Jayaramaiah, RIRFAN, M. M.2017-08-072017-08-072015-07-10Th-11156http://krishikosh.egranth.ac.in/handle/1/5810027707A field experiment was conducted during Kharif 2014 at College of Agriculture, Hassan, University of Agricultural Sciences, Bengaluru to study the effect of different levels of nitrogen , potassium and micronutrients on growth, yield, quality, nutrient uptake and economics of potato in red sandy loam soil. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications and twelve treatment combinations . The investigation revealed that, 125 % recommended N and K + 0.5 % ZnSO4 * + 0.2 % Borax* @ 45 DAP recorded significantly higher plant height (68 cm), number of shoots (4.2 plant-1), number of leaves (88 plant-1), total dry matter production (65 g plant-1) and late blight incidence and severity recorded (9 %) 75 DAP and tuber weight (279.5 g plant-1), number of tubers (4.9 plant-1), tuber yield (23.3 t ha-1), protein content (13.9 %) and nutrient uptake (104.7, 36.4 and 103.7 kg N, P2O5 and K2O ha-1) at harvest. However, it was on par with 75 % recommended N and K + 0.5 % ZnSO4 * + 0.2 % Borax* @ 45 DAP. Higher net returns ( .156049 ha-1) and B:C ratio (3.4) was recorded in 75 % recommended N and K + 0.5 % ZnSO4 * + 0.2 % Borax* @ 45 DAP.ennullThesis