noun
rich soil; fertile land
Refers to soil or land that is naturally fertile and good for cultivation. Somewhat literary or technical; in everyday speech, 肥沃な土壌 or 肥えた土地 are more common.
この地域は沃土に恵まれ、農業が盛んだ。
This region is blessed with fertile soil, and agriculture thrives.
沃土を求めて人々は新しい土地へ移住した。
People migrated to new lands in search of fertile ground.
The kanji 沃 means 'fertile' or 'to irrigate', and 土 means 'soil'. The compound 沃土 directly conveys 'fertile soil'. The reading よくど is the on'yomi for both characters.