Nutrient Use in Vertical Farming: Optimal Electrical Conductivity of Nutrient Solution for Growth of Lettuce and Basil in Hydroponic Cultivation

During the past few decades, vertical farming has attracted a lot of interest as an alternative food production method. Vertical farms use engineered growth environments and hydroponic cultivation techniques for growing plants indoors. One important factors in different is amount nutrients, which can be measured electrical conductivity (EC). Studying optimal EC avoiding nutrient loss deficiency farms. In this study, we investigated effect five levels (2, 1.2, 0.9, 0.7, 0.5 dS m?1) Hoagland solution on development basil cultivar ‘Emily’ lettuce ‘Batavia-Caipira’. environmental parameters were kept fixed using automatic dosing machine. The experiment was done ebb–flow technique with temperature 20 ± 1 °C, relative humidity 50–60%, CO2 concentration 450 ppm, pH = 6, PPFD (photosynthetic photon flux density) 215 5.5 ?mol m?2 s?1, photoperiod 16:8 h (day/night). Each treatment replicated four times. We studied effects several (including dry fresh weight leaves roots, number leaves, leaf area) well chlorophyll nitrogen leaves. According to results, among treatments have been significantly higher 1.2 0.9 m?1. These values are lower than recommended value given optimum previous studies. However, show trends full strength 2