The four different treatments of experiment A were: Microbial poor
vermicompost and no earthworms (1-PV/NW), microbial poor
vermicompost with earthworms (2-PV/WW), microbial-rich
vermicompost and no earthworms (3-RV/NW), and finally
microbial-rich vermicompost with earthworms (4-RV/WW).