الفهرس 
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Abstract
The objective of this investigation was conducted to evaluate the effect of compost amendment relative to sulphur on the growth and yield of sweet corn grown under saline soil conditions. Also, to evaluate the effects of compost and sulphur amendments on physical, chemical and biological soil quality indicators.
To achieve these objectives, a field experiment was conducted during the growing season of 2017. Corn crop yield was considered an indicator of soil quality with the assumption that a high quality soil would result in a higher crop yield. The concept of soil quality/soil health involves more than just crop yield, but we needed a parameter that easily available and could be measured. In this experiment, each plot consisted of 5 ridges each 3.5 m in length and 60 cm in width occupying an area of 10.5 m2 (1/400 fed) with the distance between hills as the above mentioned. The land was plowed and processed for agricultural operations and was divided into 48 plot and then the compost (0, 5.25, 10.5, 21 kg / plot which correspond to 0, 2, 4, and 8 ton/fed.) and sulfur (0, 0.525, 1.05, 2.10 kg/plot which correspond to 0, 200, 400, and 800 kg/Fed.) treatments were applied. In 21th May maize (Zea mays) was seeded by hand at a depth of 2.5 cm and a rate of ” " ~ " ”2-4 seeds in each hole. The Gesaprim herbicide 80% was used to fight weeds. Nitrogen fertilizer at the rate of 47 kg N /fed was added as urea in three equal doses after 15, 30, and 45 days after sowing. Phosphorus fertilizer, as calcium superphosphate at the rate of 32kg P2O5/fed and potassium sulphate at the rate of 25 kg K2O/fed were applied during seed ped preparation. The normal agronomic practices of growing maize were practiced till harvest. Irrigation was given on the seed day and then as needed and when necessary depending on the moisture content of the soil and during the critical stages of crop growth. The experiment was laid out in complete split plot design with three replicates. At harvest soil samples were collected from each plot for physical, chemical and biological properties analysis as soil quality indicators. The results of this experiment could be summarized as follows:
Soil quality Indicators
1- The physical properties
The data showed increasing in soil aggregate stability from 0.62 mm before planting to a maximum of 1.21 at harvest with the treatment of compost (8 ton/fed) and sulphur (800 kg/fed). Also, the soil infiltration rate was increased from 14.13 mm/h to a maximum of 24.45 mm/h for the treatment of compost (8 ton/fed) and sulphur (800 kg/fed). On the other hand the results showed a decrease in the bulk density from 1.28 g/cm3 to 1.094 g/cm3 for the treatment of compost (8 ton/fed)and sulphur (800 kg/fed).
2- The chemical properties
The post-harvest soil result indicated significant (P<0.05) differences on pH, EC, SAR, soluble cations (Ca, Mg, Na, K), soluble anions (Cl, HCO3, SO4), available K, available P, extractable nitrate NO3 and micro- nutrients (Cu ,Fe ,Mn ,Ni ,Zn) due to the compost and sulphur rates and also their interactions
- pH, EC and SAR: The results showed a gradual decrease in pH values from (8.29) before planting to (7.60) at the treatment of compost (8 ton/fed) and sulphur (800 kg/fed).