EFFECT OF TWO SPRINKLER IRRIGATION TYPES ON WHEAT I-UNIFORMITY,VEGETATIVE GROWTH AND YIELD

It is common to use the sprinkler irrigation system on large-scale irrigation intensive crops in the Egyptian desert. The cultivation and production of wheat crop depends basically on sprinkler irrigation system in Egypt. Two field experiments were conducted in two successive season (2011/2012 and 2012/2013) at two sites El-EmamMalek village and NRC Farm (according to the cultivation periods), Nubaria, Behaira Governorate to study the effect of two types of sprinkler irrigation system and three water amount on vegetative growth, WUE, and yield of wheat crop (Triticumaestivum L. cv. Gemmaiza 9, Varity). The results could be summarized as following:Uniformity coefficients (% UC) had been practical evaluated in the two experimental farmsand the results were 86.7 and 74.0 % under using Permanent and Simi portable sprinkler irrigation systems, respectively.Results of Distribution uniformity (% DU) were 78.8 and 58.7 % under Permanent and Simi portable sprinkler irrigation systems, respectively. The effects of the sprinkler irrigation type on all studied parameters were significant at the 5% level except seed index. TheSemi PortableSystem(SPS)resulted in undesirable mechanical damage of some wheat plants.Moving the lateral lines in SPS system after irrigation each 4 days in a wet soil caused soil compaction, poor aeration and root growth impedance.Decreasing the irrigation water from I 100 to I 50 had positive effects on water use efficiency of grain yield (WUE)g and negative ones on all other parameters.Moving the lateral lines in SPS system after irrigation each 4 days in a wet soil caused soil compaction, poor aeration and root growth impedance.Differences in most parameters among treatments were significant at the 5% level.