Wheat:  Net sales of 90,600 metric tons for delivery in the 2018/2019--a marketing-year low--were down 26 percent from the previous week and 68 percent from the prior 4-week average.  Corn:   Net sales of 287,600 MT for 2018/2019--a marketing-year low--were down 51 percent from the previous week and 60 percent from the prior 4-week average.    Soybeans:   Net sale reductions of 149,100 MT for 2018/2019 were down noticeably from the previous week and the prior 4-week average.    Soybean Cake and Meal:    Net sales of 150,800 MT for 2018/2019 were up 90 percent from the previous week, but down 30 percent from the prior 4-week average.    Soybean Oil:  &nb...