Nitrogen fertilization of rice in California
AuthorsD. S. Mikkelsen
M. D. Miller
Authors AffiliationsD. S. Mikkelsen is Professor of Agronomy and Agronomist in the Experiment Station, University of California, Davis; M. D. Miller is Extension Agronomist, University of California, Davis.
Hilgardia 17(8):9-11. DOI:10.3733/ca.v017n08p9. August 1963.
Japonica rice is grown in the Central Valley of California primarily on dense clay soils under continuous flooding. Nitrogen is usually insufficient in these soils for optimum rice production, and nitrogen fertilization increases average yields about 40%. In some instances, nitrogen and phosphorus together are essential for optimum yields. Potash and other nutrient elements are usually adequate.
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