Export Sales and Shipments for October 6-12, 2023.   Wheat:  Net sales of 632,800 metric tons (MT) for 2023/2024 were down 3 percent from the previous week, but up 42 percent from the prior 4-week average. Export shipments of 385,100 MT were up 12 percent from the previous week, but down 4 percent from the prior 4-week average. The destinations were primarily to Japan (175,100 MT), Nigeria (56,100 MT), South Korea (38,600 MT), Mexico (27,800 MT), and Algeria (20,500 MT).   Corn:  Net sales of 881,300 MT for 2023/2024 were down 3 percent from the previous week and 15 percent from the prior 4-week average. Export shipments of 516,300 MT--a marketing-low--were down 37 percent from the previous week and 25 percen...