Effect of spraying with a combination of nano-fertilizers on some chemical characteristics of two pomegranate cultivars under salt stress conditions

Abstract

The research was conducted in the plant canopy of the Department of Horticulture and Landscape Engineering / College of Agriculture / University of Karbala, from the beginning of March to October 2021, to find out the effect of spraying a combination of nano-fertilizers on vegetative and root growth and the chemical content of seedlings of two pomegranate cultivars under salt stress conditions. The first factor was spraying with several concentrations of the combination of nano-fertilizers (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 gm liter - 1 IQ combi). As for the second factor, the variety (Wonderful, Slimy), and the third factor, irrigation with three different salt concentrations (1.7, 5, and 10 dSm-1). The results were analyzed using the Genstat statistical analysis program, and the averages were compared using the least significant difference (L.S.D) under the probability level of 0.05.

The results can be summarized as follows

1. The treatment with a combination of nano-fertilizer at a concentration of (1.5 ml L-1 Optimus plus + 1 g L-1 IQ combi) had the highest percentage in the leaves of (chlorophyll, carbohydrates, nitrogen, phosphorus, potassium, calcium, zinc and iron) as recorded While the treatment (0 ml liter - 1 Optimus plus + 0 g liter - 1 IQ combi) recorded the highest percentage of (proline, sodium and chloride) in the leaves.


2. The cultivar Wanderfel outperformed the cultivar Salimi and recorded the highest percentage in the leaves of (chlorophyll, carbohydrates, proline, phosphorous, potassium, calcium, zinc and iron), while the cultivar Salimi gave the highest percentage of (nitrogen, sodium and chloride) in the leaves.


3. Irrigation treatment with electrolyte water (1.7 dSm-1) showed the highest percentage of (chlorophyll, carbohydrates, nitrogen, phosphorus, potassium, calcium, zinc and iron) in the leaves, while irrigation with water (10 dSm-1) gave the highest percentage. In the leaves of (proline, sodium and chloride).


4. The double and triple interactions between the study factors led to a clear significant superiority in the studied traits compared to the comparison treatment, as the triple interaction treatment (1.5 ml liter - 1 Optimus plus + 1 gm liter - 1 IQ combi, the variety Wanderfel and the salinity of irrigation water with a concentration of 1. 7 decimens M-1) was significant by giving the highest percentage of (chlorophyll, carbohydrates and iron) in the leaves. The treatment (1 ml liter-1 Optimus plus + 0.5 gm liter-1 IQ combi, the cultivar Wanderlust, and irrigation water salinity at a concentration of 10 dSm-1) recorded the highest content of (proline) in the leaves, while the treatment (0 ml liter-1 Optimus plus + 0 gm l-1 IQ combi and cultivar Salimi and the salinity of the irrigation water at a concentration of 10 dSm-1 gave the highest percentage of (sodium) in the leaves, and the treatment excelled (1.5 ml l-1 Optimus plus + 1 gm l-1 IQ combi and The cultivar, Salimi, and the salinity of the irrigation water at a concentration of 1.7 dSm-1) gave the highest percentage of (Zn) in the leaves.