Cyclic Irrigation Improves Irrigation Application Efficiency and Growth of Sawtooth Oak
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Glenn B. Fain, Ken M. Tilt, Charles H. Gilliam, Harry G. Ponder, and Jeff L. Sibley
Abstract: Two studies were conducted to evaluate different irrigation regimes for production of container-grown sawtooth oak. Three irrigation treatments (single, 3 times daily, and 6 times daily) and 2 substrate treatments (100% pinebark and 4:1 (v:v) pinebarkxoir) were evaluated to determine their effects on irrigation application efficiency and growth of sawtooth oak (Quercus acutissima Carruthers) in a pot-in-pot production system. Irrigation application efficiency increased with cyclic treatments compared to a single application and was increased with the pinebark: coir substrate compared to pinebark alone in the single application treatment. Growth was greater when irrigation was applied in 6 cycles than in 1 single application. Trees grown in pinebark: coir substrate were larger than those grown in the pinebark substrate.
Keywords: Pot-in-pot; container production; substrate; coconut coir.
https://doi.org/10.48044/jauf.1999.029
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