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In this greenhouse experiment conducted at one of Baghdad's nurseries during the 2018-2019 growing season, we investigated the impact of varying concentrations of well water (ranging from 0 to 4.3 dS/liter) and proline acid (at concentrations of 0, 10, 20, and 30 ppm) on key indicators of vegetative growth and yield components in the Tammuz variety of wheat plants. Employing a completely randomized design with three replicates, we observed a significant decrease in vegetative growth and yield components as irrigation water levels increased from 0 to 4.3 decimen/liter. Interestingly, foliar spraying with proline acid exhibited a noteworthy increase in both growth indicators and yield components. Furthermore, our results highlighted the mitigating effects of proline acid application on the negative impacts associated with high concentrations of irrigation water. This underscores the potential of proline acid as a beneficial intervention to counteract adverse effects on various growth parameters and yield components in wheat plants under high irrigation concentrations.
Tamara Sabah Hadi (Sun,) studied this question.