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Traditional and chemical techniques for stimulation of shorea javanica (Dipterocarpaceae) resin exudation in Sumatra

Les techniques traditionelles et chimiques pour la stimulation de la exsudation de résine de l’arbre Shorea javanica (Dipterocarpaceae) en Sumatra

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Abstract

Resin tappers in Sumatra induce resin flow in Shorea javanica by first opening vertical rows of small (3 cm) holes in the tree trunk. After 6–12 mo, larger (10–15 cm) holes are opened between the rows of small holes for resin harvest. Informants reported that opium applied to trees increased resin yields. Application of 10% 2-chloroethylphosphonic acid to artificial trunk wounds ofS. javanica production trees increased resin yields by 110% relative to controls in 72-h trials. Wounds of previously untapped trees exuded no resin in response to the same treatment.

Résumé

Les préleveurs de résine de Sumatra provoquent l’écoulement de la résine du Shorea javanica en pratiquant, d’abord, des rangées verticales de petits trous (3 cm) dans le tronc de l’arbre. Après 6 à 12 mois, des trous plus grands (10–15 cm) sont pratiqués, entre les rangées de petits trous, pour la récolte de la résine. Les informateurs ont noté que l’application d’opium aux arbres augmentait les rendements en résine. L’application d’acide 2-chloroéthylphosophonique à 10% aux plaies artificielles aux tronc d’arbres S. javanica de production augmentait les rendements en résine de 110% par rapport aux témoins dans les essais de 72 heures. Les plaies d’arbres non antérieurement saignés n ’ont pas exsudé de résine en réponse au même traitement.

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Messer, A.C. Traditional and chemical techniques for stimulation of shorea javanica (Dipterocarpaceae) resin exudation in Sumatra. Econ Bot 44, 463–469 (1990). https://doi.org/10.1007/BF02859782

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  • DOI: https://doi.org/10.1007/BF02859782

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