kids healthier eating habits.

2001 - Breakthrough against sudden oak death

After considerable study, a team of UCCE scientists develops an IPM method to deal with sudden oak death, a disease that has killed tens of thousands of oak trees in the state.

2002 - Focus on career readiness for teens

A UCCE study of high school seniors in Northern California shows that state youth need more effective, practical preparation for employment and adult careers.

2003 - Artisanal cheeses: Who buys what?

UCCE researchers look into the shopping habits and views of consumers who buy specialty cheeses, then share their conclusions with California cheese makers so they can develop new promotional and production strategies targeted their market.

2004 - Low income link to increased obesity identified and addressed

A UCCE workgroup uncovers an important link between a lack of food security among low-income Latino families and their increased risk of obesity. New, more effective nutritional education programs are developed in response.

2005 - 40 years of Kearney REC research, education

Kearney Research and Extension Center turns 40, celebrating decades of partnership with UCCE on research and extension education for California agricultural producers.

2006 - In grape harvest, size does matter

A UCCE study shows that using a smaller grape harvest basket makes for healthier farm workers with fewer back problems.

2007 - A rose is a rose, but a bug is a bug

UCCE develops and tests a new IPM approach to managing commercial rose pests. The result is improved business for the largest component of the California cut-flower industry.

2008 - Biocontrol enters the vineyard

Sonoma and Napa county UCCE staff apply biocontrol methods to vineyards, continuing Extension's tradition of cooperation with California producers in making grape growing culture more sustainable.

2009 - Long-term, strategic view

UC ANR, the parent organization of UCCE, adopts a new strategic vision for its work through 2025.

Gardening at school
Gardening at school
"Eat Fit" - nutrition education
Grape harvest
Grape harvest


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2010 - Strategic initiatives help refocus UCCE work

Four of nine newly identified strategic initiatives are underway, addressing sustainable food systems, healthy families and communities, endemic and invasive pests and diseases, and sustainable natural ecosystems.

2010 - UC best practices adopted by nursery industry

A UCCE study finds that Southern California nurseries are using UC-identified best practices to reduce overwatering and irrigation runoff from their facilities.

2011 - Nitrate pollution solutions

In response to concerns over nitrate pollution in California groundwater systems, UCCE promotes known and potential solutions. UCCE advises agriculture on nutrient and irrigation management strategies to control nitrate pollution.

2011 - UC ANR focuses on water research

A fifth strategic initiative addressing Water Quantity, Quality and Security is launched.

2012 - Internal ANR grants program focuses funds on new research

UC ANR funds an internal grants program to support cutting-edge research and extension education efforts, including work in such areas as biofuels and local and regional food systems.

2013 - Global Food Systems Forum

The UC ANR-sponsored Global Food Systems Forum draws attendees from across California, the United States, and beyond. The Forum's rich online presence attracts 1,500 viewers from more than 70 countries.

2014 - 100 years, and plenty more to come!

UC Cooperative Extension celebrates 100 years of putting science and service to work for Californians in local communities.

2016 - European grapevine moth successfully eradicated

European grapevine moth was detected in Napa Valley in 2009. By 2011, the moth had also been found in grapes in nine other counties as far south as Fresno. UC ANR academics responded rapidly—working with public and private partners and international scientists—to develop a pest management program. In 2016, EGVM was declared eradicated from California.

Global Food Systems Forum 2013
Global Food Systems Forum 2013
Celebrating 100 years!
Celebrating 100 years!


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Here's to another 100 years of science and service!

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