Author
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MURPHY, A - Auburn University |
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GILLIAM, C - Auburn University |
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FAIN, G - Auburn University |
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Torbert Iii, Henry |
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GALLAGHER, T - Auburn University |
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SIBLEY, J - Auburn University |
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MARBLE, S - Auburn University |
Submitted to: Southern Nursery Association Proceedings
Publication Type: Proceedings Publication Acceptance Date: 1/10/2009 Publication Date: 1/10/2009 Citation: Murphy, A., Gilliam, C.H., Fain, G.B., Torbert III, H.A., Gallagher, T.V., Sibley, J.L., Marble, S.C. 2009. Amending pine bark with alternative substrates. Southern Nursery Association Proceedings. 54:186-190. Interpretive Summary: Due to a number of factors, pine bark supplies have significantly decreased over the past few years. While alternative substrates are being evaluated, many growers are asking if these alternative substrates can be used to stretch existing PB supplies. In this study, two alternative substrates, “Clean Chip Residue” and “WholeTree” were evaluated in varying ratios with pine bark to determine their effect on the growth of five different nursery crops. Both of these alternative substrates contain higher wood content than pine bark alone. The data showed that with most species, nursery producers could amend their pine bark with up to 75% WholeTree or 75% Clean Chip Residual with limited impact on crop growth. This process will also allow nursery producers the opportunity to become comfortable with alternative substrates before switching completely to 100% alternative substrates. Technical Abstract: Due to a number of factors, pine bark supplies have significantly decreased over the past few years. While alternative substrates are being evaluated, many growers are asking if these alternative substrates can be used to stretch existing PB supplies. In this study, two alternative substrates, “Clean Chip Residue” and “WholeTree” were evaluated in varying ratios with pine bark to determine their effect on the growth of five different nursery crops. Both of these alternative substrates contain higher wood content than pine bark alone. The data showed that with most species, nursery producers could amend their pine bark with up to 75% WholeTree or 75% Clean Chip Residual with limited impact on crop growth. This process will also allow nursery producers the opportunity to become comfortable with alternative substrates before switching completely to 100% alternative substrates. |