الفهرس 
Sources of irrigation water in EgyptOnly 14 pages are availabe for public view
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Abstract
The experiments were conducted in the laboratory of Agricultural and Bio-Systems Engineering Department, Faculty of Agriculture, Menoufia University, in Shibin El kom, Egypt. The latitude and longitude
of the experimental location were 30°33‵31‶N and 31°00‵36‶E. The main
objective of this study was to evaluate mainly emitter clogging percent and
its hydraulic parameters under different levels of irrigation water quality. These levels were Nile water, treated drainage water and drainage water.
A lateral line of Poly Ethylene (PE) with 45 m long and 16 mm diameter was used for testing the hydraulic performance of three emitter type which were (long path, short path and pressure compensating emitters). Every lateral line contained 90 emitters of the same type with nominal flow rate (4L/h) and 100 kPa operating pressure. The spacing between laterals was 0.75m, and the spacing between emitters was 0.5m. Two filtration process (sand filter and sand filter with screen one) were tested.
The management of drip irrigation system was focused mainly to reduce emitters clogging and evaluate the hydraulic performance of the drip irrigation system based on water quality, emitter types, lateral line length, and filtration process, the effect of all these Parameters were derived.
Long path emitter recorded the highest values of the studied parameters, where the maximum emitter clogging percent were (47.44% at 880h, 47.3% at 780h and 48.6% at 680h) for the three levels of water quality. The increasing emitter clogging percent were (5.1, 6.1 and 7.1%) for the Nile water, treated drainage water and drainage water, respectively. The other two tested emitter gave (8.5, 9.4 and 11.1%) and (7.2, 7.4 and 8.2%) for short path emitter and pressure compensating emitter at the first filtration process, respectively.
The operating time was increased in the rate of (102, 77 and 74%) for long path emitter, about (74, %) for short path emitter and (42%) for pressure compensating emitter for the levels of water quality (Nile water, treated drainage water and drainage water).