Ginger Extract and Fulvic Acid Foliar Applications as Novel Practical Approaches to Improve the Growth and Productivity of Damask Rose

Abstract

Plant biostimulants (BIOs) have been identified as among the best agricultural practices over the past few decades. Ginger extract (GE) and fulvic acid (FA) are a new family of multifunctional BIOs that positively affect development processes in plants. However, the underlying mechanisms that influence these development processes are still unknown. The objective of this study was to determine how GE and FA affect the plant growth and productivity in damask rose. Furthermore, the mechanisms of these BIOs that regulate the performance of this plant were investigated. Damask rose plants were foliar-sprayed with GE (5, 10 and 15 mg L−1) or FA (1, 3 and 5 g L−1), while control plants were sprayed with tap water. The results showed that GE or FA foliar applications enhanced plant height and branch number much more than the control; however, FA treatment was more effective than GE. Intriguingly, flower number, flower yield, relative water content, and total chlorophyll content were all improved by either GE or FA, paying attention to reducing the blind shoot number per plant. Relative to the control, foliar application with 15 mg L−1 GE or 3 mg L−1FA increased the flower number by 16.11% and 19.83% and the flower yield per hectare by 40.53% and 52.75%, respectively. Substantial enhancements in volatile oil content and oil yield were observed due to GE and FA treatments, especially with the highest concentrations of both BIOs. The treatments of GE and FA considerably improved the total soluble sugars, total phenolic content, total anthocyanin content, and total carotenoid content, more so with FA. Additionally, the contents of N, P, K, Mg, Fe, and Zn elements were also enhanced by applying either GE or FA, especially at higher levels of both BIOs. In sum, our findings illuminate the potential functions of exogenous application of GE and FA in improving the growth, flower yield, and volatile oil yield in damask rose through enhancing the phytochemical and nutrient profiles. Applications of GE and FA can, thus, be a promising approach for enhancing the productivity of damask rose.

Fulvic acid foliar application: a novel approach enhancing antioxidant capacity and nutritional quality of pistachio (Pistacia vera L.)

“…In the present study, the application of fulvic acid at various concentrations led to an increase in the total phenol content of pistachio nuts, with 1.5 g L − 1 fulvic acid showing the highest efficiency. This finding aligns with studies conducted by Ali et al [ 14 ] on damask rose, Aminifard et al [ 26 ] on pepper, and Asami et al [ 27 ] on strawberries. Plants often face a resource allocation challenge between growth and defense mechanisms, resulting in a competition for precursors between phenolic compounds and proteins [ 26 ].…”

“…The results demonstrating an enhancement in carbohydrate content in fulvic acid-treated samples are in line with findings on damask rose [ 14 ], pepper [ 26 ], and tomato [ 53 ]. Total soluble content is known to be correlated with carbohydrate amount, and the positive influence of fulvic acid on total sugar content suggests its ability to enhance carbohydrate content.…”

“…Fulvic acid has also demonstrated its potential to enhance fruit quality and yield in tomato plants when applied as a foliar spray. Furthermore, in Damask rose, the use of fulvic acid, along with ginger extract as a foliar spray, resulted in increased content of total phenols, anthocyanin, carotenoids, and essential elements such as Fe, Zn, Mg, N, P, and K [ 14 ].…”

Impact of some natural extracts on rooting performance of coratina olive cuttings

“…It used to extract many chemical compounds and dissolve phenols (GHASEMZADEH et al, 2010). Water is frequently used as a solvent in different previous researches (MOHAMMED, 2021;MUSTAFA et al, 2021;ALBARIDI et al, 2022) while, ethanol as solvent has little attention (MOHAMMED, 2021;ALI et al, 2022). On the contrary, there is no information about vinegar as solvent for some natural substances like moringa, willow, ginger, licorice, cinnamon, bread yeast, garlic and humic acid which some of them which are extracted with water or vinegar may use in organic farm in the future.…”

The biological and biochemical composition of wheat (Triticum aestivum) as affected by the bio and organic fertilizers

“…Fulvic acid can arrange plant growth development by ameliorating the photosynthetic rate and reducing transpiration conductance [62,63]. Moreover, it is also important to boost plant growth by raising the fertilizers utilization efficiency [44], reducing the heavy metal influence [64], and increasing the yield by improving the soil's nutritional status [65].…”