الفهرس 
Material and methodsOnly 14 pages are availabe for public view
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Abstract
In order to evaluate the effect of bicarbonate ion in saline irrigation
water, soil samples at (0-15) and (15- 30) cm depths were taken from Ras
Sudr Experimental Station, South Sinai to represent saline calcareous soils . The following results were obtained:
Electrical conductivity Ec
Electrical conductivity increased in the surface soil decreased with increasing farmyard manure or sulfur. The role
manure was enhancing the soil structure and drainage of soluble salts while the role of sulfur was enhancing soil structure and decreasing soil pH .
2.Soil pH Sulfur oxidation produced sulfate which decreased soil pH .
Also organic manure decomposition produces different acids which decrease soil pH.
3.Soluble Na’ in soil The soluble Na` ion in irrigation water should be minimized while
the added soil conditioners such as FYM or S should be enough. The effects of the organic manure and sulfur were low on soluble Na` at 10 and 15 mel) bicarbonate concentrations.
4.Soluble le in soil The effect of interaction among bicarbonate, organic manure and
sulfur on soluble le in the soil were studied. where both organic manure and sulfur increased soluble le in soil. The highest soluble le was in case of 0M252 under bicarbonate concentration of 2.5 meL4 (initial).
layer and of organic
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The highest concentration of soluble K+ may be arranged as the following:
(HCO3)0 0M2S2 > (HCO3)2 0M2S2 > (HCO3)1 0M2S2 = (HCO3)3 0M2S2.
5.Soluble (Ca” + MC) in soil.
The favorable effect of organic manure and sulfur on soluble (Ca” + MC) decreased with increasing the added bicarbonate concentration to 10, 15 mel..”1.
6.Soluble HCO3 in soil.
The best treatments were 0M2S, at control (2.5 mel: bicarbonate) and OK% at 5 mel) bicarbonate concentration.
7.Soluble CI” in soil.
The best treatment of organic manure with respect to CF concentration was 10 m3/fed under all the added bicarbonate concentrations but the 20 m3/ fe d level was high in its content of CF. However, sulfur up to 500 kg/fed decreased the soil chloride concentration, and the best treatment was OM,S2 under all treatments of bicarbonate.
8.Soluble 50-4 in soil. The rate of 10 m3/fed farmyard manure was the best treatment,
inducing the leaching of sulfate salts. On the other hand, organic manure at the rate of 20m3/fed increased the soluble sulfate.
The best treatment was OMISI under all the treatment of bicarbonate concentrations.
9- Available Fe” in soil.
The highest value of available Fe” in soil was in case of OK S2 at all
treatments of bicarbonate concentrations in saline irrigation water. 10-Available Mn” in soil. The soil available Mn” increased with increasing either organic
manure or sulfur rates.
The highest values of available Mn” were found with 0M2 52 under all the treatments of bicarbonate concentrations in saline irrigation water.
11-Available Zn’ in soil. The soil available Zit in soil increased with increasing both organic
manure and sulfur rates. The highest values of available Zn” were 0M2S2 at all treatments of bicarbonate concentrations in saline irrigation water.
12-Grains yield. The best treatment was (HCO3)0 0M2 S2 but the best treatment from
the economical point of view was(HCO3)i OM, S2 which did not differ significantly from the former treatment.
13-Straw yield. The organic manure and sulfur application had a positive
and significant effect on straw yield where the best treatment was (HCO3)0 0M2 S2.