Wheat:  Net sales of 462,200 metric tons for 2019/2020 were down 5 percent from the previous week and 2 percent from the prior 4-week average. Corn:  Net sales of 56,100 MT for 2018/2019 were up 32 percent from the previous week, but down 56 percent from the prior 4-week average.   Soybeans:  Net sales reductions of 109,900 MT for 2018/2019 were down noticeably from the previous week and from the prior 4-week average. Soybean Cake and Meal:  Net sales of 130,100 MT were up 41 percent from the previous week and 45 percent from the prior 4-week average.  Soybean Oil:  Net sales of 1,400 MT for 2018/2019--a marketing-year low--were down 96 percent from the previous week and 91 percent from the prior...