Squalor?

[Craterus]

Hmmm, I generally don't think about it when I build farms. I build them for the increased trade and money

[Red Harvest]

Hmmm, I generally don't think about it when I build farms. I build them for the increased trade and money

This works well on low growth regions, but it is counterproductive on high growth regions. Farm income is in increments of about 75 denarii per level if memory serves. (It is not percentage based, this is a fixed incremental.) So adding 1 increment won't even pay to keep up a single unit of peasants.