China has made significant buys of U.S. corn and soybeans this week, according to the Agriculture Department, as Beijing leads a surge in U.S. agriculture exports. According to the department’s Foreign Agricultural Service , China bought 420,000 metric tons of corn this week for delivery during the 2020-2021 marketing year, which began on Sept. 1. Exporters also reported sales of 264,000 metric tons of soybeans this week that will be headed for China. China committed to ambitious purchasing levels for...