 Early gains in the wheat market gave way to late-session weakness that resulted in a mixed close. Part of the weakness may be the result of the U.S. dollar index, which rallied back above the 106 level for the first time since May 1st. Harvest pressure is also a factor. July Chicago wheat closed down a half at $5.41 and a quarter. September Chicago wheat was unchanged at $5.60 and a half. July Kansas City wheat closed up four pennies at $5.80. September Kansas City wheat closed up three cents at $5.84 and a half.