Studying the effect of some technical indicators on the performance of the semi-fixed sprinkler irrigation system

Abstract

The study was conducted to evaluate performance of semi-permanent sprinkler irrigation system . The experiment included main line with three length (10-100) ,(100-190), And (190-280) M,which represent main plot . sub line in three length (0-60) , (60-120) , and (120-180)M,which represent sub plot . Uniformity coefficient (VC%) , distribution uniformity (Du1/4) , efficiency of application (Ea%) and over all efficiency of the system(OE%) were studied in this experiment. Split plot design within randomized complete block was used . Result can be summarized as follow: Main line in length (10-100)M recorded best UC, Du 1/4 ,Ea and OE % which give (77.3 ,70.7 , 85.7 ,and 67.3 )% respectively . Also the sub length (0-60) M gave higher Vc, ,Du and Ea % Which recorded ( 76.9 ,66 ,86.7 ,and 66.5 %) respectively . The interaction between main length (10-100 ) M and sub length(0-60) And (60-120)M gave higher (Vc) then recorded (82 and 80.3 %) respectively Also they gave best ( Du1/4 ) which recorded (72 and 71 % ) respectively In parameter (Ea % ) the interaction between sub line ( 0-60 )M and main line In both length ( 10-100 ) and ( 100-190 m) gave best (Ea%) which is (88 and 87) Respectively , in additional the main length ( 10-100m ) and sub (0-60m) Recorded best (OE%) which (71.7 %) .