The dedication from the dry mass of all substrate pots by drying in the ventilated oven at sixty°C (Heraeus, Hanau, Germany) for 7 times at the beginning and end of lettuce cultivation allowed the calculation with the mineralized organic issue during the experiment. This method was used in accordance with https://general-purpose-variable20976.is-blog.com/39459862/not-known-facts-about-greenhouse