The rise in Grain Yield per hectare is slowing in all major grain-producing regions. Since 1984, grain output per person has fallen on average by .6 percent per year. In 1998, the per capita grain output further declined to 695 pounds, this is an 8 percent decline from the peak in 1984 when the per capita grain output was 755 pounds. The slower growth in world grain harvest is due to the lack of new land and slower growth in irrigation and fertilizer use. Irrigated area per person, after expanding by 30 percent from 1950 until 1978, has declined by 4 percent. Since then the growth in the irrigated area has fallen behind that of population. With biotechnology neither providing nor promising any dramatic breakthrough in raising yields, there is little hope for restoring growth in food output.
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