Abstract
Abstract Young Phoenix roebelenii O’Brian palms (2–3 leaves) and older seedlings (6–9 leaves) were potted in Mott’s amended medium and grown for 42 and 20 weeks, respectively. Three rates of 18N–2.6P–10K Osmocote, 25N–3.9P–14K Peter’s soluble and Osmocote plus Peter’s soluble fertilizer were used as treatments. Controls were potted but not fertilized. All were greenhouse grown at temperatures varying between 18° to 46°C. Fertilizer types or rates had no significant effect on leaf length or dry weight. High rates of Osmocote, and, in some instances, middle to high rates of fertilizer combinations, increased leaf number significantly. Plants receiving all rates of fertilizer appeared larger and produced significantly more leaves than unfertilized plants.
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