Author(s): T. Gangarani Devi, A. Zaman and S.K. Patra

Abstract: An A field experiment was conducted to study the effect of irrigation regimes and seed soaking techniques on root growth and yield of rice at Regional Research Station, Gayeshpur, Bidhan Chandra Krishi Viswavidyalaya during boro season of 2011 and 2012. The treatment consisted of three irrigation regimes in main plots viz., I1: IW/CPE =1.0, I2: IW/CPE =1.5 and I3: IW/CPE = 2.0 and four treatments on soaking techniques in sub plots viz., P1: Sprouted seeds, P2: Dry seeds, P3: Soaking seeds overnight (12 hrs) and P4: Soaking seeds overnight (12 hrs) followed by shade drying. The field experiment was laid out in a split plot design with three replications. Statistically analysed data revealed that scheduling of irrigation at IW/CPE ratio of 2.0 produced higher root length, root weight and root volume and consequently the highest grain and straw yield than any other treatment tried. And among the different seed soaking techniques tested, higher root length, root weight and root volume was recorded at sprouted seeds which led to higher grain and straw yield. Gross return, net return and B: C ratio was found to be highest when scheduling of irrigation was done at IW/CPE ratio of 2 coupled with sprouted seeds......

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