Soil nitrate level best measure of ryegrass nitrogen needs in Imperial Valley
AuthorsRobert W. Hagemann
Carl F. Ehlig
Richard Y. Reynoso
Authors AffiliationsRobert W. Hagemann is Farm Advisor, University of California Cooperative Extension, Imperial County; Carl F. Ehlig is Plant Physiologist and Agricultural Research Technician, respectively, USDA, ARS, Brawley, California; Richard Reynoso is Plant Physiologist and Agricultural Research Technician, respectively, USDA, ARS, Brawley, California.
Hilgardia 38(1):24-25. DOI:10.3733/ca.v038n01p24. January 1984.
Not available – first paragraph follows:
Annual ryegrass produces superior yields of hay or pasturage with excellent palatability, a protein content above 20 percent, and other desirable qualities. The new fertilizer technology provides a highly favorable economic return. However, the nitrogen fertilization rates required for highest yields may cause plant nitrate-nitrogen concentrations that are toxic to livestock.
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