Headlines have surfaced in the past several weeks about severe drought conditions across much of the Midwestern United States, which has caused a significant price run up in agricultural commodities.

ETFs rallying on the news include including Teucrium Corn (NYSEArca: CORN), Teucrium Soybean (NYSEArca: SOYB), Teucrium Sugar (NYSEArca: CANE) and Teucrium Wheat (NYSEArca: WEAT) for instance.

The largest agricultural based ETF by a mile is PowerShares DB Agriculture (NYSEArca: DBA), which has amassed nearly $2 billion in assets under management since its debut in 2007. In fact, the next closest ETF in the category in terms of assets accumulated is iPath Grains (NYSEArca: JJG), which has attracted $172 million in assets. [Corn, Grains ETFs in Huge Breakout on Midwest Drought]

DBA was developed in order to provide diversified exposure to a number of agricultural commodity products within one index methodology. [Corn ETF Rally Fizzles After Harvest Forecast]

The fund utilizes a rules driven approach and invests in underlying futures contracts of various agricultural commodities.

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