Figure 4. Regional Yield Maps (http://agroclimate.org/tools/regionalYield/) illustrate areas where yields have been above, below, or near-average for different crops and ENSO phases. Results are based on county-level historical yields (corn, cotton, hay, oats, peanut, potato, rye, sugarcane, sorghum, soybean, tobacco, and winter wheat) from the USDA National Agricultural Statistical Services (NASS). The figure above shows that La Niña results in above-average corn yields for much of the Southeast.
Credit: Clyde Fraisse