cover image: The Tropical Agriculturist. The Agricultural Journal of Ceylon  June  1929

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The Tropical Agriculturist. The Agricultural Journal of Ceylon June 1929

1929

PHYSIOLOGICAL BOTANIST RUBBER RESEARCH SCHEME ( CEYLON ). THE following note on brown bast disease of rubber is of the nature of a progress report and in it are collected in brief the results of a number of experiments and pieces of circumstantial evidence which appear to the writer to support his theory of the cause of the disease. [...] Two cuts of equal length about one-third circumference and at the same height were opened one on either side of each of the trees These cuts were tapped twice daily The normal flow of latex was permitted from one of the cuts but the flow was restricted on the other by the immediate application of alcohol. [...] The conclusion drawn by the writers has already been dealt with and it is thought that this with the evidence of the experiment mentioned above is sufficient to warrant the statement that the amount of cutting is not the controlling factor. [...] The actual effectiveness of the osmotic pressure of any cell is reprsented by the formula P—T where T represents the total potential osmotic power and T denotes the counter pressure exerted by the cell wall plus the pressure of the surrounding turgid cells. [...] The possibility that the disease originated at the wound and spread down seems rather remote as the further away from the wound the less the upsetting of the pressures becomes and the more easily is the balance restored provided no diseased area is crossed.
agriculture environment
Pages
70
Published in
Sri Lanka
SARF Document ID
sarf.120021
Segment Pages Author Actions
Frontmatter
i-i unknown view
Ceylon Termites
315-i unknown view
A Root Growth Experiment With Hevea
317-i H.W. Roy Bertrand view
A Note on Brown Bast
323-336 R.A. Taylor view
An Improvement on Acetylene for the Illumination of the Optical Lantern
337-338 N.K. Jardine view
Mr. Ormsby-Gore and Tropical Development
339-342 unknown view
The Functions of an Agricultural Officer in the Tropics
343-346 unknown view
The Tea Industry in Java
347-359 unknown view
Tea Growing in Russian Trans-Caucasus
360-363 unknown view
Preserving Wood Against Dry-Rot
364-367 unknown view
Coconut Research Scheme Board of Management
368-369 unknown view
Ceylon Tea Research Institute
370-373 unknown view
Report on The Second Annual Agricultural and Industrial Show Alubomulla
374-374 unknown view
Paddy Cultivation Competition In Matale South
374-375 unknown view
Paddy Cultivation Competition In Matale East
375-375 unknown view
Pure Line Paddy Cultivation Competition In Yatinuwara and Harispattu
375-375 unknown view
Plant Diseases
376-376 unknown view
Animal Disease Return for the Month Ended 31st May 1929
377-377 unknown view
Meteorological
378-378 unknown view

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