Wheat:    Net sales of 338,600 metric tons for 2019/2020 were down 48 percent from the previous week and 35 percent from the prior 4-week average.   Corn:    Net sales of 1,247,800 MT for 2019/2020 were up 1 percent from the previous week and 57 percent from the prior 4-week average.    Soybeans:    Net sales of 703,800 MT for 2019/2020 were up 76 percent from the previous week and 29 percent from the prior 4-week average.   Soybean Cake and Meal:    Net sales of 212,700 MT for 2019/2020 were down 52 percent from the previous week and 44 percent from the prior 4-week average.   Soybean Oil:    Net sales of 52,900 MT for 2019/2020 were primarily for...