The willpower from the dry mass of all substrate pots by drying in a ventilated oven at sixty°C (Heraeus, Hanau, Germany) for seven days at first and close of lettuce cultivation permitted the calculation with the mineralized natural matter through the experiment. This process was applied based on the method https://marjaneya603nta3.gynoblog.com/32254297/the-best-side-of-greenhouse-accessories