Measurement of hydraulic properties of growing media with the HYPROP system
Knowledge of hydro-physical properties is an essential prerequisite for assessing the suitability and quality of growing media. The method used for sample preparation is important for the measurement results. Three different sample preparation methods were compared. The methods differed in terms of...
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| Format: | Article |
| Language: | English |
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Serbian Soil Science Society, Belgrade
2022-01-01
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| Series: | Zemljište i biljka |
| Subjects: | |
| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/0514-6658/2022/0514-66582201040S.pdf |
| _version_ | 1797976611003301888 |
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| author | Schindler Uwe Thielicke Matthias Saljnikov Elmira Zivotić Ljubomir Eulenstein Frank |
| author_facet | Schindler Uwe Thielicke Matthias Saljnikov Elmira Zivotić Ljubomir Eulenstein Frank |
| author_sort | Schindler Uwe |
| collection | DOAJ |
| description | Knowledge of hydro-physical properties is an essential prerequisite for assessing the suitability and quality of growing media. The method used for sample preparation is important for the measurement results. Three different sample preparation methods were compared. The methods differed in terms of the way the 250°cm3 steel cylinder was filled and the height of preloading. Measurements on loosely filled cylinders were included. The comparison was carried out on 15 growing media using the HYPROP device. HYPROP enables a complex analysis of the hydro-physical properties with high accuracy and reproducibility. The water retention curve, the unsaturated hydraulic conductivity function, the dry bulk density, the shrinkage and the rewetting properties can be measured simultaneously. The air capacity and the amount of plant-available water in pots depend on the height of the pot. In the field, it is related to the field capacity. The quality assessment was carried out both for flowerpots of different height and for field conditions with free drainage. Loosely filled samples consolidated hydraulically shortly after the start of the measurement. These geometric changes can be taken into account with the HYPROP. The sample preparation method - preloading or loose filling - yielded significantly different results for the pore volume, dry bulk density, plant available water and air capacity. The total pore volume of the loosely filled cylinders varied between 86.8 and 95.2°% by vol. (preloaded 81.3 and 87.7°% by vol.). The most critical factor was the air capacity. Loosely filled substrate samples achieved the highest air capacities, but also did not reach the critical value of 10°% by volume in shallow flowerpots, e.g. in 10 cm pots with 5.8°% by volume. The sample preparation method, measurement and quality assessment of the hydro-physical properties of growing media should be adapted to the conditions of use - whether they are used in a field with free drainage or in pots or containers in greenhouses. |
| first_indexed | 2024-04-11T04:53:40Z |
| format | Article |
| id | doaj.art-c61cd72bb0c24ab6b5441d0f88e5e86c |
| institution | Directory Open Access Journal |
| issn | 0514-6658 2560-4279 |
| language | English |
| last_indexed | 2024-04-11T04:53:40Z |
| publishDate | 2022-01-01 |
| publisher | Serbian Soil Science Society, Belgrade |
| record_format | Article |
| series | Zemljište i biljka |
| spelling | doaj.art-c61cd72bb0c24ab6b5441d0f88e5e86c2022-12-26T22:49:11ZengSerbian Soil Science Society, BelgradeZemljište i biljka0514-66582560-42792022-01-01711405210.5937/ZemBilj2201040S0514-66582201040SMeasurement of hydraulic properties of growing media with the HYPROP systemSchindler Uwe0Thielicke Matthias1Saljnikov Elmira2https://orcid.org/0000-0002-6497-2066Zivotić Ljubomir3https://orcid.org/0000-0003-3524-6214Eulenstein Frank4Mitscherlich Academy for Soil Fertility, Paulinenaue, GermanyMitscherlich Academy for Soil Fertility, Paulinenaue, GermanyInstitute of Soil Science, Belgrade, SerbiaUniversity of Belgrade, Faculty of Agriculture, Belgrade-Zemun, SerbiaMitscherlich Academy for Soil Fertility, Paulinenaue, GermanyKnowledge of hydro-physical properties is an essential prerequisite for assessing the suitability and quality of growing media. The method used for sample preparation is important for the measurement results. Three different sample preparation methods were compared. The methods differed in terms of the way the 250°cm3 steel cylinder was filled and the height of preloading. Measurements on loosely filled cylinders were included. The comparison was carried out on 15 growing media using the HYPROP device. HYPROP enables a complex analysis of the hydro-physical properties with high accuracy and reproducibility. The water retention curve, the unsaturated hydraulic conductivity function, the dry bulk density, the shrinkage and the rewetting properties can be measured simultaneously. The air capacity and the amount of plant-available water in pots depend on the height of the pot. In the field, it is related to the field capacity. The quality assessment was carried out both for flowerpots of different height and for field conditions with free drainage. Loosely filled samples consolidated hydraulically shortly after the start of the measurement. These geometric changes can be taken into account with the HYPROP. The sample preparation method - preloading or loose filling - yielded significantly different results for the pore volume, dry bulk density, plant available water and air capacity. The total pore volume of the loosely filled cylinders varied between 86.8 and 95.2°% by vol. (preloaded 81.3 and 87.7°% by vol.). The most critical factor was the air capacity. Loosely filled substrate samples achieved the highest air capacities, but also did not reach the critical value of 10°% by volume in shallow flowerpots, e.g. in 10 cm pots with 5.8°% by volume. The sample preparation method, measurement and quality assessment of the hydro-physical properties of growing media should be adapted to the conditions of use - whether they are used in a field with free drainage or in pots or containers in greenhouses.https://scindeks-clanci.ceon.rs/data/pdf/0514-6658/2022/0514-66582201040S.pdfsample preparationwater retention curveunsaturated hydraulic conductivity functionextended evaporation method (eem)hyprop |
| spellingShingle | Schindler Uwe Thielicke Matthias Saljnikov Elmira Zivotić Ljubomir Eulenstein Frank Measurement of hydraulic properties of growing media with the HYPROP system Zemljište i biljka sample preparation water retention curve unsaturated hydraulic conductivity function extended evaporation method (eem) hyprop |
| title | Measurement of hydraulic properties of growing media with the HYPROP system |
| title_full | Measurement of hydraulic properties of growing media with the HYPROP system |
| title_fullStr | Measurement of hydraulic properties of growing media with the HYPROP system |
| title_full_unstemmed | Measurement of hydraulic properties of growing media with the HYPROP system |
| title_short | Measurement of hydraulic properties of growing media with the HYPROP system |
| title_sort | measurement of hydraulic properties of growing media with the hyprop system |
| topic | sample preparation water retention curve unsaturated hydraulic conductivity function extended evaporation method (eem) hyprop |
| url | https://scindeks-clanci.ceon.rs/data/pdf/0514-6658/2022/0514-66582201040S.pdf |
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