"The grain required to fill a 25-gallon SUV gas tank with ethanol will feed one person for a year" (not quite, but for 3 months):
www.earth-policy.org/Updates/2006/Update55.htm
one bushel of corn (56 lbs) = 5.6 pounds of retail beef, 13 pounds of retail pork, 28 pounds of catfish, or 32 pounds of chicken:
www.iowacorn.org/cornuse/cornuse_20.html
one bushel of corn = 2.8 gallons of ethanol and 18 lbs of animal feed:
www.iowacorn.org/ethanol/ethanol_3a.html
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corn = 86 calories / 100g or 860 cal / 2.2 lbs or 390.9 cal / lb
one bushel of corn = 56 lbs or 21890.4 cal
one acre of corn = 170 bushels (approx.) or 9520 lbs or 3,721,368 calories
person needs 2500 calories / day or 912,500 / year
one acre of corn provides calories for 4 people
wheat = 327 cal / 100g or 3270 cal / 2.2 lbs or 1690.9 cal / lb
one bushel of wheat = 60 lbs
one acre of wheat = 47 bushels (approx.) or 2820 lbs or 4,768,338 cal
person needs 2500 calories / day or 912,500 / year
one acre of wheat provides calories for 5.2 people
rice = 365 cal / 100g or 3650 cal / 2.2 lbs or 1659 cal / lb
one bushel of rice = 45 lbs
one acre of rice = 160 bushels (approx.) or 7200 lbs or 11,944,800 cal
person needs 2500 calories / day or 912,500 / year
one acre of rice provides calories for 13 people
(note this is rough rice and not milled rice)
soybeans = 446 cal / 100g or 4460 / 2.2 lbs or 2027.3 cal / lb
one bushel of soybeans = 60 lbs
one acre of soybeans = 40 bushels (approx.) or 2400 lbs or 4,865,520 cal
person needs 2500 calories / day or 912,500 / year
one acre of soybeans provides calories for 5.2 people
**these figures do not reflect moisture content of the grain, nor do they reflect such factors as food processing, climate, irrigation needs, or fertilizer/pesticides used. That said, in 2006 Iowa grew enough corn to supply 50,377,000 people with calories for the year; and the U.S. corn crop alone could provide all the calories for the U.S. population and still have enough extra for 18 million people (not counting extra calorie intake).**
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mexico & central america import U.S. rough rice:
www.ers.usda.gov/AmberWaves/February07/Findings/RoughRice.htm
cuba imports U.S. feed corn:
www.allaboutfeed.net/home/id102-26802/cuba_outlet_for_ddgs_from_iowa.html
organic corn yields:
www.newfarm.org/depts/notill/features/2007/0307/cornresearch.shtml
hcs.osu.edu/news/detail.lasso?id=447
www.chewswise.com/chews/2007/07/can-organic-far.html
"Average corn grain yield was 30% greater in a corn-soybean-wheat-hay rotation than in a corn-soybean rotation... This research shows that increasing crop rotation length and complexity can address the two most important production challenges in organic grain crop production: providing adequate nitrogen for crop needs and decreasing weed competition":
www.ars.usda.gov/research/projects/projects.htm?ACCN_NO=407791&showpars=true&fy=2007
U.S. ethanol imports:
www.ethanolrfa.org/industry/statistics/
U.S. doubled import of Iraqi oil prior to invasion:
www.guardian.co.uk/world/2003/jan/26/iraq.oil
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Iraq oil exports / U.S. imports
2001 1.6m b/d / 795,000 b/d us
2002 1.5m b/d / 566,000 b/d us
2003 0-1.5m b/d / 500,000 - 1m b/d
2004 2.0m b/d / 800,000 b/d
2005 1.5m b/d / 531,000 b/d
2006 1.5m b/d / 553,000 b/d
2007 1.7m b/d / 433,000 b/d
2008 1.9m b/d / 780,000 b/d (Feb.)
https://www.cia.gov/library/publications/the-world-factbook/print/iz.html
http://www.iraqupdates.com/p_articles.php/article/29984
http://news.bbc.co.uk/2/hi/middle_east/4569360.stm#graph
http://www.eia.doe.gov/emeu/cabs/Iraq/OilExports.html
http://www.fromthewilderness.com/free/ww3/030703_us_intentions.html
http://www.eia.doe.gov/emeu/aer/txt/ptb0504.html
