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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Universiti Pertanian Malaysia
1987
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| Online Access: | http://psasir.upm.edu.my/id/eprint/2510/1/High_Panel_Exploitation_of_Hevea_Trees.pdf |
| _version_ | 1796966318616870912 |
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| author | Zahrin, Ahmad Wan, C. K. |
| author_facet | Zahrin, Ahmad Wan, C. K. |
| author_sort | Zahrin, Ahmad |
| collection | UPM |
| description | 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. |
| first_indexed | 2024-03-06T06:58:23Z |
| format | Article |
| id | upm.eprints-2510 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T06:58:23Z |
| publishDate | 1987 |
| publisher | Universiti Pertanian Malaysia |
| record_format | dspace |
| spelling | upm.eprints-25102018-10-19T02:44:47Z http://psasir.upm.edu.my/id/eprint/2510/ High panel exploitation of Hevea trees: a comparative study of five tapping systems Zahrin, Ahmad Wan, C. K. 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. Universiti Pertanian Malaysia 1987 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/2510/1/High_Panel_Exploitation_of_Hevea_Trees.pdf Zahrin, Ahmad and Wan, C. K. (1987) High panel exploitation of Hevea trees: a comparative study of five tapping systems. Pertanika, 10 (1). pp. 17-26. ISSN 0126-6128 |
| spellingShingle | Zahrin, Ahmad Wan, C. K. High panel exploitation of Hevea trees: a comparative study of five tapping systems |
| title | High panel exploitation of Hevea trees: a comparative study of five tapping systems |
| title_full | High panel exploitation of Hevea trees: a comparative study of five tapping systems |
| title_fullStr | High panel exploitation of Hevea trees: a comparative study of five tapping systems |
| title_full_unstemmed | High panel exploitation of Hevea trees: a comparative study of five tapping systems |
| title_short | High panel exploitation of Hevea trees: a comparative study of five tapping systems |
| title_sort | high panel exploitation of hevea trees a comparative study of five tapping systems |
| url | http://psasir.upm.edu.my/id/eprint/2510/1/High_Panel_Exploitation_of_Hevea_Trees.pdf |
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