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Substratum for soil-free cultivation



Substratum for soil-free cultivation



United States Patent (US 4,769,277): 8



A substratum for soil-free cultivation is formed of a mineral fiber felt whose by-volume mass is < 50 kgm-3. The average diameter of the fibers is < 8 micrometers. At least one surface of the substratum is covered with a water-proof sheet.

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Accession: 001959561

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