Iowa State climatologist Elwynn Taylor told producers at the Peoria Farm Show that La Niña tends to lower trend-line yields. He also said South American climate brings volatility to the Midwest crop.
Lower trend-line yield expectations under La Niña could support corn and soybean prices if the market prices in smaller crops.
After 1,465 past bullish weather events, Corn moved a median +0.2% over 5 sessions (54% higher; middle half -1.4% to +1.9%), and +0.9% over 20.
After 1,079 past bullish weather events, Soybeans moved a median +0.3% over 5 sessions (54% higher; middle half -1.4% to +2.0%), and +0.9% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.