Wheat:  Net sales of 435,300 metric tons for 2018/2019 were down 34 percent from the previous week and 8 percent from the prior 4-week average  Corn:    Net sales of 1,431,000 MT for 2018/2019 were reported for Mexico (527,400 MT), Canada (199,700 MT, including decreases of 400 MT), Peru (184,900 MT, including 125,000 MT switched from unknown destinations and decreases of 6,400 MT), Japan (173,900 MT, including 73,100 MT switched from unknown destinations and decreases of 3,000 MT), and South Korea (136,100 MT, including decreases of 1,300 MT).   Soybeans:    Net sales of 1,521,200 MT for 2018/2019 were reported for Mexico (730,400 MT, including decreases of 400 MT), unknown destinations (274,000 MT...