The aim was to evaluate the application of three non-essential beneficial elements such as vanadium (V), selenium (Se), and cerium (Ce) during tomato and pepper seedling production in order to improve their quality. Low concentrations of these elements may promote plant growth and improve tolerance towards stress, and they could also increase the nutritional value of vegetable foods. The seeds from tomato and pepper were sown in germination trays containing commercial substrates, and the experiment was established in a greenhouse. Twenty days after seeding, one weekly irrigation was performed with 50% Hoagland nutrient solution (control) plus either 3, 5, or 10 μM NH 4 VO 3 ; 5, 10, or 20 μM Na 2 SeO 3 ; and 25, 50, or 100 μM CeCl 3 . After four weekly applications, it was observed that all three V doses (3, 5, and 10 μM) and the lowest Se concentration (5 μM) promoted the growth of both root and shoots, and they increased the dry biomass for both tomato and pepper seedlings. Only the addition of 50 μM Ce promoted tomato seedling growth. Both V and Se increased the content of phenolic compounds on pepper seedlings. These elements may be used for seedling production at plant nursery level in order to ensure their uniformity and quality. It is an innovative tool to ensure maximum yield of crops.
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