Monthly production of an 1,800 square foot greenhouse |
Description | Production (lbs) | Calories / 100 grams | Calories / month | Notes/References |
| Greens | 6,000 | 23 | 625,140 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=17017 (iceberg lettuce) |
| Tomatos | 1,000 | 19 | 86,070 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=26236 (cherry tomatoes) |
| Berries | 500 | 32 | 72,480 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=2328 (strawberries) |
| Legumes | 800 | 24 | 86,976 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=8011 (french beans) |
| Potatoes | 83 | 73 | 27,558 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=20380 (red potatoes) |
| Carrots | 83 | 41 | 15,478 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=2751 |
| Garlic | 83 | 149 | 56,248 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=2816 |
| Onions | 83 | 40 | 15,100 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=2875 |
| Beets & Root Vegetables | 83 | 43 | 16,233 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=2714 (beets) |
| Assorted Peppers | 700 | 16 | 50,736 |
http://www.foodfocus.co.uk/searchresult.php?FoodID=19142 (sweet peppers) |
| Total | 9,417 | | 1,052,017 | |
| | | | 18.85 | Calories/sqft/day |
| Average calories per person per day | 2,500 | | | |
| People covered per month | 13.57 | | | |
| Square feet per person | 132.60 | | | |
| Arable land (square km) | 13,805,153 | | | http://en.wikipedia.org/wiki/Arable_land |
| Square feet per sq km | 10,763,910 | | | |
| Number of people supported by arable land | 1,120,623,775,303 | | | |
| People per sqkm | 81,174 | | | |
| People per sq mile | 210,241 | | | |
| Total land surface (sqkm) | 148,940,000 | | | http://en.wikipedia.org/wiki/Earth |
| Percent land surface utilized | 9.27 | | | |