Search. Read. Cite.

Easy to search. Easy to read. Easy to cite with credible sources.

Pakistan Journal of Biological Sciences

Year: 2001  |  Volume: 4  |  Issue: 10  |  Page No.: 1184 - 1187

Effect of Eyes Number in Cut Seed Tuber and Different Levels of Nitrogen on Growth, Yield and Grading of Tuber Size in Potato ( Solanum tuberosum L.)

M. N. U. Shakh, M. A. Awal, S. U. Ahmed and M. A. Baten


Effect of different eyes number viz., E1, E2 and E3 per cut seed tuber and five levels of nitrogen viz., N0, N60, N120, N180 and N240 and their all possible combinations on the growth, yield and tuber size grading of potato (cv. Diamant) was studied at the Bangladesh Agricultural University during 1997 and 1998 cropping season. Canopy coverage, main stem number hill-1, tuber number hill-1 significantly increased with the increasing number of eyes in cut seed tuber piece. Cut seed tuber piece with 3 eyes required the shortest period to shoot emergence, but produced the smallest tubers. Three eyed cut seed tuber produced the maximum tuber yield, 31.7 t ha-1, which was statistically similar to 2-eyed seed piece (31.4 t ha-1). Higher nitrogen significantly increased all the parameters studied and took less number of days to shoot emergence and tuber maturity. 240 KgN ha-1 produced the maximum tuber yield (35.2 t ha-1), but the performance of N180 and N240 showed non-significant variation. Grade A (>55 mm) and B (55-40 mm) sized tubers increased, but grade C (40-28 mm) and D (<28 mm) sized tubers decreased with the increase of nitrogen. The highest tuber yield was obtained from the combination (s) of E2 X N240 or E3 X N180. Maximum tubers of grade A, B, C and D were produced from the combinations of E1/E2 X N240, E1 X N60/N240 or E2 X N60/N180 or E3 X N60, E3 X N0 and E2 X N0, respectively. From the economic point of view, 2-eyed seed tuber piece and 180 KgN ha-1 were the best either singly or combinely to achieve maximum growth and yield potential.

Cited References Fulltext