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This article in AJ

  1. Vol. 73 No. 5, p. 830-832
     
    Received: Sept 8, 1980
    Published: Sept, 1981


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doi:10.2134/agronj1981.00021962007300050020x

Salt Tolerance of Australian Channel Millet1

  1. M. C. Shannon,
  2. E. L. Wheeler and
  3. R. M. Saunders

Abstract

Abstract

Undomesticated plant species may be a valuable resource for increasing crop diversity and developing crops for use in semiarid and saline areas. Australian channel millet (Echinochloa turnerana (Domin) J. M. Black) is very drought tolerant; however, its salt tolerance has not been tested. In drum culture studies, conducted in the greenhouse, plant height, weight, and seed grain weight were measured as a function of saline stress. Concentrations of Na, Ca, and Cl in leaves and stems increased as soil salinity increased. At salinities above 1.5 S m−1, E. turnerana is as salt tolerant as bermudagrass (Cynodon dactylon L.). The grain yield by E. turnerana was decreased by 50% by 2.4 S m−1 salinity; whereas, previous studies have shown that proportionate grain yield reductions of sorghum [Sorghum bicolor (L.) Moench] and barley (Hordeum vulgare L.) occur at 1.1 and 1.8 S m−1, respectively. E. Turnerana has high salt tolerance as either a grain or forage crop, and as a forage displays superior digestibility. This species could be exploited for future use on marginal lands.

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