Effect of integrated nutrient management on microbial density, yield and quality attributes in potato under hill zone of Karnataka

In order to know the effect of INM on microbial content, yield and quality parameters, the study was undertaken at College of Horticulture, Mudigere by adopting RCBD design with 3 replications and 14 treatments. The results revealed the combination of 75 % RDF + Azotobacter + PSB + KSB + MgSO4 + Micronutrient mixture recorded the maximum bacterial count (231.67 and 229 cfu/ g count of soil at 10-5 and 10-6 dilutions, respectively), PSB (13 and 12.67 at 10-5 and 10-6 dilutions, respectively) and KSB (6.43 and 6.26 at 10-5 and 10-6 dilutions, respectively). Yield attributes like number of tubers per plant (2.97), and plot (10.50 Kg/plot) marketable yield per plant (171.03 g/plot) and plot (6.83 Kg/plot) were also high in the same treatment. Quality attributes like total sugar (2.34 %), reducing sugar (1.27 %) and starch (18.47 %) were also found high in the same treatment.