Manoj RaghavAnil Chander2016-06-112016-06-112014-08http://krishikosh.egranth.ac.in/handle/1/67192Thesis-PhDThe present investigation was undertaken at Vegetable Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar during rabi seasons of 2011-12 and 2012-13 to evaluate the effect of planting dates on growth, yield and quality of potato (Solanum tuberosum L.) varieties. The experiment was conducted in two factor randomized block design with three replication and sixteen treatments. The response of potato to various treatments was measured in terms of quantitative expression i.e. emergence per cent, plant height, stem width, number of stem per hill, number of leaves per hill, leaves weight per hill, leaf area index, weight of foliage, grade wise number of tubers per plot and per hectare, total number of tubers per plot and per hectare, grade wise tuber yield per plot and per hectare, total yield per plot and per hectare, specific gravity, dry matter content of tubers and economics of various treatments were also evaluated. Based on the finding of two season study conducted during rabi season of 2011-12 and 2012-13, it may be concluded that the variety Kufri Badshah produced highest total tuber number, total tuber yield, marketable yield along with highest net profit and Benefit: Cost ratio followed by variety Kufri Pukhraj when planted on October 22.enplanting date, potatoes, solanum tuberosum, crop production, production possibilities, economic growthThesis