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


Citation

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

Abstract / Synopsis

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.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Publisher: Universiti Pertanian Malaysia
Keywords: Hevea tree; High panel; Tapping and tapping systems; Yield; Stimulation; Ethephon jebong; CUT knife; Dry rubber content; Task size; Bark consumption
Depositing User: Nur Izyan Mohd Zaki
Date Deposited: 16 Nov 2009 08:37
Last Modified: 19 Oct 2018 10:44
URI: http://psasir.upm.edu.my/id/eprint/2510
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