A comparative study between garlic extract and hydrogen cyanamide on flowering, fruit set and productivity of grapes [electronic resource].
Language: English Summary language: Arabic Description: p. 199-222Other title:- دراسة مقارنة بين مستخلص الثوم وسيناميد الهيدروجين علي التزهير والعقد والإنتاجية في العنب [Added title page title]
- Egyptian journal of desert research, 2018 v.68 (2) [electronic resource].
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Articles
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Main | ART EJDR V68 No2 3 (Browse shelf(Opens below)) | Available |
Includes references.
This experiment was carried out during 2016 and 2017
seasons on Flame Seedless grapevines grown at El-
Khatatba district, in Menofia Governorate, Egypt.
Climate is one of the important factors that control grape production,
in warm-winter regions, where the need of intervention of chemical
means to break bud rest becomes a dominant factor for maintaining
economic production of table grapes. However, the problem is more
acute when farmers want to grow on organic table grapes in the
absence of environmentally friendly natural bud break promoters.
This study aimed to evaluate the effect of a garlic extract in
comparison to the conventional use of hydrogen cyanamide in
promoting bud break and their effects on cluster quality of Flame
Seedless grapevines, aiming to invade the markets earlier to maximize
the benefits for the producers and to avoid the negative effects of high
summer temperature on the vine clusters quality if harvested late.
Moreover, this study is a trail to examine to how extent garlic extract
(which contains GA3 like substance) can substitute the declination of
chilling hours. Five treatments of foliar application [tap water
(control); hydrogen cyanamide (H2CN2) 3 and 5%, garlic extract (GE)
3 and 5%] were applied to the vines on three times [the first (D1), mid
(D2) and the end (D3) of December]. The obtained results revealed
that all treatments were very effective in stimulating vegetative
growth, bud burst %, yield, physical and chemical characteristics of
the fruits. Generally, D2 was better than the other two times of
spraying in all parameters. Vines that had been sprayed with 5% GE
on D2 were the best for early harvest time as compared with the two
other times. In addition, this treatment increased bud burst, leaves
number per new shoot, leaf area and chlorophyll content, cluster
weight, yield, the average weight and volume of 100 berries, cluster
number, cluster length, cluster width, berry length and diameter, total
soluble solid, total sugar, while decreased total acidity. In addition
vines that had been sprayed with 5% GE on D2 gave early blooming
(decreasing the time from spraying to blooming).
Summary in Arabic.
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