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According to this recommendation, to assess the Water Retainer effect on soil water retention curve, the analysis was made for 4 different scenarios: a) Without Water Retainer b)\u00a01dose of Water Retainer c)\u00a03 doses of Water Retainer, d) 5 doses of Water Retainer.\u00a0Doses of Water Retainer were planned with respect to a Three-level full factorial design, for a best statistical distribution. Soil samples were analysed in 2 experimental setups: a) 72 samples (4 scenarios * 3 soil samples * 6 repetitions) in 100 cm3 cylinder (20cm2 surface) for Sandbox pF Determination Machine from Eijkelkamp b)\u00a036 samples (4 scenarios * 3 soil samples * 3 repetitions) in 250cm3 (50cm2 surface) cylinders for Hyprop 2.</span></p>", "keywords": ["Water Retainer; Water Retention curve", "Water Retainer", " krzywa retencji glebowej"], "contacts": [{"organization": "Glogowski, Arkadiusz, Galka, Bernard, Fialkiewicz, Wieslaw,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.17151845"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.17151845", "name": "item", "description": "10.5281/zenodo.17151845", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.17151845"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-04-29T00:00:00Z"}}, {"id": "05effe01-bbaa-428d-8824-5d82e6b046b7", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[14.12, 48.99], [14.12, 54.84], [24.14, 54.84], [24.14, 48.99], [14.12, 48.99]]]}, "properties": {"updated": "2025-05-07T12:31:05.766Z", "language": "eng", "title": "Geoportal Lower Silesia", "description": "A Geoportal that regional database with soil properties and contamination. 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