Evaluation of potato varieties under rainfed conditions in West Kameng District of Arunachal Pradesh

A field experiment was conducted during spring season at farmers’ field to study the suitability of five different potato varieties viz., Kufri Jyoti, Kufri Kanchan, Kufri Giriraj, Kufri Girdhari and Kufri Pukhraj. The experiment was laid out in randomized block design with three replications. The experimental site is located at 1500 m above mean sea level at approximately 27035’84″ latitude and 92024’09″ longitude, and falls under temperate sub-alpine to sub tropical climate with minimum temperature and maximum temperature ranged from 7.72ºC to 18.82ºC and 22.28ºC to 27.88ºC respectively, with annual mean rainfall of 1578 mm during the investigation period. The soil of the experimental site was red sandy hilly soil with 217.5, 365.7 and 134.4 kg NPK per hectare, respectively. No significant effects were observed in germination percentage and plant height at 60 d after planting among the varieties. However, significant variations were observed in plant height at 30 d after planting, number of stems and leaves per plant, number and total yield of tubers among the different varieties.