The effect of Deficits Irrigation Method of Alternative Furrow Irrigation on Yield of Sweet Corn

Water deficit and dwindling water resources are the most important factors that limit agricultural products in the world and Iran. To study the effect of deficit irrigation by method of furrow irrigation grain yield and yield components of sweet corn, an investigation is conducted in a randomized complete block design in 4 treatments with four replications, in research farm of the faculty of agriculture of birjand, including: 1- an alternative furrow irrigation (AFI) 2- a fixed furrow irrigation (FFI) 3- double furrow irrigation in 14 time duration (DFI) 4- a critical furrow irrigation of all tracks treatment control (CFI) time constant irrigation to 7 time duration were considered. AFI means that one of the two neighboring furrows was alternately irrigated. FFI means that irrigation was fixed to one of the two neighboring furrows. CFI was the conventional method where every furrow was irrigated during each irrigation. The time for irrigation is calculated from the infiltration equation of Kostiakov Lewis and other treatments of deficit irrigation are planned on this basis. In this test, crop yield and 15 effective treats was analyzed are analyzed. The results of variance analysis showed a significant difference at the 1% level different irrigation types irrigation in measured treats . Alternative furrow irrigation treatment was a better solution for water saving in arid and semi-arid region with 50% saving compaire to control treat only with 6.5% reduction on yield.

Zeamaysvarsaccharata, deficit irrigation, alternative furrow irrigation, grain yield