Amelioration techniques for saline sodic soils in north Nile delta and its impact on sunflower productivity
Abstract: A filed experiment was conducted during summer season 2004 in a saline sodic soil at El-Serw Agricultural Research Station (Damietta Governorate), to study the effect of sugar industrial wastes (filter mud and sugar lime), gypsum and elemental sulphur which was added alone or combined with them under frequency of irrigation, on some physical and chemical properties of soil, productivity and water use efficiency. The treatments that subjected in this study were eight treatments of amendments untreated i.e. control, gypsum at a rate 5 ton/fed, elemental sulphur at a rate 0.5 ton/fed, industrial wastes (mixture of filter mud and sugar lime 1:1 w/w) at a rate of 10 ton/fed as well as their combination under two irrigation intervals 7 and 14 days.
In regard to soil physical properties, data revealed that application of amendments and/or sugar industrial wastes under the two irrigation intervals increased the aggregates size, particularly of (2-1 mm) in diameter and total water stable aggregates, and at the same time, decreased the fine aggregates size (<0.125 mm) in diameter. Consequently, infiltration rate and available water were increased and bulk density was decreased, particularly in the surface layer (0-20 cm) in the presence of applied with gypsum+sulphur combined with (filter mud + sugar lime) under 7 days of irrigation interval as compared with the other treatments.
As for the chemical properties, data showed that, pH, EC, ESP and O.M were positively affected either by applied gypsum, sulphur and/or filter mud + sugar lime application, particularly in surface layer (0-20 cm) under 7 days of irrigation interval as compared with other treatments.
Plant height, head diameter, seed yield, oil content and water use efficiency were enhanced in response to different treatments of amendments under irrigation intervals as compared with the untreated soil.
The best treatment in reference to improve soil physical and chemical properties as well as increasing sunflower yield and water use efficiency, was the combined treatment of 5 ton gypsum+ 0.5 ton sulphur+ 5 ton filter mud +5 ton sugar lime per feddan under 7 days irrigation interval
Publication year 2007
Pages 139-155
Availability location Soils, Water and Environment Research Institute, ARC
Availability number
Organization Name
City Cairo
serial title مجلة الكيمياء البيولوجية والعلوم البيئية
Web Page
Author(s) from ARC
Agris Categories Soil erosion, conservation and reclamation
AGROVOC
TERMS		 Chemicophysical properties. Efficiency. Gypsum. Helianthus annuus. Industrial wastes. Irrigation scheduling. Saline sodic soils. Soil conditioners. Sulphur. Water use.
Publication Type Journal
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