Export Sales and Shipments for March 3-9, 2023   Wheat:  Net sales of 336,700 metric tons (MT) for 2022/2023 were up 26 percent from the previous week and 23 percent from the prior 4-week average. Export shipments of 250,700 MT were down 34 percent from the previous week and 45 percent from the prior 4-week average.  Corn:  Net sales of 1,236,200 MT for 2022/2023 were down 13 percent from the previous week, but up 28 percent from the prior 4-week average. Export shipments of 1,164,900 MT--a marketing-year high--were up 11 percent from the previous week and 52 percent from the prior 4-week average.  Soybeans:  Net sales of 665,000 MT for 2022/2023 were up noticeably from the previous week and from the pr...