Translations:Benutzer:Arian/Klett-Mini-Test/1124/en

The fourth phase takes the longest time until full earthing is reached. It lasts the longer, the richer in raw fibre the starting material is. In the BKV (cow/horse manure) this stage was reached after approximately four months. Worm activity began in the 7th and ended in the 13th week. The temperature held itself nearly constant at approximately 25 °C, on average approximately 4 to 5 °C above the fluctuations of the outside temperature.