December markets can sometimes turn sluggish as traders wind down for the holidays. But buyers and sellers have plenty of news to trade today, increasing volatility. Soybeans rallied on Argentine weather early Sunday night, then reversed lower when Chinese financial markets tumbled. Crude oil surged, helping ethanol gain, after Saudi Arabia said it would cut production even more than previously announced. Investors in the U.S. are wondering what it means for Wall Street, as the Federal Reserve looks ready to raise interest rates this week.

Senior Editor Bryce Knorr offers his insight into overnight trade, listen using the audio tool on this page.

Buyers and sellers have plenty of news to trade today.

Bryce Knorr first joined Farm Futures Magazine in 1987. In addition to analyzing and writing about the commodity markets, he is a former futures introducing broker and is a registered Commodity Trading Advisor. He conducts Farm Futures exclusive surveys on acreage, production and management issues and is one of the analysts regularly contracted by business wire services before major USDA crop reports. Besides the Morning Call on www.FarmFutures.com he writes weekly reviews for corn, soybeans, and wheat that include selling price targets, charts and seasonal trends. His other weekly reviews on basis, energy, fertilizer and financial markets and feature price forecasts for key crop inputs. A journalist with 38 years of experience, he received the Master Writers Award from the American Agricultural Editors Association.