till, plow, cultivate
耕 centers on working the soil to grow crops: tilling, plowing, and cultivating the land.
耕 combines 耒 (a plow-like farming tool) with 井, which likely contributes the sound and may suggest orderly fields like a well-grid.
The left side 耒 is a plow, and the right side 井 looks like a grid of fields. Picture a plow moving through the grid, tilling and cultivating the soil.
For コウ, imagine a farmer plowing a field while a cow watches nearby: cow -> コウ, and the plow turns the earth.
cultivation; farming
farming; agriculture; cultivation
to till; to plow; to plough; to cultivate
arable land; plantation; farmland
cultivator; tiller
nonfarming land; untilled land
no-till farming
intertillage
cultivator
lying fallow; leaving a field uncultivated
fallow soil; idle field; set-aside; idled plot
power cultivator
spring plowing
working in the field in fine weather and reading at home in rainy weather; living in quiet retirement dividing time between work and intellectual pursuits
uncultivated land
hydroponics
hydroponics; aquaculture; water culture; tank farming
hydroponics
hydroponic plantation
deep plowing; deep ploughing