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This article in AJ

  1. Vol. 60 No. 4, p. 633-634
     
    Received: Dec 20, 1967
    Published: July, 1968


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doi:10.2134/agronj1968.00021962006000040009x

Effect of Nitrogen Fertilizer on Yield, Nitrogen Content, and Yield Components of Safflower

  1. J. P. Jones and
  2. T. C. Tucker2

Abstract

Abstract

Nitrogen fertilization produced large increases in safflower seed yield when amply irrigated, a lesser effect with moderate irrigation, and none where irrigation was severly restricted.

Total nitrogen in above ground plant portions increased with N fertilization rate, doubling from first bloom to maturity at all N rates. Percentage recovery decreased as applied N rates increased.

Nitrogen fertilization increased safflower seed yield with more heads in the tertiary position and increased weight per head in the secondary and tertiary position. Increased head weight resulted from increased weight per seed in secondary head position and increased number of seeds per head in the tertiary position.

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