Maximizing water use of sugar beet under irrigation systems [electronic resource].

Includes references.

Field experiments were conducted in an area of 1.50 fed during 2009- 2010 the season at Experimental Farm of the Faculty of Agriculture, Zagazig University, Sharkia Governorate, at Khattara region under sandy soil conditions to study the effect of irrigation systems (suiface trickle and subsuiface leaky pipes) , irrigation water applied (100%, 75% and 50% of IRa); materials reducing water losses (polymers, antitranspiration and no materials) and soil mulching (black plastic, transparent plastic and bare soil) on weed control, sugar beet production and quality, saving water, water use efficiency, production cost per yield and net profit under Egyptian conditions. The results obtained can be summarized as follows: The highest values of total actual irrigation water requirements (2355 m3 /fed) and weed control (350 kg/m2 ) were found under trickle irrigation, no materials, bare soil and 100% of IRa. The highest sucrose per~ntage value was found by using subsuiface irrigation. The highest root and sugar yield values of 23.36 and 4.4 Mg/fed were found by using subsuiface irrigation, 100% of IRa, polymers and black plastic mulch. The highest water use efficiency values was 13.58 kg/m3 for root yield and 2.64 kg/m3 for sugar yield respectively, were remarked under 75% of IRa, subsuiface irrigation, polymers and black plastic mulch. The highest net profit and the lowest production cost per yield values were 6977 LE/fed and 48.5 LE/Mg by using subsuiface irrigation, 100% of IRa, polymers and black plastic mulch.

Summary in Arabic.

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