Corn futures fell to around $5.20 a bushel, a three-week low, as a soybean selloff spread across grain markets after China excluded non-seed US soybeans from proposed tariff reductions. Corn was included in Beijing's proposed tariff relief, but the agreement contained no new US corn purchase commitments. US corn export inspections reached 1.57 million metric tons in the week ended September 24, down from 1.96 million tons the prior week but near the high end of market expectations. The US corn harvest was 18% complete as of September 27, ahead of the five-year average, while 56% of the crop was rated good or excellent. Traders are awaiting the USDA's September 30 Grain Stocks report for updated estimates of domestic inventories. The market reaction underscores the importance of China, the largest buyer of US soybeans, to broader US grain pricing. The proposed US-China tariff package covers corn and other farm goods, while non-seed soybeans remain subject to China's 10% retaliatory tariff. The two countries extended their trade truce through January 10 and plan further agricultural discussions.