[ratacat]

I think one of the biggest reasons theres not more of a push to get away from monocropping is the amount of labor required for harvesting, tending, planting, etc. Well that and the overhead for having your production span multiple outgoing market and distribution systems.

Poly cropping almost certainly ends up being more labor intensive, and even requiring some knowledge on the ground. The trend is very much so improving profit by reducing labor.