NITROGEN AND POTASSIUM FERTILIZATION LEVEL RESPONSES IN POTATO

A potato field trial was carried out during winter season of 2018-19 at experimental farm of Doon (PG) College of Agriculture and Allied Sciences, Rampur, Selaqui, Dehradun.This work aimed to determine the response of nitrogen and potassium fertilizer on potato (Solanum tuberosum L.).The experiment was organized as per Randomized Block Design having three replicates of eight treatments.Observations were recorded on growth and yield contributing parameters at 60 days after planting and at harvest, respectively.The results indicated superiority of application of 50% RDK + Spray of K 2 SO 4 @ 2% at 30 DAP over other treatments in terms of growth and per hectare number of tubers.Application of 50% RDN + 1% Urea foliar spray at 30 days statistically affected per hectare number of tubers of grade A and C. In terms of yield, application of RDF 160: 100: 120 kg NPK/ha was found best.Based on the results of this study, it can be concluded that nitrogen and potassium interaction not only increase the growth parameters but also the yield of potato.