High panel exploitation of Hevea trees: a comparative study of five tapping systems
High panel exploitation of Hevea using five different tapping systems was studied. Upward tapping on a quarter-spiral cut for eight months, followed by base panel tapping for four months gave the same yield as downward ladder tapping on a half-spiral cut (control). However, the dry rubber content of...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universiti Pertanian Malaysia
1987
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/2510/1/High_Panel_Exploitation_of_Hevea_Trees.pdf http://psasir.upm.edu.my/id/eprint/2510/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | High panel exploitation of Hevea using five different tapping systems was studied. Upward tapping on a quarter-spiral cut for eight months, followed by base panel tapping for four months gave the same yield as downward ladder tapping on a half-spiral cut (control). However, the dry rubber content of the latex was higher; the time taken to tap per tree was {ess; stimulation cost was lower and
so was bark consumption. The jebong and CUT knife were compared for upward tapping{ on a quarter-spiral cut and showed no differences on the yield of latex, but it took more time to tap a tree with the jebong knife when the tapping cut reached higher levels. In upward tapping, the yield obtained with the half-spiral cut, was higher than the quarter-spiral cut, but the dry rubber content of the latex was lower. Also, it took a longer time to tap the tree; it had a higher bark consumption and the cost of stimulation was higher compared to the quarter-spiral cut. There was little difference in yield between reverse micro-x and ladder tapping. Reverse micro-tapping gave a higher dry rubber content of the latex .and consumed much less bark, but the stimulation cost was higher, and it took a
longer time to tap a tree. |
|---|