The effect of plasma-treated nutrient solution on yield, pigments, and mineral content of rocket (Diplotaxis tenuifolia) grown under different nitrogen fertilization levels

The non-thermal plasma (NTP) technique has been suggested as a sustainable horticultural practice to promote biomass accumulation, nutrient uptake, N metabolism, and disease prevention in plants. In particular, the potentiality of this technique to promote the natural accumulation of nutrients into plants deserve to be explored as input saving is strongly recommended in the horticultural sector. The aim of the work was to evaluate the effect of the interaction between NTP and N fertilization on crop yield and quality. For this purpose, the NTP was used to treat the nutrient solution supplied to wild rocket plants grown hydroponically in a greenhouse combining plasma treatment with different levels of N in the nutrient solution.