Higher plants form their cenosis later than the process of the development of the microbial eco-system.
Grassy plants are the sources of organic matter for the Fabricated Soil (FS) as well as sources of nitrogen
substances which were formed in the plant nodules of roots of Fabaceae, legumes. About 20% of nitrogen could
come to FS thanks to roots nodules activity (Alfa Alfa, clovers and other). The composition of plant patterns on
FS could be changed during the season.
