The Agricultural Extension Service at the University of California (UC) was established in Humboldt County in 1913 preceding the nationwide establishment of the extension service in 1914.

Improving rangelands by controlling weeds and brush, seeding, fertilization, and grazing management has been a continuing theme of research by UC since the late 1800s.

Restoration of annual-dominated grasslands with native perennials has been a recurring research theme that continues to challenge grassland researchers.

The complexity of research questions and education programs increased when environmental issues including grazing effects on riparian areas, oak regeneration, wildlife habitat, and water quality began to influence range research and extension programs in the 1980s.

A more diversified range extension audience evolved with the increase in small farms and ranches and diversification of agency staff in response to affirmative action.