الفهرس 
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Abstract
The current study was carried out on a field scale during two growth seasons (2007/2008 and 2008/2009) on the barley plants which were irrigated with the saline water and were grown in the newly reclaimed soils which are located in the West district of Maghagha, EI-Minia Governorate, Egypt. This study aims to investigate the effects of the irrigation with the saline water on some soil chemical properties, the growth and yield parameters of barley, and the chemical composition of the barley plants under application of some salinity stress alleviated amendments (farmyard manure, potassium fertilization, and putrescine ).
The experimental field was surface irrigated from a well water. The experimental design was factorial in a completely randomized block with four replicates. The experimental design consisted of three salinity stress alleviated amendments (farmyard manure, potassium fertilization, and putrescine).
The experimental design included three levels of the farmyard manure (0.0, 10, 20 ton farmyard manure/feddan), three levels of the potassium fertilization (0.0, 24, 48 kg K20/feddan), and two levels of the putrescine (0.0 and 10 11M); which were applied singly or in combination, making a total number of eighteen treatments of all.
The obtained results of the current study can be summarized under the following main seven subjects:
5.1. Evaluation of the irrigation water quality for the barley production
1- Regarding the salinity problem related with the irrigation water quality according to Ayers and Westcot (1994); the electrical conductivity (EC) value of the well water is > 3.0 dS m-I which lies under the degree of restriction on use of ”severe” in the two growth seasons, which indicates that this well water may cause a severe salinity problem in the soil.
2- Concerning the infiltration problem related with the irrigation water quality according to Ayers and Westcot (1994); the SAR value of the well water is in the range of 3.0-6.0 SAR and the EC value of the well water is > 5.0 dS m’l which lies under the degree of restriction on use of ”None” in the two growth seasons, implying that this well water may not cause an infiltration problem in the soil.
3- Considering the specific ion toxicity related with the irrigation water quality according to Ayers and Westcot (1994); the SAR value of the well water is in the range of 3.0-9.0 SAR (surface irrigation) which lies under the degree of restriction on use of ”Slight to Mode~ate” in the two gro~h seasons, suggesting that this well water may cause an increasing sodium toxicity problem.
The chloride concentration in the well water is > 1 0.0 meq/l (surface irrigation) which lies under the degree of restriction on use of ”severe” in the two growth seasons, indicating that this well water may cause a severe chloride toxicity problem.
4- Regarding the miscellaneous effects related with the irrigation water quality according to Ayers and Westcot (1994); the bicarbonate concentration in the well water is > 8.5 meq/l (overhead sprinkling only) which lies under the degree of restriction on use of ”Severe” in the two growth seasons, implying that this well water may cause a continual problem of white scale formation on the leaves or fruit when the sprinklers are used.
The pH value of the well water is in the normal range of 6.5 - 8.4 in the two growth seasons, suggesting that this well water will not cause a nutritional imbalance or may not contain a toxic ion.
5- Concerning the chemical criteria of the irrigation water according to Ayers and Westcot (1994); the Ca/Mg ratio in the well water is > 1.0 in the two growth seasons, indicating that this well water may not cause a calcium.