Neodymium Exerts Biostimulant and Synergistic Effects on the Nutrition and Biofortification of Lettuce with Zinc
2025
Imelda Rueda-López | Fernando C. Gómez-Merino | María G. Peralta Sánchez | Libia I. Trejo-Téllez
This research aimed to evaluate the effects of different concentrations of neodymium (Nd: 0, 2.885, 5.770, and 8.655 mg L&minus:1, referred to as Nd0, Nd1, Nd2, and Nd3, respectively) and zinc (Zn: 0.1, 0.2, and 0.3 mg L&minus:1, designated as Zn1, Zn2, and Zn3, respectively), as well as their combined interaction, on the nutritional content of lettuce (Lactuca sativa) cv. Ruby Sky. The seedlings were grown in a floating hydroponic system under greenhouse conditions. After 48 days of treatment, leaf samples were collected to determine their nutrient content. Leaf contents of N, P, Ca, Mg, S, Fe, Mn, B, and Nd were higher with the Nd1 (2.885 mg Nd L&minus:1 + Zn1 (0.1 mg Zn L&minus:1) treatment. The Nd3 (8.655 mg Nd L&minus:1) + Zn3 (0.3 mg Zn L&minus:1) treatment significantly increased the leaf contents of Cu and Zn. The K content was higher in leaves treated with Nd2 (5.770 mg Nd L&minus:1) + Zn3 (0.3 mg Zn L&minus:1). The joint application of Nd and Zn had positive effects on the nutrition of hydroponic lettuce, and Nd promoted the biofortification of lettuce by increasing leaf Zn content.
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