Effect of drying conditions on viability of common birch, black alder, Scots pine and Norway spruce seeds
Research has been undertaken aimed at determining the admissible minimal water content levels to which seeds of common birch, black alder, Scots pine and Norway spruce can be dried without losing viability. Three methods of seed drying were used: I – partially water-free air drying, II – lyophilisation and III – hot air drying. However for practical reasons the seeds of these species can be dried up to 3.5% moisture content at the temperature not exceeding 50°C.
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