Key Takeaways:

Corn and soybean prices rallied sharply last week as declining U.S. production expectations collided with strong demand, raising the prospect of tighter supplies and leaving the market with a smaller margin for further yield losses. The USDA’s lower August yield estimates and disappointing results from the Pro Farmer Crop Tour have reinforced concerns that U.S. corn and soybean production could fall short of earlier expectations, with even trend-line yields becoming an increasingly ambitious target. Wheat has joined the broader rally in agricultural markets, although its strength has been driven more heavily by supply concerns than demand. A poor U.S. crop has reduced available supplies, while damage to Black Sea ports...