Browsing by Author "Subba Rao, N.S."
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Item Distribution and activity of phosphate solubilising microorganisms in the rhizosphere of coconut and cacao under mixed cropping(2007-02-08) Nair, S.K.; Subba Rao, N.S.Two efficient phosphate solubilising microorganisms, Pseudomonas sp. and Aspergillus niger, were isolated from the rhizosphere of coconut and cacao. They were capable of solubilising 49.0 % and 49.7 % inorganic phosphate. The incidence of phosphate solubilising microorganisms and available phosphorus in different rhizosphere soils were directly related.Item Microbiology of the Root Region of Coconut and Cacao Under Mixed Cropping(2007-02) Nair, S.K.; Subba Rao, N.S.Mixed cropping of cacao in coconut plantations improved the microbial activity in the rhizosphere of coconut which may be attributed to an increase in organic matter content of soil due to periodic shedding of cacao leaves. When compared to coconut cultivation without cacao, mixed cropping of coconut with cacao appeared to stimulate the population of bacteria and fungi in the rhizosphere of coconut, including the nitrogen fixing and phosphate solubilising bacteria. The occurrence of indole acetic acid producing Escherichia sp. on the root surface of coconut and the appearance of gibberel-lin(like-substance) producing Aspergillus flavus and A. fumigatus in the rhizosphere were other salient observations made in a pioneering study on the microbiology of the root region of plantation crops under mixed cropping.Item Nodulation of Soybean as Influenced by the Liquid Endosperm of Coconut(1970) Iswaran, V.; Jayasanker, N.P.; Jauhri, K.S.; Subba Rao, N.S.