Hydraulic studies on surge flow furrow method by using gated pipe system for clay loam soill [electronic resource].

Includes references.

The study was conducted to evaluate surge flow technique comparing with continuous irrigation. This study was conducted at the Experimental Farm of Faculty of Agriculture. Ain Shams University, at Shalaqan village I Ian from EI-Kanater EI-Kairea District, Kaliobia Governorate. Egypt. Two fUrrows length were selected 70 and 90m with and 0.75 m furrow spacing and gated pipe was usedfor irrigation on 0.2% average slope on a clay loam soil. The field experiment comprises one continuous treatment and three surges( 3 , 4 and 5) treatment with two inflow rates of 1.67 and 2.1 I/s, and two cycle ratios (CRI = 0.33 with /5 min on and 30 min off) and ( CR2 =0.50 with 15 min on and /5 min off), along with two steady flow treatments with the same inflow rates in order to analyze the advance and recession phases, wetted depth, cumulative infiltration , application efficiency, storage efficiency, distribution uniformity, absolute distribution uniformity, deep percolation ratio and tail water ratio. Results indicated that surge flow treatments advanced rate faster than the respective continuous flow treatments. Surge treatment had a better application efficiency and distribution uniformity than the continuous treatments. On other hand the continuous treatments had better storage efficiency than surge treatments. The maximum deep percolation loss (41%) was observed in continuous treatment.

Summary in Arabic.

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