Trump’s tariffs are upending crop trading, delaying tractor purchases and constraining imports of chemical supplies into the United States.

That’s the main message from big agricultural businesses as they report their quarterly earnings, giving an early glimpse into the far-reaching impacts of the U.S. president’s trade war.

The disruptions in global trade threaten to extend a years-long slump in the U.S. farm industry, which had already been struggling with ample supplies, depressed crop prices and rising competition from Brazil. Lack of clarity on how the Trump administration will address much-needed incentives for crop-based fuels in the next few years has added to concerns.