Wheat:  Net sales of 379,800 MT for 2018/2019 were down 8 percent from the previous week and 14 percent from the prior 4-week average.      Corn:  Net sales of 30,100 MT for 2017/2018--a marketing-year low--were down 83 percent from the previous week and 90 percent from the prior 4-week average.  Soybeans:  Net sales of 600 MT for 2017/2018 were down 100 percent from the previous week and from the prior 4-week average.     Soybean Cake and Meal:  Net sales of 69,300 MT for 2017/2018 were up noticeably from the previous week, but down 45 percent from the prior 4-week average.    Soybean Oil: Net sales reductions of 3,700 MT for 2017/2018 were down noticeably from...