Effect of Quantity and Quality of Irrigation on Quantitative Traits of Rosmarinus Officinalis L.

In order to investigate the quantity and quality of irrigation on quantitative traits of Rosmarinus Officinalis L., an experiment was conducted in center of seed and plant production of IranShahr municipality in 2017. The treatments were laid out in single-split strip plots based on randomized complete blocks design with four replications. The treatments were comprised of irrigation regimes consisted of four irrigation levels (100, 85, 70 and 55 percent water replacement) in main plot and sub plot consisted of three water quality (groundwater, wastewater and integrated irrigation (50 percent with groundwater and 50 percent with wastewater)). Results showed that dry weight, number of shoots, plant height and water productivity in irrigation with wastewater increased 13.2, 19.3, 18.6 and 13.3 percent respectively and irrigation with integrated irrigation increased 4.1, 5.9, 5.4 and 3.8 percent respectively compared with irrigation with well water. Also in comparison to 100 and 85 percent water replacement, parsimony of water usage equal 348 m3 (15 percent) achieved. Moreover dry weight, number of shoots and plant height decreased 4.6, 6.9 and 7.1 percent respectively but water use efficiency increased 11.3 percent. According to the results, 85 percent water replacement with wastewater, in addition to saving water consumption, provides better use of soil moisture and sunlight. Thus this treatment can be considered as suitable approach to cope with the water crisis and achieve a sustainable agriculture.