The production of sugar in Rgypt is mainly from sugarcane, which
contributes about 90% from the total production of sugar, while the rest comes
from sugurbect.
Sugarbeet is shorter in growing season with less water consumption than
sugarcane. Therefore, attention is paid nowadays towards increasing yield of
sugarbeet.
Irrigation and fertilization are two of the important factors affecting yield
and quality of sugarbeet in the new areas.
This study is carried out to evaluate the usage of sprinkler irrigation system
compared with the surface irrigation method under different levels of nitrogen
fertilization.
The results indicated that the average seasonal water applied by sprinkler
irrigation was 2982 in'1, while it was 3958m' by surface irrigation. Moreover, the
root yield was 25.81 and 20.94 I/fed for sprinkler and surface irrigation
respectively.
Sprinkler irrigation resulted in higher root yield, sugar yield and water use
efficiency (WUH) than surface irrigation. Also, for both systems of irrigation,
increasing ihe level of N-fertilizer up to 60 kg N/fed was accompanied with
significant increases in sugar yield and WUE, but under 75 kg N/fed, sugar yield
decreases |
