University of California

Range fertilization in the Sierra Nevada foothills


Charles A. Raguse
John L. Hull
Milton B. Jones
James G. Morris
Melvin R. George
Kent D. Olson

Authors Affiliations

Charles A. Raguse is Professor and Agronomist, Department of Agronomy and Range Science University of California, Davis; John L. Hull is Specialist, Department of Animal Science University of California, Davis; Milton B. Jones is Agronomist, Department of Agronomy and Range Science and the UC Hopland Field Station University of California, Davis; James G. Morris is Professor and Nutritionist, Departments of Animal Science and Physiological Science University of California, Davis; Melvin R. George is Agronomist, Cooperative Extension University of California, Davis; Kent D. Olson is Economist, Cooperative Extension, Agricultural Economics. University of California, Davis.

Publication Information

Hilgardia 38(5):4-6. DOI:10.3733/ca.v038n05p4. May 1984.

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Following a year of preliminary experiments, a long-term, field-scale foothill range fertilization study began in 1982 with a series of precise applications to 385 acres of foothill rangeland comprising 12 fields on Forbes Hill at the University of California Sierra Foothill Range Field Station, Browns Valley. Because deficiencies of three major elements — nitrogen, phosphorus, and sulfur — limit production on soils of the region, we established the study to compare nitrogen alone, phosphorus plus sulfur, and combinations of the three elements. Since results from these treatments could be expected to differ from each other over time (irrespective of level of nutrient applied) it was essential to initiate treatments simultaneously, so that comparisons could be made within the same weather years.

Raguse C, Hull J, Jones M, Morris J, George M, Olson K. 1984. Range fertilization in the Sierra Nevada foothills. Hilgardia 38(5):4-6. DOI:10.3733/ca.v038n05p4
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