Monsanto contended that commodity grain is restricted for use as feed, not cultivation, and its use, even as a second year commodity purchase violates the one-time use license agreement.

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Along with that, grape growers must accept that their chosen profession is subject to the same market forces as every other commodity, from grain to natural gas.

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Bowman said he bought the seeds as part of an undifferentiated mix of "commodity" seeds from a grain elevator, and that farmers had used such seeds for planting for decades.

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He used the patented soybeans for his main spring crop, but went to a local grain elevator and purchased so-called commodity seeds for a riskier, late-season crop.

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Any big price moves in the grain futures markets Friday may spill over into other commodity markets, including gold and silver.

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At the same time, the commodity boom is lifting the rural economy by fattening profits for U.S. grain farmers and exporters.

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Karl Setzer, commodity trading adviser at MaxYield Cooperative in Iowa, said the gain the dollar had a significant impact on the grain markets, which were already in a downtrend.

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