Author(s): A. K. Gupta, P. K. Patra, S. K. Ghosh and L. Tripathi

Abstract: A pot culture experiment was carried out at the Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal during Rabi season 2015 to evaluate the effect of organic and inorganic amendments on yield and phosphorus nutrition of rice cv. Shatabdi under Red and Laterite Zone of the State. There were six treatments with or without application of a consortium of phosphate solubilising bacteria (Pseudomonas spp.) Among different treatments, the application of silicon through calcium silicate with FYM (T5) recorded highest uptake of phosphorus in rice. P content in rice straw as well as grain was also increases significantly with the inoculation of PSB. Interaction between treatments and PSB inoculation exhibited a positive significant effect on phosphorus uptake and content in rice. The correlation between available phosphorus and plant parameters was positive and significant. Multiple regression analysis revealed that the positive influence of available P at tillering stage on grain yield and about 75 per cent of the variability in grain yield could be explained by given relationship.

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