ch. 1. Elevated atmospheric carbon dioxide : drought -- ch. 2. Elevated carbon dioxide in the soil : composition of the soil atmosphere -- ch. 3. Elevated carbon dioxide in the soil : interaction with the soil physical factors that affect root growth -- ch. 4. Elevated carbon dioxide in the soil : variable oxygen concentration and root growth -- ch. 5. Elevated carbon dioxide in the atmosphere : interaction with the soil physical factors that affect root growth -- ch. 6. Elevated atmospheric carbon dioxide : root growth -- ch. 7. Elevated atmospheric carbon dioxide : plant water potential, osmotic potential, and turgor potential -- ch. 8. Elevated atmospheric carbon dioxide : stomatal conductance -- ch. 9. Elevated atmospheric carbon dioxide : stomatal density -- ch. 10. Elevated atmospheric carbon dioxide : transpiration and evapotranspiration -- ch. 11. Elevated atmospheric carbon dioxide : water use efficiency -- ch. 12. Elevated atmospheric carbon dioxide : C3 and C4 plants -- ch. 13. Elevated atmospheric carbon dioxide : plant autonomy -- ch. 14. Elevated atmospheric carbon dioxide : phenology -- ch. 15. Elevated atmospheric carbon dioxide : growth and yield.