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  • Author or Editor: Christopher J. Luley x
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A 2-year study was conducted in southwest Florida to evaluate the effects of quick vs. slow-release nitrogen sources commonly used in landscapes on wound closure in live oak [Quercus virginiana (Mill.)]. Fertilized trees displayed nonsignificant shoot growth and leaf color when compared to nonfertilized ones. Neither fertilizer type, nor rate of application appeared to affect wound closure rates over the two year measurement period. This study showed increased replication will be needed when studying landscape trees, since trends in known primary growth response to fertilization were present but were not statistically significant. Fertilization effects on secondary growth including diameter increase and wound closure rate, were correspondingly not significant. Secondary growth responses may be difficult to demonstrate in live oak when using landscape trees especially at lower nitrogen rates currently being recommended in the industry.

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