الفهرس 
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Abstract
This study that included two parts was initiated during 2000 and
2001 seasons in a private vineyard located at Sanaboo village, Dayrout
district, Assiut Governorate.
1-First part:
The goal was to evaluate the possibility of reusing the agricultural
drainage water either alone or in different proportions with River Nile water for irrigation of the mature Red Roomy grapevine grown in silty clay soil and to investigate the effect of the reused agricultural drainage water on growth, mineral leaf contents, total chlorophylls, total carbohydrates %, berry set %, yield as well as physical and chemical properties of Red Roomy grapes.
This part of the experiment included the following ten treatments
from irrigation water quality:-
1- Irrigation with Nile water.
2- Irrigation with drainage water.
3- Irrigation with diluted drainage water (1: 1) .
4- Irrigation with diluted drainage water (1: 2) .
5- Irrigation with diluted drainage water (1: 3) .
6- Irrigation with drainage water alternated with Nile water (1: 1).
7- Irrigation with drainage water alternated with Nile water (1:2).
8- Irrigation with drainage water alternated with Nile water (1:3).
9- Irrigation with drainage water alternated with Nile water (2:1). 10-Irrigation with drainage water alternated with Nile water (3: 1).
Irrigations with water quality treatments were carried out twelve
times started on 15 and 20 March and ended on 15 and 20 September in
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Summary and Conclusion
both seasons, respectively. Before each irrigation, water samples of Nile water, agricultural drainage water and the three blended waters ( 1:1 , 1:2, 1:3) were analysed for pH, electrical conductivity (ds/m); soluble cations i.e. Ca++ , Mg++, Na+ and K+ and the soluble anions viz. , CO3—and HCO-3 (meq/L).
The experiment was set up in a complete randomized block design. It included ten water quality treatments. Each treatment was replicated three times, One plot ( 16 m2) was used for each replicate and four vines were selected for each plot (each plot occupied 16 m2 area) making of 120 vines of all.
The second part:
This part comprised from pot experiment which was conducted during 2000 and 2001 growing seasons on transplants of one year old Red Roomy grapevines and transplants of one year old Ruby seedless grapevines grown in silty clay soil at a private nursery located at Sanaboo village, Dayrout district Assiut Governorate.
The goal was (a) to evaluate the possibility of reusing the agricultural drainage water either alone or blended with the River Nile water in different proportions for irrigation of Red Roomy and Ruby seedless grapevine transplants grown in silty clay soil, and (b) to investigate the effect of the reused agricultural drainage water on growth parameters, plant pigments, total carbohydrates % in the roots, sterns and leaves, percentages of N, P , K, Mg, Ca, Cl and Na in the roots , stems and leaves and plant uptake of these elements.
The pot experiment was initiated on the first week of March every growing season. One year old grapevine transplants, cvs,. Red Roomy and Ruby seedless were selected to be as uniform as possible in vigour. The transplants of each grapevine cv. were irrigated with the same ten
water quality treatments, previously mentioned in the first part of this study to keep the soil moisture content at the field capacity. The irrigation was performed in the morning. Chemical analysis of the irrigation water before each irrigation was conducted.
The experiment was set up in a complete randomized design. It
included ten water quality treatments of each grape cv. Each treatment was replicated three times, ten pots were used for each replicate, one grapevine transplant (cv * Red Roomy and Ruby seedless was planted in each pot making a number of 300 pots of each cv.)
In the first part of this study, the following parameters were recorded:-
1-Main shoot length (cm).
2-Leaf area (cm2)
3-Percentages of N; P, K, Mg, Ca, Cl and Na in the petioles (on dry weight basis).
4-Total chlorophylls (mg/100g F.W.)
5-Berry set %
6-Yield ( expressed in weight (kg) and number of clusters/ vine).
7-Cluster weight (g)
8-Berry index.
9-100 berry weight (g) and dimensions ( longitudinal and equatorial in cm.). l0-Berry shape index value.
I1-Shoot berries %.
12-Total soluble solids%
13-Total sugars %.
14-Total acidity %.