Exporters for the period August 13-19, 2021 Wheat:  Net sales of 116,000 metric tons (MT) for 2021/2022--a marketing-year low--were down 62 percent from the previous week and 67 percent from the prior 4-week average.   Corn:  Net sales of 6,600 MT for 2020/2021 were down 97 percent from the previous week and 95 percent from the prior 4-week average.   Soybeans:  Net sales of 75,100 MT for 2020/2021 were up 11 percent from the previous week and up noticeably from the prior 4-week average. Soybean Cake and Meal:  Net sales of 61,700 MT for 2020/2021--a marketing-year low--were down 14 percent from the previous week and 40 percent from the prior 4-week average.   Soybean Oil:  Net sal...