mycorrhizosphere

noun 0.794

rhizobium

noun 0.675

pedosphere

noun 0.669

rhizobacterium

noun 0.661

rhizome

noun 0.624

biosphere

noun 0.610

ecosphere

noun 0.604

rhizodeposition

noun 0.583

geosphere

noun 0.579

lithosphere

noun 0.570

rhizomania

noun 0.564

soil

noun 0.558

ergosphere

noun 0.550

hydrosphere

noun 0.549

anthroposphere

noun 0.545

noosphere

noun 0.544

photosphere

noun 0.541

mycorrhiza

noun 0.540

rhizotomy

noun 0.538

soil microbiology

noun 0.538

troposphere

noun 0.531

ionosphere

noun 0.529

soil science

noun 0.528

horosphere

noun 0.521

topsoil

noun 0.518

littoral zone

noun 0.517

pericycle

noun 0.515

root rot

noun 0.515

cryosphere

noun 0.507

biozone

noun 0.506