Volatile Weather Delays Corn and Soybean Plantings in South America

Heavy rains are wreaking havoc on Argentina’s farmland, leaving nearly 4 million acres at risk and delaying corn and soybean plantings in one of the world’s top grain export regions.

BUENOS AIRES, ARGENTINA (RFD-TV) — A shift in South America’s weather could shake up the crop outlook and help increase the competitiveness of U.S. grains in global trade markets.

Earlier in the week, the weather in Argentina and southern Brazil was trending drier, threatening soil moisture for winter wheat, corn, and first-season soybeans. Meanwhile, central Brazil was expected to see increased rain, easing dryness, but delaying soybean planting.

As of Thursday, heavy rains are wreaking havoc on Argentina’s farmland, and leaving nearly four million acres at risk. Central Buenos Aires is one of the world’s top grain-exporting regions. However, farmers are currently unable to access their fields, delaying soybean and corn plantings. Argentine farmers worry some land may remain idle for months, blaming years of under-investment in drainage and roads for worsening the impact.

Brian Hoops with Midwest Market Solutions told RFD-TV News that orders and cancellations will be worth watching in the weeks ahead. Hoops also said to keep an eye on weather conditions in Brazil, currently China’s top soybean supplier.

“We’re looking at China, not really buying a lot of soybeans—pretty good weather in South America – and yet, the market continues just to march higher,” Hoops explained. “We are in a tactical uptrend here for soybeans in the entire soy complex. That is giving us some strength from algorithmic-type trading on dips in the marketplace, to see if we continue to push higher. So we’re seeing a lot of strength in that, soybeans.”

Meteorologists link the pattern to a peaking La Niña, with conditions possibly normalizing early next year. Farmers will be watching closely, as this volatility could impact corn and soybean production across the continent.

Marion is a digital content manager for RFD News and FarmHER + RanchHER. She started working for Rural Media Group in May 2022, bringing a decade of digital experience in broadcast media and some cooking experience to the team.

LATEST STORIES BY THIS AUTHOR:

From meatpacking settlements to landmark NEPA rulings, Roger McEowen outlines the top legal developments in 2025 that will shape agriculture in the years ahead.
Alan Bjerga with the National Milk Producers Federation joined us to review new policies and regulations supporting the dairy industry and what they mean for the year ahead.
Despite rising costs and growing food insecurity, meat demand remained strong in 2025 as higher-income consumers offset cutbacks elsewhere. Economists break down the K-shaped economy, upcoming USDA cattle reports, livestock production outlooks, and renewed debate over beef imports and country-of-origin labeling heading into 2026.
Corn growers are turning to ethanol, E15 expansion, and export markets to help absorb record supplies and stabilize prices. Farm leaders discuss low-carbon ethanol demand, flex-fuel vehicle challenges, input costs, and the role of USMCA as producers look for market relief in the year ahead.
From rising trade tensions in Europe to a pending Supreme Court decision on tariffs and shifting demand from China, global trade policy spearheaded by President Donald Trump continues to shape the outlook for U.S. agriculture—adding uncertainty as farmers navigate another volatile year.
The Surface Transportation Board rejects the proposed Norfolk Southern–Union Pacific merger, prompting concerns from agricultural shippers about rail consolidation, service reliability, and higher transportation costs.