High panel exploitation of Hevea trees: a comparative study of five tapping systems Peninsular Malaysia

Ahmad Zahrin, . and Wan C. K., . High panel exploitation of Hevea trees: a comparative study of five tapping systems Peninsular Malaysia. pp. 17-26. ISSN 0126-6128

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 less; 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.

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Abstract

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 less; 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.

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Item Type:	Article
Additional Information:	6 tables; 32 ref. Summary (En Malay)
AGROVOC Term:	HEVEA
AGROVOC Term:	INCISION EN LA CORTEZA
AGROVOC Term:	CONTENIDO DE MATERIA SECA
AGROVOC Term:	MALASIA PENINSULAR/ RENDIMIENTO
AGROVOC Term:	ESTIMULO
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:54
URI:	http://webagris.upm.edu.my/id/eprint/18984

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