cover image: The Tropical Agriculturist. The Agricultural Journal of Ceylon  October  1930

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The Tropical Agriculturist. The Agricultural Journal of Ceylon October 1930

1930

Under natural conditions the rank growth of plants on the surface of the land and the accumulation of fallen leaves from the trees above. subdue the force of the precipitations and whatever water reaches the ground is to a great extent absorbed by the thick layer of leaves and humus while the surplus water flows away over the thick carpet of dead leaves. [...] This investigation is being carried out by the London Branch of the Research Scheme at the Imperial Institute but before being despatched to London the samples were carefully examined from the point of view of appearance and it is cosidered to be of interest to record the conclusions which were reached with regard to the general standard of appearance of the rubber. [...] Chemical tests were therefore carried out to determine whether there is a relationship between the hardness of the samples and (a) the amount of mineral matter present (b) the amount of moisture in the rubber and (c) the acidity of some of the non-rubber accessory substances. [...] The results indicate that although the addition of bisulphite to the latex has a distinct hardening effect on the rubber this is not related to the amount of mineral matter in the rubber or to the acidity of the watesoluble substances or of the acetone. [...] The natural cytile of changes are those of a forest in which a considerable proportion of the available food passes round a continuous cycle from the soil to the tree and from the tree hack to the soil again in the form of leaf fall.
agriculture environment
Pages
68
Published in
Sri Lanka
SARF Document ID
sarf.120021
Segment Pages Author Actions
Frontmatter
i-ii unknown view
Editorial
189-190 unknown view
The Control of Tea Termites
191-195 F.P. Jepson view
Coelogyne Dayana
196-197 K.J. Sylva view
Weeds
198-205 J. Soyza view
Notes on the Appearance of Samples of Smoked Sheet and Blanket Crepe from Estates
206-212 T.E.H. O℉brien view
Report on the Effect of Adding Sodium Bisulphite to Latex on the Plasticity of Crepe
213-215 G. Martin, L.E. Elliott view
Manuring of Rubber
216-220 unknown view
Agricultural Co-Operation
221-223 unknown view
Harvesting the Results of Research
224-226 unknown view
The World’s Coconut Crop
227-229 unknown view
Empire Marketing Board Stimulating Tropical Research
230-231 unknown view
Rice Grass: Its Dual Utility
232-233 unknown view
Transplanting Fruit Trees
233-233 unknown view
Animal Husbandry
234-236 unknown view
Care of the Dairy Cow at Calving Time
237-239 unknown view
Coconut Research Scheme (Ceylon)
240-242 unknown view
Progress Report of the Experiment Station Peradeniya
243-250 unknown view
Animal Disease Return for the Month Ended 30th September 1930
251-251 unknown view
Meteorological Report
252-252 unknown view

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