The resolve with the dry mass of all substrate pots by drying in a very ventilated oven at sixty°C (Heraeus, Hanau, Germany) for seven days at the beginning and stop of lettuce cultivation allowed the calculation of your mineralized organic and natural matter over the experiment. This method was used https://eduardofvjzl.ttblogs.com/12658081/the-2-minute-rule-for-ventilation-system