Eruca Sativa L. response to planting method and irrigation frequency under saline water application

Arugula as an adapted plant to the abiotic environmental stresses uses for poor soil improvement and exploitation. In this research the effect of saline water application with different irrigation water frequencies (10, 20 and 30 days) on arugula plant under three planting methods (basin. on-ridge and in-furrow) was studied. The experiment arranged in factorial scheme under a complete block design in 2018-19 in Ardakan Unversity Agricultural Experiment Station with three replications. Results showed that the effect of planting method was dominant in justifying changes in measured traits compared to the irrigation interval. Arugula had better growth (regarding height, number of pod per unit area and plant, number of seeds per pod, 1000-grain weight, biologic- forage- and seed-yield) under in-farrow planting method. Although, increasing irrigation interval up to 30 days decreased all growth parameters; however, increasing irrigation frequency with changing planting method form the conventional basin to in-furrow planting method significantly promoted growth traits and forage (as 73%) seed (as 88%) yield. Furthermore, although in term of absolute amount of forage (as 24445 kg/ha) and seed (as 1484 kg/ha) production, in-furrow planting under 10 -days irrigation frequency is the recommendable treatment; however, the final selection of planting method depends on the economic analysis.