!! SEPP to Boot: Stephen's Experience (BEL)

An acre of monoculture wheat (60lb/bushel, 40+ bu/ac - a reference I found suggested 2989 kg/ha) and using wheat flour from 362-370 kCal/100g gets in the 1 M kCal range.  Without running your numbers, I think your math is reasonable.  

Of course, I've been wrong before...just ask She Who Must Be Obeyed

That looks right to me!  My GAMCOD potato harvest, multiplied out would give 2.7 million calories per acre.

Stephen B. Thomas wrote:Can someone help correct my calculations?

Math checks out!

sunchokes are $6.98 per pound
potatoes are about $1 per pound
pumpkins are about $10 per pumpkin

If I math out all of this at about $1 per pound ...  85 pounds ->  $85.  If this was the whole acre, it would be about $18,513.

Stephen B. Thomas wrote:GAMCOD Plot size: 8ft x 25ft (200sq ft)
Acre Size: 43,560 sq ft
One Acre / GAMCOD Plot = 217.8

GAMCOD Calories expanded to cover a full acre = 20,570.5 * 217.8 = 4,480,254.9

...That seems like a lot, to me. Can someone help correct my calculations?

This has probably been discussed somewhere already - I didn't read 200 pages! - but when you extrapolated your square footage up to a full acre, did you account for pathways?  I would figure 30-inch-wide pathways on all sides of your hugels to accommodate a wheelbarrow.  Expanded out to an acre, that adds up to a significant non-productive footprint, which will reduce your total yield.

Theoretically, you could minimize the negative impact of pathways by doubling the length of each hugel, so to require fewer pathways, or by rearranging your hugels and pathways into an interlocking keyhole pattern.  Anything to maximize the productive footprint.  But then again, you might wish to preserve your 8-foot-wide, 25-foot-long hugel bed dimension so as to keep your calculations true to your experimental test bed.  Besides, that seems like a convenient size for real-world gardening.

You should really map out on graph paper how many hugel beds and pathways you can fit into one (square? rectangular?) acre of land.  One pathway serves the hugels on both sides of it.  Once you have it on paper, you can play with dimensions and orientations as you wish to fit the most hugel beds into your space cleanly.  Then you would arrive at a thoroughly realistic factor to multiply the square footage of your test bed to fill out an acre.