Originally Posted by
Melkior
The number of fields per farm really depends on how often you can log in and monitor your account. A farm can only work one field at a time. It will go to the closest one and work it until it's empty and then go to the next one. You just want enough fields on the map to keep the farms working until you can log in again and lay down new fields.
The same applies to masons and quarries. Masons travel to the nearest quarry deposit and work it until it's empty, then move to the next one. Your ultimate production depends on the number of masons you have, not the number of quarries. You only need 1 quarry to keep all your masons busy. The only difference with masons is you can't really control placement of the quarries so your travel time may vary every time you look for a new deposit.