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This article in AJ

  1. Vol. 55 No. 3, p. 254-257
    Received: Sept 18, 1962

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Yield, Percent Nitrogen, and Total Nitrogen Uptake of Various California Annual Grassland Species Fertilized with Increasing Rates of Nitrogen1

  1. Milton B. Jones2



Near maximum yields resulted where 80 pounds N per acre were applied, but carryover was measurable only where 160 pounds were used. In nonleguminous plants, percent N increased with N rates during the vegetative stage, but at maturity it was less where 40 pounds N were applied than in the control. N uptake increased with N rate during winter, but uptake on unfertilized plots during the spring approximated that on plots receiving 40 pounds of N.

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