derske lujvo

s1=d1 is soil science [science about earth/soil] based on methodology s3.

dertu2, dertu3 and saske2 subsumed. Soil science studies the soil that occupies the pedosphere, one of Earth's spheres. This is not the same as geology (the lujvo for this should mean planetary+composition+science). The two main branches of soil science are pedology (=terderske; the study of soil in its natural setting) and edaphology (the study of soil in relation to soil-dependent uses). See also tedyske, rokske and kunske.


In notes:

kunske
s1=t1 is mineralogy [science about minerals] based on methodology s3.
rokske
s1=r1 is petrology [science about rock/stone] based on methodology s3.
tedyske
s1=t1 is Earth science based on methodology s3.
terderske
s1=t1 is pedalogy [science about soil composition] based on methodology s3.