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Gains in higher-protein K.C. hard red winter wheat and MGEX spring wheat outstripped strength in the benchmark Chicago Board of Trade soft red winter wheat contracts .
CBOT September soft red winter wheat, the most-active contract, found support from early weakness at its 30-day moving average.
CBOT September wheat failed to hold support above its 40-day moving average and closed below session highs. The contract also struggled to break through its weekly high of $4.30 a bushel.
A global supply glut and poor demand for US exports continue to act as drag on US wheat futures, limiting the gains.