acre
agriculture
background
chernic
cultural countryside
earning
efficient
farming
farmland
field
fruitful
good harvest
harvest
high
humic
humic layer
humus
manmade landscape
nutrient
organic layer
plant nutrient
plough
ploughed
ploughing
plow
plowed
plowed field
plowing
producing
productive
rank
rankly
rich
soil
soil characteristics
soil properties
taxonomy