Cerium Oxide Salicylic Acid Nanoparticles’ (CeO2: SA-NPs) Foliar Application and In-Soil Animal Manure Use Influence the Growth and Physiological Responses of Aloe vera L.

Aloe vera is an economic crop due to the presence of a gel-like substance inside leaves, which contains polysaccharides, vitamins, proteins, fats, and amino acids. There ongoing need for this plant its products diverse food pharmaceutical industries. To meet good agricultural practices, we studied effect manure application (0%, 10%, 20% v/v soil) foliar with distilled water, salicylic acid (SA, 13.8 mg L−1 equivalent 100 µM), cerium oxide nanoparticles (CeO2-NPs, 50 L−1), (CeO2: SA-NPs; µM + L−1) on growth physiological responses vera, factorial experiment was arranged based completely randomized design three replications at Azarbaijan Shahid Madani University, Iran. The results showed that CeO2: SA-NPs soil-based 10% increased dry weight aloin content. highest harvest index, yield, shoots-to-roots ratio, gel weight, chlorophyll b content, phenolics content gel, leaf flavonoids’ as well potassium, magnesium, zinc, iron were obtained by × treatment combination. CeO2-NPs, SA, leaves compared control. Manure (20%) positively affected plant’s phosphorus revealed co-application cow stimulated would be helpful extension sections pioneer farmers.