Exporters for the period October15-21, 2021.  Wheat - Net sales of 269,300 metric tons (MT) for 2021/2022 were down 26 percent from the previous week and 31 percent from the prior 4-week average.  Corn - Net sales of 890,400 MT for 2021/2022 were down 30 percent from the previous week and 10 percent from the prior 4-week average.  Soybeans - Net sales of 1,183,400 MT for 2021/2022 were down 59 percent from the previous week and 22 percent the prior 4-week average.  Soybean Cake and Meal - Net sales of 161,500 MT for 2021/2022.       Soybean Oil - Net sales of 14,600 MT for 2021/2022.  ...