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Agronomy Journal Abstract -

Phosphorus Nutrition of Italian Ryegrass Relative to Growth, Moisture Content, and Mineral Constituents1

 

This article in AJ

  1. Vol. 57 No. 5, p. 505-508
     
    Received: Feb 25, 1965


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doi:10.2134/agronj1965.00021962005700050032x
  1. L. O. Hylton Jr.2,
  2. A. Ulrich3,
  3. D. R. Cornelius2 and
  4. K. Okhi3

Synopsis

Synopsis

Plant growth and the absorption of P by Italian ryegrass from nutrient solution was affected by P supply, whereas the distribution and accumulation of P within the ryegrass was largely determined by the kind of, and age of, tissue sampled. Blade 1, the youngest blade that was fully open and had a ligule, and H2PO4-P were selected, from 6 plant parts sampled and 2 forms of P determined, as the best combination to diagnose the P status of Italian ryegrass. About 750 ppm of H2PO4-P in blade 1 tissue was tentatively set as the critical concentration for growth of the ryegrass.

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