(The word farmers' is a plural possessive. The noun farmers is often used as a noun adjunct as well.)
"The farmers' main concern was the diversion of river water upstream."
(the main concern of the farmers)
"During the range wars, many farmers' houses, barns, and crops were deliberately burned."
(house and barns of many farmers)
the farmer eradicated his weeds.
The fearsome wolves threatened the farmer's livestock.
A farmer uses his pitchfork to gather hay for his cattle.
The farmer yanked on the cow's uttered to get some milk
A farmer uses an auger to move grain from a wagon to a silo.
the negro belonged to the white farmer! :)
The farmer washed his car and other chattels to get rid of the volcanic ash that had settled on them.
The age of the small farmer is past, and now agribusiness dominates the American farming community.
the farmer thought everybody he saw was persnickety except himself, who was the most persnickety of all.
The giant of the castle hoed as he chased Jack.
tentant farmer is one who resides on and farms land owned by its or there landlord.
The teacher showed her class how to read a book. The farmer showed his best bull at the local show.