Yhis study was investigated at Agriculture Faculty of Damascus university
during the agricultural season of 2012/2013 in order to determine the effect of
foliar spray with seaweed extract (5 and 10 g/l) and GA3 (50 and 100 ppm) on
the growth and p
roduction of local red onion (Baladi) at different levels of
irrigation (100, 75, and 50% of field capacity). Onion bulblets were planted in
pots and plants were treated when they had 3-4 leaves and every two weeks
until full vegetative growth.
The study was conducted at the growing season 2009 in one of an orchard
in Abu-Al-Khaseeb region – Basrah, studied the effects of spraying of GA3
concentration of 25 mg. l-1 and spraying of liquorice extract concentration (5,
10) g.l-1 and sprayin
g of Roselle extract concentration (15, 20) g.l-1 as well as
compared treatment (spraying with distilled water) in two stage hbabok and
Kemri on fruit drop and qualities of Braim cultivar, showed results that the
spray in hababok stage and treatment of GA3 concentration 25 mg.l-1 increased
of weight and size of the fruit significantly and did not show significant
differences between the spray at the stage of hababok and Kemri in influencing
the T.S.S., while treatment of spraying liquorice extract concentration of 5 gm.l-
1 increased total soluble solids and dry matter significantly, werever spraying at
the stage of Kemri with GA3 increased significantly in water content of fruits,
while sprarying in hababok stage increased in dry matter content of the fruits
and did not show significant differences between the results of treatments or
the stage of spraying in effect of Drop fruits for a cultivar of Braim through the
stages of growth and maturity (Khalal, Rutab and Tammar) this results
confirms that the phenomenon of drop fruit under the influence of genetic type
male and female cultivar.
Alternate bearing is one of the most important phenomena in the olive trees.
A study was conducted during 2002 - 2003 at the Agricultural Research
Center in Homs on two olive varieties (Sorani and Daebli) to assess the effect of
flower and fruit t
hinning at different time intervals on flowering
differentiatian, percentage of vegetative buds, length of branch, length of the
internodes and total number of buds. The results showed that:
- flower thinning and treatment with Gibberellic acid (GA3)
during the maximum flowering did not influence the percentage of
buds, while flower thinning during different periods folowed by
treatment with Gibberellic acid during the fruit setting phase,
endocarp sclerification had significantly decreased the percentage of
flower buds for Sorani variety in 2002 and 2003 during the fruit setting
phase and two weeks later.
In Daebli variety this treatment decreased the percentage of flower buds
during fruit setting, two weeks later, and after four weeks from fruit setting
whereas, the treatment had not effect in both the varieties during endocap
sclerification stage.
