STUDIES ON THE COMPARATIVE EFFICIENCY OF SOME RECLAMATION MATERIALS FOR THE SODIC SOIL

Abstract

Field experiment was carried out on reclamation of a saline sodic silty clay soil El-Salam Canal water (EC 1.5 dSm~\ SAR 7.1, Adj. SAR 16.0) was used in a field in south EJ-Hosoiniya Plain, north east of Delta, Sharqueya Govemorate. The aim was to asses the efficiency of reclamation using four amendments, each at two rates. Materials were gypsum "G" (8.0 and 10.0ton/fecJ) sulphur "S" (1.5 and 1.9 ton/fed.), lime "L" {4.6 and 5.8 ton/fed), and manured lime "ML" (4.6 + 10.0 ton/fed) and (5.8 + 10.0 ton/fed) for each material, rate 1 represents the gypsum requirement GR, and rate 2 represents 1,25 GR. After reclamation, rice was grown and yield was measured. EE-Salam water was used adopting intermittent leaching for 2 cycles. Each cycle comprised applying 600 m3/ fed followed by 900 mVfed with 2 weeks between water applications per each cycle, and one month between the 2 cycles.