Wheat:  Net sales of 661,200 metric tons for 2018/2019 were up 14 percent from the previous week and 47 percent from the prior 4-week average.   Corn:  Net sales of 701,500 MT for 2018/2019 were up 78 percent from the previous week and 32 percent from the prior 4-week average.   Soybeans:  Net sales of 388,400 MT for 2018/2019 were down 2 percent from the previous week, but up 16 percent from the prior 4-week average.   Soybean Cake and Meal:  Net sales of 255,100 MT for 2018/2019 were reported for Ecuador (38,200 MT, including decreases of 1,800 MT), Mexico (30,500 MT, including decreases of 3,100 MT), the Philippines (29,100 MT), Colombia (28,300 MT, including 9,000 MT switched from unk...