Between 1950 and 1990, the world grain yield increased by an average of 2.2 percent a year. (treehugger.com)
The researchers found out that in response to global temperature increases, grain yield declines are predicted for most regions in the world. (sciencedaily.com)
In general, one cup of whole nuts or grains yields just over one cup of flour; usually the amount is increased by about 1/4 cup. (hvmag.com)