Int.J.Curr.Microbiol.App.Sci (2020) 9(4): 1518-1526 1518 Original Research Article https://doi.org/10.20546/ijcmas.2020.904.179 The Effect of Integrated Nutrient Management (INM) and Zn Fertilization on Yield of Potato Ajay Dev 1 , Suresh Kumar 1 , Deepak Kumar 2 , Vivek Kumar Patel 1 *, Abhay Kumar 3 , Rohit Kumar Sahu 4 and Pratibha Singh 5 1 Department of Soil Science and Agricultural Chemistry, Acharya Narendra Deva University of Agriculture & Technology, Kumarganj, Ayodhya, Uttar Pradesh (224229), India 2 Department of Soil Science, S. V. P. University of Agriculture and Technology Meerut, Uttar Pradesh (250110), India 3 Department of Agricultural Biotechnology and Molecular Biology, RPCAU, Pusa, Samasatipur, Bihar (848125), India 4 Department of Genetics and Plant Breeding, 5 Department of Extension Education, D.D.U, Gorakhpur University, Gorakgpur, Uttar Pradesh- 273009, India *Corresponding author ABSTRACT International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 9 Number 4 (2020) Journal homepage: http://www.ijcmas.com The present investigation was carried out at Student Instructional farm Narendra Deva University of Agriculture and Technology Narendra Nagar Kumarganj, Ayodhya (U.P.) during Rabi season 2017-2018. To evaluate the Effect of nutrient management practices on the performance of potato (Solanum tuberosum L.) and soil fertility. The five treatments comprised with various levels of 75% and 100% recommended doses of NPK, ZnSO 4 (20, 30and 40 kg ha -1 ) and 25% Nitrogen by Farm yard manure were tested against 100% NPK fertilizers alone were replicated four time in randomized block design (RBD) potato crop the variety KufriBaadshah was taken a test crop. Results revealed that the integrated use of 75% recommended doses of NPK fertilizers (180:80:100), 25% nitrogen by Farm yard manure as well as 20kg ha -1 ZnSO 4 in potato was found superior for higher plant growth, productivity and better marketable quality of tubers. The availability of NPK nutrients, organic carbon, moisture retention capacity of soil increased while bulk density, soil pH, and electrical conductivity decreased at higher rate by applying 75% recommended doses of NPK and 20kg ha -1 ZnSO 4 fertilizers with Farm yard manure as compared to 100% recommended doses of NPK fertilizers alone. The application of 75% recommended doses of NPK, 20 kg ha -1 ZnSO 4 fertilizers and 25% Nitrogen by Farm yard manure provided highest net returns (Rs. 193639) and cast benefit ratio (2.48). It was concluded that application of 75% RDF, 20 kg ha -1 ZnSO 4 fertilizers and 25% nitrogen by Farm yard manure may be recommended for higher productivity and returns, and build up soil fertility. Keywords ZnSO4, NPK, FYM, Potato, Yield and growth attributes Accepted: 12 March 2020 Available Online: 10 April 2020 Article Info