Economic evaluation of grain maize yield in surge and alternate deficit irrigation conditions

in order to determine the economic evaluation of Grain Maize crop behavior in relation to Surge and alternate Deficit irrigation strategy, a research in Jaydar plain of Poldokhtar city during the year 2021-2022 was done. The statistical design of the research was Factorial design in a randomized complete block design Which has two factors at 5 and 3levels. Factor A (five furrow irrigation methods) including conventional irrigation (C), Surge irrigation with one-to-one flow wave cycle ratio until advance time is complete (S_1), Surge irrigation with two-to-one flow wave cycle ratio until advance time is complete (S_2) , fixed alternate irrigation (FF) and variable alternate irrigation (AF) as well as factor B (three irrigation regimes) including 100% water requirement (I_100), 80% water requirement (I_80) and 60% water requirement (I_60). The number of experimental treatments was 15 and the number of replications was 3 replications. The results showed that in irrigation methods, the highest gross and net profit in relation to the amount of water consumed is related to the s_1 surge irrigation method respectively with values of 20.24 and 9.87 thousand Rials per cubic meter. In different irrigation regimes, the highest gross and net profit in relation to the amount of water consumed respectively is related to the (I_80) with the amount of 19.46 thousand Rials per cubic meter and (I_100) with the amount of 8.29 thousand Rials per cubic meter was determined. Finally for different irrigation treatments, the highest gross and net profit in relation to the amount of water used was related to the treatment S_1 I_60 respectively is 22.53 and 10.7 thousand Rials per cubic meter.