Soybean acreage is at a record high and the attractiveness of corn planting has declined.

Us farmers reduced their corn acreage this spring, bringing soyabean acreage to a record high, with strong demand in overseas markets and is expected to be dominated by soyabeans in the coming years.

This marks a reversal of the planting trend in the United States. Because of the sharp rise in corn prices over the past decade, American farmers have expanded their corn acreage as much as possible. "the focus has clearly shifted to soybeans," said Sal, president of Teucrium Trading.

Gilbertie said. The company manages a single commodity listed trading fund (ETF) that invests in cereals and oilseeds. "of course, farmers have to respond to very basic questions such as which crop benefits the most."

Corn prices have risen strongly in recent years, with CBOT corn prices hitting a high of $4 a bushel in August 2012. Farmers are also willing to take a risk to increase their acreage so that it will not have too much impact in the event of lower-than-expected yields, so corn acreage has increased significantly on the edge of corn belts such as North Dakota.

But corn prices are now down 40% from their 2012 high, and it is critical to increase yields as much as possible to ensure earnings. Soyabean acreage in the United States increased by 8.31 million acres in 2014, the fourth highest annual increase in history.

Soyabeans are growing well this year and are expected to hit a record high in autumn, according to the U.S. Department of Agriculture (USDA), despite concerns that high soil moisture could affect yields later in the planting. USDA's latest crop growth report shows that the excellent and good rate of soybeans is 70%, the highest in 22 years at the end of August.

Soybean production is expected to hit a record high, much of which will be absorbed by a surge in overseas demand. USDA forecasts that soybean exports in 2014 are expected to be 1.675 billion bushels, and China, the largest buyer, is expected to buy most of the soybeans exported from the United States.