Rooting stem cuttings of Atlantic white cedar outdoors in containers.

摘要

Stem cuttings of Atlantic white cedar (Chamaecyparis thyoides) were collected in early June 1995, divided into two parts (distal tip and proximal segment), and rooted for 12 weeks in shaded containers outdoors at Goldsboro, North Carolina. Total rooting was near 80%. Mist intervals of 8 and 15 min yielded the best rooting percentages and the least dieback and injury. Two rooting media were tested, with similar results. Rooting was slightly higher in Spencer-Lemaire Rootrainers (Hillson size), compared with in RoPak Multi-pots (45). More than 90% of the tips rooted, even without IBA treatment. Auxin treatment improved rooting of stem segments, but the difference between IBA at 1.5 and 3.0 g/litre was small. Yield of cuttings suitable for transplanting or potting was 80% for tips and 58% for segments.