Shrinkage of Selected Two-component Container Media

  • Nash M
  • Pokorny F
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Abstract

Component and particle-size effects on shrinkage of two-component potting media were determined. Milled pine bark-sand mixtures were used to determine particle-size effects on shrinkage. Shrinkage curves formed an inverted V with maximum shrinkage at the 1:1 (v/v) ratio. No shrinkage occurred when bark was mixed with bark or sand with sand. Shrinkage increased linearly in the range of 0% to 50% bark and decreased linearly in the range of 50% to 100% bark. Each half of the shrinkage curve was a mirror image of the other half. Shrinkage curves for peat-sand and peat-perlite were similar in form to that of bark-sand media.

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Nash, M. A., & Pokorny, F. A. (2019). Shrinkage of Selected Two-component Container Media. HortScience, 25(8), 930–931. https://doi.org/10.21273/hortsci.25.8.930

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