Wheat:  Net sales of 868,600 metric tons for 2019/2020--a marketing-year high--were up 73 percent from the previous week and 95 percent from the prior 4-week average.  Corn:  Net sales of 1,709,400 metric tons for 2019/2020--a marketing-year high--were up 96 percent from the previous week and up noticeably from the prior 4-week average.  Soybeans:  Net sales of 1,430,600 MT for 2019/2020 were up 36 percent from the previous week and 18 percent from the prior 4-week average.   Soybean Cake and Meal:    Net sales of 83,500 MT for 2019/2020--a marketing-year low--were down 65 percent from the previous week and 53 percent from the prior 4-week average.  Soybean Oil:  Net sales of 28,000...