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An experiment was conducted during the rabi season of 2012-13 and 2013-14 at Instructional Farm, Jaguli, Nadia, West Bengal to find out the different doses of nitrogen and potassium on growth and yield of potato. The experiment was designed in RBD with 10 treatments replicated thrice in potato cultivated variety Kufri Jyoti. Different doses of nitrogen and potassium were considered as treatments. For all the treatments P2O5 dose was 150 kg ha . The size of the experimental plots were 12 square meter and seed tubers were planted with 50 cm X 20 cm spacing. In this experiment, it was observed that the growth attributes like plant height, leaf area index, dry matter accumulation of tubers at 80 DAP, crop growth rate at 60-80 DAP were highest with the application of 250 kg ha -1 N, 200 kg K2O (T9) and statistically at par with 300 kg ha -1 N, Original Research Article Kundu et al.; CJAST, 36(2): 1-5, 2019; Article no.CJAST.49427 2 150 kg ha K2O (T10). Again among the yield parameters, T9 recorded the highest tuber number per square meter and tuber yield which was closely followed by T10. Highest B:C ratio was also observed in T9.This result proves that T9 can be recommended to get better growth and economic yield of potato than T10 (farmer practice does) in the new alluvial soil of West Bengal.

Effect of Different Doses of Nitrogen and Potassium on Growth and Yield of Potato (Solanum tuberosum L.) under New Alluvial Zone of West Bengal