The willpower in the dry mass of all substrate pots by drying within a ventilated oven at sixty°C (Heraeus, Hanau, Germany) for 7 days originally and conclusion of lettuce cultivation authorized the calculation of the mineralized natural matter in the course of the experiment. This process was used based on https://claytonhrbjq.ezblogz.com/64648095/5-simple-statements-about-soilless-cultivation-explained