Studies on the Wilt (Root) Disease of the Coconut Palm - A comparative study of the rhizosphere microflora of coconut from diseased and healthy areas
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1954
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1: The cause of the sudden wilting of coconut palms in the Thottapally Spillway area, where, peaty subsoil has been dredged dumped on to the base of healthy palm has been investigated and described 2. The wilting of the palms appears to be due to their desiccation and root injury as a result of the change in the soil conditions caused among other factors viz. (a) the high acidity of the dredged subsoil and subsoil water. (i) the presence in it of readily pxidisable agents such as sulphides, ferrous iron etc. (c) the presence in it of toxic agents such as soluble ferrous iron and soluble aluminium (d) potential capacity of the subsoil for the formation of free mineral acids by hydrolytic changes as well and (e) complete anaerobic condition in the root rhizosphere causing intense root suffocation. 3. The cause of the wilting has been shown to be purely a physiological factor.
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Indian Coconut Journal, April-June 1954