ZnO nanoparticles as potential fertilizer and biostimulant for lettuce

• DOI: 10.1016/j.heliyon.2022.e12787
• Publication Date: 2023-01-06T02:11:20Z
• Authors: Carlos Alberto Ga...; Antonio Juárez-Ma...; Susana González-M...; Marcelino Cabrera...; Gregorio Cadenas-...; América Berenice ...; Libia Iris Trejo-...; Gonzalo Tortella; Adalberto Benavid...
• Keywords: APX; Perlite; Biofortification

Zn is an indispensable nutrient for crops that usually presents low bioavailability. Different techniques have been proposed to improve the bioavailability of Zn, including use nanofertilizers. The objective study was evaluate applications drench (D) and foliar (F) ZnO nanoparticles (NZnO) compared those ionic Zn2+ (ZnSO4) in lettuce. plants cv. Great Lakes 407 produced pots 4 L with perlite-peat moss (1:1) under greenhouse conditions. treatments consisted NZnO replaced total provided a Steiner solution, as follows: (100%D) (control); (50%D+50%F); (100%D); (75%D); (50%D); (75%F) (50%F). Four were made frequency 15 days. 75 days after transplant (DAP), fresh dry biomass, chlorophyll a, b, β-carotene, phenolics, flavonoids, antioxidant capacity, vitamin C, glutathione, H2O2, protein, enzymatic activity PAL, CAT, APX, GPX evaluated. mineral concentrations (N, P, K, Ca, Mg, S, Cu, Fe, Mn, Mo, Ni, Si) leaves roots also determined. results showed that, Zn2+, promoted increases biomass (14-52%), chlorophylls (32-69%), compounds such C. enzymes like CAT well concentration Si increased NZnO. A better response found most variables equivalent 50-75% applied conventionally. These demonstrate replacement possible, promoting fertilizer efficiency nutraceutical quality