Prediction of water‐retention of milled pine bark‐sand potting media from laboratory analyses of individual components

Nash, Mark A.; Pokorny, F. A.

doi:10.1080/00103629209368640

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…Substrate physical properties such as water-holding capacity, particle size distribution, air space, total porosity, and bulk density all have a significant influence on the growth of horticultural crops (Bilderback et al 2005). The ability of a substrate to retain and distribute water influences the necessary irrigation rate and frequency during plant production (Nash and Pokorny 1992). As regulatory efforts focus on water conservation, growers specializing in container plant production must understand how substrate characteristics influence water use.…”

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confidence: 99%

Quantifying the Sorptive Behavior of Traditional Horticultural Substrate Components Based on Initial Hydraulic Conditioning

Bartley

Yap

Jackson

et al. 2023

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The ability of a substrate component (organic or inorganic) to capture and retain water (hydration and wettability) is important to investigate and promote water-use–efficient practices. Many factors may play a role in the wettability of the material, including the processing of the material and its initial handling. The goal of this experiment was to determine the effect of moisture content (MC) on the sorptive behavior of substrates after an initial and secondary hydration cycle. Coir, peat, and aged pine bark were evaluated at a 33%, 50%, and 66% MC by weight. At all moisture levels, coir and bark were minimally affected by MC or the initial hydration cycle. Peat was the most vulnerable to changes in sorptive behavior as a result of wetting and drying cycles. After a wetting and drying cycle, the maximum volumetric water content of peat from surface irrigation was reduced 21.5% (volumetrically), more than three times any other treatment. The hydration efficiency of peat was improved when blended with as little as 15% coir. These experiments provide evidence that MC and initial handling of the substrate can lead to differences in initial water use efficiency.

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confidence: 99%

Quantifying the Sorptive Behavior of Traditional Horticultural Substrate Components Based on Initial Hydraulic Conditioning

Bartley

Yap

Jackson

et al. 2023

horts

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“…development of estimating equations for bulk density (Pokorny et al, 1986), screen analysis (Gibson, 1984), water-release characteristics (Nash, 1989), hydrogen-ion activity (Nash and Pokorny, 1990a) and cation exchange capacity (Nash and Pokorny, 1990b) by which these properties may be estimated for any given volume mixture of individual components (v/v ratios). An integral component of many of these estimating equations is a correction value for shrinkage.…”

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Shrinkage in Ternary Mixes of Container Media

Burés¹,

Pokorny²,

Ware³

1991

Conference on Applied Statistics in Agriculture

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43Based on functional relationships established for binary mixes of container media, a mathematical model is proposed for ternary component mixtures. Shrinkage values are generated for three-component mixtures based on mathematical equations. Empirically observed shrinkage values for corresponding three-component mixtures are determined and used as the basis for assessing the reliability of the proposed mathematical model for characterizing shrinkage in mixtures of container media. . Regression equations were developed and compared for both theoretical and empirical results.

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Inorganic and Synthetic Organic Components of Soilless Culture and Potting Mixtures

et al. 2019

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Prediction of water‐retention of milled pine bark‐sand potting media from laboratory analyses of individual components

Cited by 6 publications

References 13 publications

Quantifying the Sorptive Behavior of Traditional Horticultural Substrate Components Based on Initial Hydraulic Conditioning

Quantifying the Sorptive Behavior of Traditional Horticultural Substrate Components Based on Initial Hydraulic Conditioning

Shrinkage in Ternary Mixes of Container Media

Inorganic and Synthetic Organic Components of Soilless Culture and Potting Mixtures

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