Document Type : Original Article
Authors
1
Sugar Crop Inst., Agricultural Research Center, Giza, Egypt.
2
Agronomy Dept., Faculty of Agriculture, Ain Shams Univ. Cairo, Egypt.
3
Plant Nutrition Dept., Soil, Water and Environment Research Inst., Agricultural Research Center, Giza, Egypt .
Abstract
Experiments were carried out during 1998 / 1999 and 1999 / 2000 seasons to evaluate the productivity of seven different newly imported sugar beet varieties planted in silty clay soil at Sakha Agricultural Research Station , Agricultural Research Center , Kafr El-Sheikh Governorate . Growth , yield , yield components and root chemical contents of these varieties were monitored after 90 and 120 days from sowing and at harvest time as well . Varieties studied showed significant differences in their productivity in the experimental site , whereas , Farida var. was superior in root fresh weight . Moreover , growth of these varieties varied at vegetative sampling periods , these variation were remarkably during the first 90 days from sowing , later growth characters values did not show significant differences at 120 days from sowing . Farida var. showed superiorty in growth parameters and accordingly gave the highest root and sugar yield . On the other hand , Farida variety did not form the hugest above ground vegetative mass since Athospoly variety was superior in top fresh weight / plant (0.94 kg / plant) and accordingly reached the maximum in top yield (25.8 ton / fed.) with no significant differences with Farida var. (26.3 ton / fed.) . However , values of top yield (ton / fed.) between Farida and Athospoly did not differ significantly . Root fresh weights were varied significantly among the seven studied varieties , whereas , a percentage of 0 , - 2.94 , -18.63 , -17.65 , +19.61 , + 5.88 and +14.71 % deviation from the average fresh root weight / plant which was 1.02 kg were calculated for Lola , Kawemira , Top , Raspoly , Farida , Pamela and Athospoly respectively . Varieties studied could be classified according to its root and sugar yield in the experimental site to ; I- High productivity varieties which are , in descending order , Farida , Athospoly and Pamela , II- Intermediate productivity varieties which is Lola and III- Low productivity varieties which are , in descending order , Kawemira , Raspoly and Top < /p>
Keywords
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