Lecture # 14- Agriculture; Origins and Now-Human Nutrition Ch 10-11, A closer look 10.1

1. Origins of Agriculture
   1. Foragers/Hunter gatherers
   2. Farming in one place
2. Early sites of Agriculture
   1. N. Vavilov and centers of origin
      1. Near East-wheat, barley, pea, lentil
      2. Far East- rice, millet, broomcorn, hemp
      3. New World- corn, squash, peppers, beans, potato
3. Domesticated plants today
   1. Artificially selected to suit human needs
4. Agricultural Statistics today
   1. 3% of the land of planet used for growing food
   2. US statistics
      1. 310 million acres farmland (16%)
      2. major crops, corn, wheat, soybeans, hay
      3. Increases in yield since 1950 a. corn-270% b. wheat- 100-150% c. soybeans- 100-150%
      4. US has 22% of worlds land, grows 47% of world crops
      5. US-0.5 million farmers, China- 800 million farmers
5. Human Nutrition
   1. Calorie
   2. Nutrition
      1. Lipids-Fats and Cholesterol
      2. Carbohydrates-sugar, starch, glycogen, fiber
      3. Proteins
      4. Vitamins: A, B, C, D
      5. Minerals: Calcium, Iron