Effect of Planting Dates and Nitrogen Levels on Yield and Its Attribute of Potato cv. Kufri Lima

The experiment entitled “Effect of planting dates and nitrogen levels on potato cv. Kufri Lima” was conducted at Research Farm of the Department of Vegetable Science, CCS Haryana Agricultural University, Hisar during winter season of 2020-21. The treatments comprising of three planting dates (25th September, 10th October and 25th October) and four levels of nitrogen (0, 75, 100 and 125% of RDN) were laid out in a randomized block design (factorial) with three replications. The results revealed that most of the growth and yield parameters like, plant emergence, number of leaves at 60 DAP, number of stems, leaf and stem weight per hill at harvest, weight of foliage, number and weight of tubers in grade >25-50, >50-75, >75 g, total number of tubers (m2), total tuber yield (kg/m2 and q/ha), marketable tuber yield and harvest index was recorded maximum with 10th October planting, however, plant emergence, number of leaves, number of stems, number of tubers upto 25 g grade, weight of tubers in >25-50, grade and harvest index was at par with 25th October planting. Among the nitrogen levels, all growth, yield and its attributing characters were increased as the nitrogen levels increased up to 100% of recommended dose of nitrogen application, thereafter, increased non-significantly except number of unmarketable which was maximum under control and weight of tuber upto 25, >25-50 grade which were recorded non-significant.