Science Fair Project Encyclopedia
Protein per unit area
Edible protein per unit area for various foodstuffs:
|Legume (all non-soybean legumes averaged)||22||192|
|Meat (all meats averaged)||5.0||45|
Soybean provides the largest amount of protein per unit area. Soybeans, as a legume, produce essential amino acids such as lysine and fix their own nitrogen, so it doesn't have to be added as a chemical fertilizer in large amounts.
- John Lobell, The Little Green Book
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