Deficit irrigation effects on sweet corn (Zea mays saccharata Sturt) with drip irrigation system in a semi-arid region: I. Water-yield relationship

摘要: This study was conducted to determine appropriate irrigation frequencies and water-yield relationship for sweet corn irrigated by drip system in a semi-arid region. The research carried out at the Agricultural Research Station of Harran University Sanliurfa, Turkey, 1998 1999. In study, water applied as 100, 90, 80 70% evaporation from Class A Pan corresponding 2-, 4-, 6-and 8-day frequencies, respectively. Irrigation crops ranged between 610 876 mm 1998, while 612?889 highest values total use efficiency (TWUE) were found be 1.38 1.24 kg m-3 4-day frequency 1999, (IWUE) determined 1.66 1.59 6-day Crop response factor (ky) 0.76 1.22 0.96 1.29 Fresh ear yield, based on statistically significant (**P<0.01) both years. fresh yields 13.66 13.19 t ha-1 2-day minimum 8.55 7.29 with Yield reduced deficit results this indicate that frequency, 100% ET application system, will optimal grown regions similar Turkey where work conducted. Author Keywords: Sweet corn; Deficit irrigation; Drip frequency; Water-yield