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To evaluate the influence of organic and inorganic nitrogen amendments on okra, field experimental trials were conducted during summer seasons of year 2016 and 2017 at Vegetable Research Centre, G.B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand with fourteen treatment combinations of nitrogen through organic (FYM and Vermicompost) and inorganic sources (Urea and Neem coated urea) along with one control treatment. The experiment was laid out in Completely Randomized Block Design with three replications and the observations on various growth, yield, quality and economic parameters were recorded. Among all other treatments, treatment T4 (RDN- 100% through neem coated urea) proved to be economically best as per benefit: cost ratio, while treatments T10 (RDN- 100% through NCU + 2.5 t/ha Vermicompost) and T6 (RDN- 75% through neem coated urea + 25% through Vermicompost) were found best with regards to increase in productivity of okra with optimum net returns, hence recommended for the present agro-climatic conditions..

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The present investigation was carried out at the experimental farm of Doon (P.G.) College of Agriculture and Allied Science, Rampur, Selaqui, Dehradun during rabi season of 2018-19. The experiment comprised of eight treatments comprising basal and foliar application of nitrogen and potassium fertilizers along with a control treatment arranged in Randomized Block Design (RBD) with three replications. The observations were recorded for various growth and yield parameters. Results of the experiment indicated significant effect of different nitrogen and potash doses application on various parameters. The treatment T8 (50% RDK + Spray of K2SO4 @ 2% at 30 DAP) was found to be the best for improving growth characters, while treatment T4 (RDF160:100:120kg NPK/ha) was found best in terms of yield parameters. Based on the results of present investigation, it could be concluded that application of RDF 160: 100: 120 kg NPK/ ha can still be adopted by the farmers but with split applications of nitrogen and potassium as recommended dose for commercial cultivation of potato under present climatic conditions to achieve higher net returns per unit area provided all other agronomic package of practices are followed.