Wheat export sales data begins the new 2018/19 marketing year. Corn net sales of 936,400 MT for 2017/2018 were up 12 percent from the previous week and 2 percent from the prior 4-week average.  Soybean net sales of 519,600 MT for 2017/2018 were up noticeably from the previous week and from the prior 4-week average. Soymeal net sales of 74,600 MT for 2017/2018--a marketing-year low--were down 43 percent from the previous week and 66 percent from the prior 4-week average. Soyoil had a net sales reductions of 200 MT...