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Add  Tapping panel dryness in Indonesia
Authors: Lukman
Date: 20050104 | 20050104 | | 1989 | | | | | | |
Subject: PRRIM
Type: Article
Identifier: vital1:29428
Description: Tapping panel dryness is caused by brown bast and bark necrosis. Brown bast is a physiological disease while bark necrosis is caused by fungus.Tapping panel dryness in Indonesia is reported in commerc… More
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Add  Influence of stimulation, tappin system and manuring on yield of Hevea in North Sumatra.
Authors: Lukman | Van Brandt, HJG
Date: 20030923 | 20030923 | | 1975 | | | | | | |
Subject: External/Others
Type: Article
Identifier: vital1:25395
Description: As a basis for the formulation of general recommendations for stimulation of Hevea in North Sumatra, experiments were conducted to study the interactions of Ethrel (10% a.i.) applications with length … More
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Add  Revised international notation for exploitation systems: special communication.
Authors: Lukman
Date: 20030923 | 20050822 | | 1983 | | | | | | |
Subject: PRRIM | -
Type: Article
Identifier: vital1:23785
Description: A complete tapping notation is needed by all the rubber producing countries to establish mutual understanding between research workers and rubber planters including the smallholders. The notations sho… More
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