I know it sounds high, but it is being done....
43,560 square feet in an acre of well augmented soil, plastic mulch with permanent drip feeding irrigation - investment of about $20,000 and much much labor...
It is about inline with other crops too - corn silage, hybrid poplars and willows yield from 15 and up to 20 Tons per acre per year, tomatoes can do higher (actually 40 tons). Cabbage, head lettuce, carrots can do it too.
Wow!
We have Hmong farmers near here and they love to grow strawberries. Their homes are usually surrounded by clutter and junk but their farms are usually well tended and clean. No wonder they lavish so much time on their strawberries and raspberries! They are making big money at $2.99 a basket!