Zones yeah the Growing Crop spell increases your food production, but it's kinda of expensive to cast and you only get 6 ticks of time on it, it's best used in emergency situations. You would probably be better off to buy food from market sellers and use MP to cast blessing which increases your gold income really well.
I recently lost a lot of troops and am now making an insane amount of food, I can send you some to trade for iron/wood/gold if you want, I'll give ya a good deal, send to xanaphait alderd 7 🙂
