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• Microgreen leaf vegetable production by different wavelengths

  79-84

  Ágota Kovácsné Madar

  Tímea Vargas-Rubóczki

  Mária Takácsné Hájos

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  224

  Microgreens are becoming more popular in gastronomy, especially as a salad ingredient. In this study, two plant species belonging to the cabbage family were grown as microgreens, namely red cabbage and broccoli. Three different light-emitting diodes (LEDs) were used in the experiment, blue, red, and combined (blue:red) lighting. The experiment was carried out by 118 µmol^-2 s^-1total Photosynthetic Photon Flux (PPF), LED lighting was applied for 16 hours a day. Blue light primarily stimulates leaf growth, while red light promotes flowering. In our experiment, blue and combined lighting favorably affected plant development, yield (~3000 g m^-2), chlorophyll-a (~8.0 mg g^-1), and carotenoid content (9.0 mg g^-1). However, the red light resulted in reduced harvest yields (~2200 g m^-2), chlorophyll-a (~6.0 mg g^-1), and carotenoid content (~7.0 mg g^-1). The development of red cabbage was favorably influenced by the blue spectrum, while the combined spectrum favorably influenced the development of broccoli.