Author(s):

Hussain S, Nag K and Singh T

Abstract: The treatments comprised four nitrogen levels (0, 80, 100 and 120 kg/ha) and three size of tuber (25, 35 and 45 g). The significantly tallest plants were recorded with the application of N₁₂₀ at all the growth stages. The height was up to 77.93 cm at harvest stage, where as it was only 53.94 cm under N₀ nitrogen. The highest plant height was recorded by largest 45 g tuber size at all the stages of observations. The lowest height was noted from smallest 25 g tuber size. At harvest stage, 45 g tuber size recorded 67.47 cm height as against only 63.30 cm under 25 g tuber sizes. The varying levels of nitrogen showed significant effect upon number of branches/plant at all the stage of observations. At harvest stage, the maximum branches were 4.73/plant due to N₁₂₀, where as minimum 3.11/plant under without nitrogen. The tuber size of 45 g recorded significantly more branches/plant over 25 g tuber sizes only at every stage. At harvest stage, maximum branches from 45 g tuber size were 4.09/plant which were decreased to 3.73/plant under 25 g tuber size. The significantly highest leaves/plant was recorded due to N₁₂₀over the preceding N-levels at every stage. The maximum leaves count at N₁₂₀was 58.29/plant at against only 43.18/plant under N₀ nitrogen. The largest tuber size (45 g) recorded non-significantly highest leaves count at 30 and 60 DAS, but significantly highest (51.31/plant) at harvest stage. The smallest tuber size (25 g) recorded minimum leaves count at every stage (50.60 cm at harvest). The stem diameter was influenced significantly due to N-levels at every stage. At harvest stage, N₁₂₀ resulted in significantly highest stem diameter (6.24 cm) over all the preceding N-levels.

Pages: 91-95  |  1531 Views  533 Downloads

Download (440KB)