Propagation of valuable tree of eha (Castanopsis buruana Miq.) using stem cutting

Abstract

Eha (Castanopsis buruana Miq.) is an endemic and valuable species of the Castanopsis genus that can produce wood and the source of food. However, C. buruana has many constraints in its growth and development, such as limited seed production due to the plants are producing seeds very rarely, just one time in every two or three years. Another thing is C. buruana also has low seeds germination because of the hard and thick seeds coat. In order to increase the plant population, it is very important to do species propagation with vegetative propagation methods by using stem cuttings. Therefore, this study aimed to get information about vegetative propagation of C. buruana and determine the success of vegetative propagation C. buruana using stem cuttings influenced by the application of rootone-F. The research was designed using a completely randomized design consisting of 5 (five) treatments, namely no rootone-F (control), rootone F 100 ppm, 200 ppm, 300 ppm, and 400 ppm. Each treatment was repeated 4 (four) times, and each replication consisted of 5 (five) plants so that there was a total of 100 experimental units. The media used was a combination of sand: soil: rice husk charcoal (1: 1: 1 v/v/v). Thus, the variables used to determine C. buruana stem cuttings success were live percentage, sprouting percentage, number of leaves, rooted cuttings, number of roots, length of roots, and rooted days. The data were analyzed using the F test (Analysis of Variance). If the treatments had a significant effect, then it would be followed by the Duncan test with the 95% confidence level. The results showed that the application of rootone F had no significant effect on all tested variables. Nevertheless, the graph trend showed that some variables gave the differences between rootone F treatments and control. At the end of the research, the stem cuttings had not produced roots yet.