This summary is for the period July 23-29, 2021.  Wheat:  Net sales of 308,300 metric tons (MT) for 2021/2022 were down 40 percent from the previous week and 28 percent from the prior 4-week average. Corn:  Net sales of 68,200 MT for 2020/2021 were down noticeably from the previous week, but up noticeably from the prior 4-week average.  Soybeans:  Net sales of 11,400 MT for 2020/2021 were down noticeably from the previous week and down 33 percent from the prior 4-week average. Soybean Cake and Meal:  Net sales of 135,400 MT for 2020/2021 were up 55 percent from the previous week and 24 percent from the prior 4-week average. Soybean Oil:  Net sales of 3,200 MT for 2020/2021 were up 48 percent from the...