Influence of nitrogen, photoperiod, cutting type, and clone on root and shoot development of rooted stem cuttings of sweetgum

摘要: This study was designed to test the effects of nitrogen fertilization, photoperiod, cutting type, and clone on root shoot development stem cuttings sweetgum (Liquidambar styraciflua). Differences in growth roots shoots were observed as a result weekly applications varying levels (N) fertilization (0, 25, 50, 100, or 200 mg N/liter). As concentration N increased, new-shoot dry weight but decreased at rates greater than 50 N/liter. The percentage rooted surviving also concentrations increased past A night-interruption light treatment did not significantly affect survival percentages amount growth. Across all treatments, only 46% produced within 15-week period following rooting. Cutting type (terminal sub-terminal) affected development. higher terminal survived deemed plantable. In contrast, sub-terminal more among clones for traits measured.