I am new to this. I have a village with 15 villagers all of working age. I have the first two levels of every tech except fertility and sprituality. My problem is it takes so long for my field to regenerate, that I am running out of food.

Even if I put all 15 villagers on farming, I cannot produce enough food. I have 32000 tech, so I am going for the thrd level of farming, but it there any was to supply a village of 15 without the third level? Is there another food source I have missed?