Abstract
Growth of Ravenea rivularis Jumelle and Perrier (majesty palm) and `Lady Jane' Anthurium Schott was compared in container media, using as a primary organic component sphagnum peat, sedge peat, or coir dust. Growth index and shoot and root dry weights of majesty palm were significantly higher in the coir than the sedge peat medium. Growth index and shoot dry weight were only marginally higher for the anthurium in the coir vs. sedge peat medium, and root dry weights were comparable. Both crops grew equally well in the coir and the sphagnum peat medium. The sedge peat medium had the most air porosity and the least water-holding capacity of the three media at the initiation of the trials, but at termination showed a reversal of these parameters. The coir medium showed the least change in these parameters over 8 months. High-quality coir dust appears to be an acceptable substitute for sphagnum or sedge peat in soilless container media.
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