How long would it filch a cultivator to produce crops within a 1 mile radius beside out machinery?
It doesn't matter because if the farmer started to pick the crops when they were ripe, he or she wouldn't be able to pick them adjectives before they started to rot in the paddock.
The farmer would need abundantly of help. The more help, the smaller amount time it would take.
It depends on what crop you have contained by mind. With a scythe a farmer can harvest hay or crumb quite rapidly. Indeed, that be the way it was done for heaps many years. If he was digging potatoes or picking strawberries it would filch a bit longer.