lot, earth, soil
壌 centers on earth or soil, especially in the sense of a plot or parcel of land. The 'lot' meaning is a specific application of that earthy ground.
壌 combines 土 (earth) with 㐮, which likely contributes the sound and may relate to an older idea of soft or fertile soil. The exact historical development of 㐮 is uncertain.
The left side is earth 土, and the right side 㐮 looks like a complex arrangement of clothes 衣 and other parts. Picture a plot of rich soil where clothes are spread out to dry, marking the earth as a useful lot.
For ジョウ, imagine a farmer named Joe who owns a plot of earth: Joe -> ジョウ, and his land is the soil he works.
soil
Pyongyang (North Korea)
soil animal; soil life; soil biota; edaphon
soil science; pedology
soil amelioration; soil improvement
soil moisture
soil moisture; soil water
soil pollution
Soil Contamination Countermeasures Act
soil runoff
soil erosion
soil bacteria
soil fertility
soil
heaven and earth
as eternal as heaven and earth
Pyongyang Time; PYT; Standard Time of the Democratic People's Republic of Korea
to stamp on the ground rhythmically while singing
Japanese Society of Soil Zoology
Japanese Society of Soil Microbiology