||No Farm Upgrades
||Crop Rotation (Imp)
|No Wood Upgrade
|Double-Bit Axe (Feudal)
|Bow Saw (Castle)
|Two-Man Saw (Imp)
Since farms take so long to deplete, you'll be spending wood income on other things
in the meantime, so there's no reason to set aside wood to eventually use to
reseed farms. The number of villagers on wood per farm ranges from
0.333 (1 wood villager /3 farms) to 0.077 (1 wood villager /13 farms).
These numbers are so small that you wouldn't realistically keep track of
them in an actual game.