Volume 6 Issue 2

Studies on productivity and quality of tuber for processing of potato in alluvial zone of West Bengal

Author(s): M. ROY AND S.K. MUKHOPADHYAY
Abstract: Seven potato cultivars (MP/98-172, MP/99-322, MP/99-406, Kufri Chipson-1, Kufri Chipsona-2, Atlantic and Kufri Jyoti) were evaluated for processing on the basis of yield and chemical composition at Block Seed Fann, Adisaptagram, Hooghly, West Bengal during winter season of 2005-06 and 2006-07. The experiment was carried out in Randomized Block Design with three replications. The highest number of tubers per plant was recorded from Kufri Chipsona-1 (9.33) and MP/98-172 (7.66), but the highest average tuber weight (89.2 g) per plant was obtained from MP/99-406. MP/98-172, Kufri Chipsona- 1, Kufri Chipsona-2 and Atlantic produced more than 25 t/ha tuber yield and the highest tuber yield (27.53 t/ha) was obtained from MP/98-172. MP/98-172, Atlantic, Kufri Chipsona-2 and Kufri Chipsona-1(yielded27.53, 25.95, 25.76 and 25.68 t/ha, respectively) showed an increase of 27.63, 20.3, 19.43, 19.05% yield over indigenous cultivar Kufri Jyoti (control). These cultivars recorded low reducing sugar ( 20%) except Atlantic which recorded low but very close to 20% dry matter, possessed all other desirable attributes for processing. Among the cultivars, MP/98-172 produced the maximum dry matter content (21.24%) but low reducing sugar was obtained from Atlantic (75.6 mg/JOOgfresh weight). The highest Specific gravity was recorded from Kufri Chipsona-2 (1.080). MP/99-322 scored the minimum peeling loss of tubers (9.9%) followed by Kufri Chipsona-1 (11.75 %). Kufri Chipsona-1 and MP/98-172 showed minimum physiological loss in weight (13.88% and 15.25%) and rotting of tubers (ll.1%and J 2.1%) after 90 days of storage.

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