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Abstract

 

This article in AJ

  1. Vol. 56 No. 3, p. 262-265
     
    Received: Oct 11, 1963


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doi:10.2134/agronj1964.00021962005600030004x

Available Zinc Status of Wisconsin Soils as Determined by Aspergillus niger1

  1. D. C. Mattens,
  2. G. Chesters and
  3. J. T. Murdock2

Synopsis

Synopsis

The method involves buffering the test system with oxalic acid to suppress growth of contaminating microorganisms; an incubation period of 8 days at 30° C. is recommended. From statistical analyses the A. niger assay can be used to predict satisfactorily the uptake of Zn by plants particularly if the effects of pH and clay content of the soil are taken into account when making the prediction.

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