
Reuters reports that La Nina is expected to affect Argentina's 2025/26 planting of corn and soybeans. The Rosario Grains Exchange projects corn harvest at 47 million tons and a record 61 million tons of soybeans.
A large projected Argentine soybean crop would add export supply and pressure soybean meal and oil prices. La Nina dryness risk is the main upside factor that could reverse this outlook.
After 363 past bearish weather events, Soybeans moved a median -0.6% over 5 sessions (42% higher; middle half -2.5% to +1.1%), and -0.2% over 20.
After 445 past neutral weather events, Corn moved a median +0.1% over 5 sessions (52% higher; middle half -1.4% to +1.6%), and +0.7% over 20.
After 118 past bearish weather events, Soybean Meal moved a median -0.8% over 5 sessions (35% higher; middle half -3.2% to +0.4%), and -1.6% 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.