Exchange traded funds that invest in grains, corn and the agriculture sector were slammed on Wednesday on favorable weather reports and speculation some investors may be positioning for a stronger dollar.

Teucrium Corn Fund (NYSEArca: CORN) was down more than 4% after the Federal Reserve held steady on interest rates and acknowledged the recent slowdown in the economy.

Corn futures fell the most in over a month while soybeans pulled back on wagers favorable weather will boost crops in the U.S., Bloomberg reported.

The iPath Dow Jones-UBS Grains ETN (NYSEArca: JJG) fell about 4%.

PowerShares DB Agriculture Double Short ETN (NYSEArca: AGA), a leveraged bearish product, rallied 4%.

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