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

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The Tropical Agriculturist. The Agricultural Journal of Ceylon March 1929

1929

The value of the regression coefficient for the two series of yields for the whole period of the experiment is + 1085 and this figure is definitely significant as the odds against its being due to chance are more than 100 to 1. The conclusion therefore is that the nitrogen plot has gained on the control plot at the rate of -1 lb. [...] In order to.establish a connection between the superficial hyphae on the stems the sclerotia found on the surface and the hyphae on the lesions fragments of diseased tissue underlying the lesions the hyphae on the stems and individual sclerotia were130 taken into culture on maize.meal agar. [...] The mode of growth of the Pentas fungus in culture on maize meal agar and the morphological characteristics of the hyphae and sclerotia were identical with the mode of growth and the morphlogical characteristics of Rhizoctonia Solani from Dolichos Hosei paddy and groundnut when grown on the same medium (1). The sclerotia of Rhizoctonia Solani from Pentas in nature were smaller than those of t [...] Running among the cells were fungus hyphae narrow and with many oil drops and it was apparent that the condition of the pith was due to the absorption of the middle lamellae of the cells by an enzyme secreted by the fungus. [...] The author unfortunately fails to suggest control measures beyond stating that in cases of attack by P. complectens the progress of the disease is eventually stopped by the formation by the plant of a cork cambium which delimits the diseased tissue and arrests the advance of the fungus.
agriculture environment
Pages
70
Published in
Sri Lanka
SARF Document ID
sarf.120021
Segment Pages Author Actions
Seed Selection and Rubber
125-126 unknown view
The Effect of Nitrogen on The Yield of Rubber
127-128 L. Lord view
A Sclerotial Disease of Pentas Carnea Benth
129-132 L.S. Bertus view
Geranium Stem Rot Caused By Pythium Sp.
133-i J.C. Haigh view
Field Observations and Experiments on the Pollination of Hevea Brasiliensis
135-140 unknown view
Latex Tube Bore
141-148 unknown view
Manuring of Rubber
149-151 unknown view
Bunchy Top Disease of Bananas in Queensland
152-154 unknown view
Application of Science in Agriculture
155-160 unknown view
Horticulture in the Tropics
161-165 unknown view
Cardamom(Elettaria Cardamomum Maton)
166-169 S. Ensal, T. Alum view
The World Agricultural Census of 1929-30
170-172 unknown view
Tea Research Institute of Ceylon-Meeting of Board
173-178 unknown view
Meeting of Board of Tea Research Institute
179-179 unknown view
Progress Report of the Experiment Station Peradeniya:For the Months of January and February 1929
180-181 T.H. Holland view
Reviews
182-184 unknown view
Soils and Fertilisers in 1927
185-188 unknown view
The Tropical Agriculturist-The Agricultural Journal of Ceylon
i-ii unknown view

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