1Central Potato Research Institute Campus, Modipuram, Meerut, 250 110, Uttar Pradesh, India.
2Central Potato Research Institute, Shimla, 171 001, Himachal Pradesh, India.
Field experiments were conducted to evaluate the performance of two chipping cultivars Kufri Chipsona-1 and Kufri Chipsona-2 under sub-tropical conditions of west-central plains at different fertility levels. Results indicated that the plant height, leaf number plant−1 and stem number per running meter of area were not influenced by fertility levels. Process grade tuber number and yield were not influenced by variable fertility levels. However, total number of tubers (498.72 thousand/ha) and yield (291.10 q/ha) were significantly low in cv. Kufri Chipsona-2, while both the parameters remained unaffected due to varied nutrient levels. Tubers of cv. Kufri Chipsona-2 had higher dry matter content than that of cv. Kufri Chipsona-1, while sugar content and chip colour score was low in cv. Kufri Chipsona-1 as compared to cv. Kufri Chipsona-2. Chip colour and reducing sugars were not affected significantly due to various nutrient combinations. The application of 240 kg N, 120 kg P2O5 and 140 kg K2O ha−1 was found optimum for realizing maximum process-grade yield in both the Chipsona varieties.
