FERTILIZER REQUIREMENTS OF CHIPPING ~ POTATO,·(SOLANUM TUBEROSUML.) CULTIVARS

Fleld_expenments were conduded to evaluate the performance of two chipping 'cultivars Kufn Chlpsona-l and Kufn Chlpsona-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 runnmg meter of area were not mfluenced ,by fertilIty levels. Process grade tuber number and YIeld were not influenced by vanable fertlhty levels. However, total number of tubers (49872 thou­ sandlha) and YIeld (291.10 qlha) were slgmficantly low 10 CV. Kufn Chlpsona-2, while both the parameters remamed unaffected due to varied nutnent levels Tubers of cv. Kufn Chlpsona-2 had higher dry matter content than that of cv. Kufn Chlpsona- 1, whIle sugar content and ChIP colour score was low In cv Kufri Chipsona-l as compared to cv Kufri Chipsona-2. Chip colour and reducing sugars were not affected SIgnIfIcantly due to vanous nutnent combtnaho~s The application of 240 kg NT 120 kg, P205 and 140 kg K 2 0 ha 1 was found optimum for realIzmg maximum process-grade YIeld 10 both the Chlpsona vanehes.