الفهرس 
Soil moisture distributionOnly 14 pages are availabe for public view
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Abstract
This experiment was carried out during the two successive seasons 2020
and 2021 on Flame Seedless grapevines grown in sandy soil under drip
irrigation system at EL-Tahrir, El Beheira Governorate. The aim of this study
was to save irrigation water without any reduction of water use efficiency,
growth and productivity of Flame Seedless grapevine under desert condition.
The experiment design was arranged in a split- plot with three replications.
The main plots were divided into three drip irrigation systems, i.e. surface drip
irrigation, subsurface drip irrigation and Oscop drip irrigation either a solely
form alone or in combined with three doses of polymer i.e. zero, 25 and 50g.
The sub-plots were allocated to three irrigation levels (100%, 75% and 50%
of water requirements). The obtained results cleared that: Oscop drip
irrigation with 50g of polymer under 75% of water requirements resulted the
best vegetative growth, cluster weigh, total yield,
cluster length and width, berry dimensions, weight and volume of 100 berries,
soluble solids content (SSC) and sugar contents in berries Juice. Also, Oscop
drip irrigation with 50g of polymer under 75% of water requirements improve
water use efficiency. On the other side, Oscop drip irrigation with 50g of
polymer under 75% of water requirements gave the lowest total acidity in both
seasons.