Abstract:
The field experiment was conducted in West showa zone, Toke kutaye district of Ormia region,
Ethiopia with the objective to determine the optimum nitrogen fertilizer rate on different growth
parameters, yield and yield component of tomato crop. To attain the objective, four level of
nitrogen fertilizer Viz.,0, 50, 100, and 150kg/ha were used as treatments. The experiment was
laid out in randomized complete block design (RCBD) with three replications. Data on plant
height, primary branches per plant, number of leaves per plants, number of cluster per plant,
number of fruits per cluster and fruit yield were collected from five plants of the middle rows of
each plot and subjected to statistical analysis software (SAS) version 9.3 and LSD at 5% was
used for mean comparison. The statistical analysis showed that, there was the significant
(P<0.05) difference among treatments for all parameters except for number of fruit per cluster.
For growth variables, 150kg/ha revealed the highest value but there was no significant (P<0.05)
difference between 100 and 150kg/ha of nitrogen except for the height of the plant. The
treatment 150kg/ha nitrogen fertilizer provided 22.41, 35.57 and 25.40% over the control
treatment in height, number of leaves and primary branch, respectively. The treatment 150kg/ha
nitrogen fertilizer increased the number of cluster per plant and yield of tomato fruit per hectare
by 34.50 and 70.79% over the control treatment, respectively,. However, there was no significant
difference in both number of cluster per plant and yield per hectare between 150 and 100ka N/ha. |
