US corn and soyabean futures pushed higher on Wednesday as traders worried that prices had dropped too low while there is still great uncertainty about the size of the autumn harvests.
The gains came after the most actively traded corn contract earlier in the session dropped to its lowest price in more than three months and after soyabeans fell to their lowest in more than two months.
Question marks surround the upcoming harvests of both crops after historic rains and flooding stalled plantings this spring. The delays left fields more at risk to damage from potential frosts.
The most-active corn contract on the Chicago Board Of Trade was up 1.5% at $3.71-3/4 a bushel at 12 p.m. CDT (1700 GMT). The most-active CBOT soyabean contract rose 0.8% to $8.65-3/4 a bushel.
The markets are going to concentrate on the risk of frost for the next six weeks and react to forecasts that reach out into late September and early October, said Tomm Pfitzenmaier, analyst for Summit Commodity Brokerage in Iowa.
Soyabean traders also are watching developments in the ongoing trade war between the US and China, the world's biggest importer of the oilseed. China slashed purchases from the United States after imposing retaliatory tariffs on imports of American soya last year, in response to US duties on Chinese goods.
The US Trade Representative's office on Wednesday reaffirmed President Donald Trump's plans to impose an additional 5% tariff on a list of $300 billion of Chinese imports starting on Sept. 1 and Dec. 15.
In wheat, the most-active CBOT contract was down 0.5% at $4.74-1/2 a bushel.