Corn Rallies on Disappointing Crop Tour Results as Soybeans Slide Due to Trade Fears

Corn futures surged on Monday as disappointing yield results from last week's Midwest Crop Tour weighed heavily on market expectations, while soybeans slid due to renewed U.S.-China trade friction tied to a Treasury Department announcement expected this afternoon.

Mike Castle, senior commodities economist at StoneX, attributed the corn rally to the underwhelming crop tour results, which came in well below USDA's August estimate. 'On average, they're about four and a half bushels below USDA's August estimate,' he said, adding that this year's tour 'came in seven and a half below.'

Castle noted that the gap between the tour results and USDA estimates does not necessarily guarantee a matching cut from the agency. However, he suggested that the wider-than-normal spread may indicate some additional downside for yield and production expectations.

The market will closely watch Monday afternoon's crop progress report, which Castle said could sway the market depending on how much corn conditions decline. A bigger-than-typical decline in conditions would likely drag down yield model estimates and reinforce concerns about a shrinking corn crop.

Soybeans were pressured by fears of renewed U.S.-China trade friction tied to Treasury Secretary Scott Bessent's planned announcement on Iran sanctions enforcement. Castle argued that China's recent soybean buying has been driven more by politics than economics, given cheaper South American supplies and ample Chinese stocks.