Effect of Spraying a Combination of Nano-Fertilizers on some Vegetative and Root Growth Characteristics of Two Pomegranate Cultivars under Salt Stress Conditions

Abstract

The research was conducted in the vegetable canopy of the Department of Horticulture and Landscape Engineering - College of Agriculture - University of Karbala for the period from the beginning of March to October 2021, with the aim of knowing the effect of spraying a combination of nano-Fertilizers on the growth of seedlings of two pomegranate cultivars under salt stress conditions. The first factor was spraying with a combination of nano-fertilizers at a concentration of (0 ml. L-1 Optimus plus 0 g. L-1 IQ combi and 1 ml. L-1 Optimus plus + 0.5 g. L-1 IQ combi and 1.5 ml L -1 Optimus plus + 1 gl -1 IQ combi). As for the second factor, the variety (Wonderful, Slimy), and the third factor, irrigate with three different salt concentrations (1.7, 5, and 10 dS.m-1). The results can be summarized as follows: (1) The treatment with the combination of nano-fertilizer at a concentration of (1.5 ml.L-1 Optimus plus + 1 gL-1 IQ combi) had the highest rate in the trait (plant height, stem diameter, leaf area, dry weight of shoot and root system, and fresh weight of shoot group). root, and root length) and the treatment (1 ml.L-1 Optimus plus + 0.5 gL-1 IQ combi) recorded the highest rate in the number of leaves characteristic. (2) The cultivar Wanderfel outperformed the Salimi cultivar and recorded the highest increase in the rate of (plant height, stem diameter, number of leaves, leaf area, dry weight of shoot and root, fresh weight of shoot and root, and root length). (3) Irrigation treatment with electrolyte water (1.7 decimens.m-1) showed the highest values for vegetative and root growth characteristics (plant height, stem diameter, number of leaves, leaf area, dry weight of vegetative and root, fresh weight of vegetable and root, and root length). (4) The double and triple interactions between the study factors led to a clear and significant superiority in the studied traits compared to the comparison treatment. 7. Decimens.m-1) was significant, giving the highest rate in most of the vegetative and root traits. The treatment (1 ml.l-1 Optimus plus + 0.5 gl-1 IQ combi, the cultivar Wanderful and the salinity of the irrigation water at a concentration of 1.7 dSm-1) recorded the highest average number of leaves.