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This article in AJ

  1. Vol. 60 No. 5, p. 571-576
     
    Received: Mar 1, 1967


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doi:10.2134/agronj1968.00021962006000050039x

A Linear Program for Determining Nutrient Culture Mixtures1

  1. D. R. Jensen and
  2. Paul Sutton2

Abstract

Abstract

Procedures are given for determining the quantities of compounds to be used in preparing nutrient cultures which satisfy the requirements of quantitative plant nutrition experiments. In the example discussed the concentrations of N(as NH+4), P, and N(as NO3) are specified exactly, while minimum concentrations are given for K and Mg. From a set of compounds containing the requisite nutrient elements, a recipe is obtained which satisfies the requirements while minimizing concentrations of Na and Cl. This formulation is achieved by an iterative procedure called linear programming which utilizes a tabular solution to the problem.

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