Density and Age Affect Performance of Containerized Loblolly Pine Seedlings
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چکیده
Loblolly pine seedlings were grown in 1 x 5 inch biodegradable plastic tubes for 10, 12, and 14 weeks at densities of 42, 84, 126, and 168 per square foot. Seedling density and age significantly affected seedling development at time of outplant ing, and densi ty became more important as greenhouse growing t imes increased. Al l morphological characteristics measured when seedlings were planted-height, diameters, root and shoot dry weights, and proportion of seedlings with secondary needles-were correlated signif icant ly with f ield survival, height, and growth. Stem dry weights were most c losely related to f ie ld performance. Best seedling development and performance were obtained at the lowest seedling density. Additional keywords: Pinus taeda, seedling development, seedl ing surv ival , seedl ing physiology, seedling morphology.
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