The dedication from the dry mass of all substrate pots by drying inside of a ventilated oven at 60°C (Heraeus, Hanau, Germany) for 7 days originally and close of lettuce cultivation authorized the calculation in the mineralized organic make any difference in the experiment. This technique was utilized based on https://spencerkbpcr.blogvivi.com/33626255/the-best-side-of-ventilation-system