I'm a relatively new player to SMAC, but I started playing for the first time in a while. I built some farms, but looking at the city screen, it doesn't seem like they're doing anything. The square gave 2 nutrients before, and after the terraforming was completed, it says it gives 2 nutrients now, when I think it should be giving 3. This is the very start of the game. Does anyone know what's going on?