UC Cooperative Extension | Agricultural Experiment Station

Green Hall of Famer Oki retires after 29-year UC career

Loren Oki (center) with his daughter, Sebrienne (left), and wife, Cynthia (right), at the Green Industry Hall of Fame Award Ceremony in Fall 2023. Photo courtesy of Loren Oki.

UCCE specialist's research prevents water pollution, reduces water use When interviewed to become a University of California Cooperative Extension specialist in environmental horticulture, Lorence “Loren” Oki was asked what kind of...

UC Delivers

Questions about water and fertilizer use efficiency are major economic and environmental issues for California agriculture. Excess nitrate is an important concern for San Joaquin Valley communities that depend on groundwater for drinking. Vegetable crops such as carrots, onions and potatoes typically require high amounts of nitrogen fertilizer and frequent irrigation, usually by sprinkler. Although sprinkler lateral spacings vary from 30 to 50 feet, no season-long field study had determined the impact of these different spacings on efficiency of water and nitrogen use.

Read about: 3 Year Study Examines Most Efficient Sprinkler Spacing | View Other Stories

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