Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 525383
Title Het tapsysteem bij Hevea brasiliensis op experimenteelen grondslag
Author(s) Maas, J.G.J.A.
Source University. Promotor(en): W.K.J. Roepke. - Amsterdam : Bussy - 202
Publication type Dissertation, internally prepared
Publication year 1924
Keyword(s) tappen (rubber) - hevea - sumatra - nederlands indië - tapping - netherlands east indies
Categories Exudate Producing Crops
Abstract The history of the rubber culture and the historical development of tapping systems in South America and Asia were discussed. The tapping systems were then analysed for many factors: the influence of number, length, direction, inclination, depth, height from the ground and consecutive position of tapping faces on the latex production. Also the influence of cutting hour, cutting frequency and rest periods was studied. The influence of the amount of bark cut on yield and the influence of the age of the bark on the regeneration process were considered. The influence of external factors on diameter and number of latex vessels in the bark was also studied.

The choice of a tapping system was considered from an economic aspect. An analysis was made of cost price and tapping labour. Suggestions were advanced to change the tapping system on the ground of this labour analysis.

At that time the trend of development of the tapping systems was still towards less damage to bark. Economic considerations had little influence on the choice of tapping system. But sometimes less frequent cutting was more profitable, even more so on occasion by larger cuts.

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