The effect of spraying Algae extract or yeast at 0.0. 0.025. 0.050, 0.1, 0.2 or
0.4 % on leaf area and its content of N, yield as well as physical and chemical
characters of fruits in ZaghloulJ dale palms was studied during 2001. 2002 and 2003
seasons. Palms received folX sprays on March, April, May, and June. Results showed that foliar application of Algae extract or yeast each at 0.025
to 0.4 % considerably Improved the leaf area and Its content of N yield and fruit quality
compared to non - application. Spraying algae extract was superior than yeast in this
connection. The promotion on yield and fruit was associated with inaeasing
concentrations. Using concentration above 0.1 % had a slight promotion on leaf area
and its content of N, yield and fruit quality. With regard to yield and fruit quality of Zaghloul dale palms, the best result
were obtained due to spraying the palms four times with Algae extract at 0.1 %.