Rendzina A type of brown earth soil typical of humid to semi-arid grasslands over calcareous rocks. The rendzina is rich in lime and has an upper humus-rich horizon.
A long-term field experiment was carried out to study the effect of fertilization on the organo-mineral complexation and the combined forms of humus of phaeozem in Jilin Province, China.
But it is also known as " Alabama jumper, " " Jersey wriggler, " and " crazy worm." Unlike other usual North American earthworms, these highly active worms eat large amounts of humus.