Corn and soybean futures posted modest gains Tuesday, March 3, as traders reacted to a fresh USDA flash export sale, evolving U.S. weather forecasts and escalating Middle East tensions that shook Wall Street but failed to derail grain markets. The session is significant for U.S. agriculture because export demand, energy prices and fertilizer risk are converging just weeks before widespread spring planting begins.

According to the March 3 Farm Futures afternoon grain market commentary , May corn futures settled up 0.75 cents at $4.4650, while July corn added 1.25 cents to $4.5550. Overnight strength faded during the session but managed to hold into the close, signaling underlying technical support.

Private exporters reported to USDA the sale of 7.7 million bushels of corn for delivery during the 2025-26 marketing year . Additional international demand surfaced with South Korean importers purchasing 5.2 million bushels in a recent tender. These sales provide near-term support as the market balances ethanol demand softness and global supply competition.

USDA's Grain Crushing report showed 460.95 million bushels of corn were used for ethanol in January, down 1.5% year over year and 4.5% below December totals , tempering bullish enthusiasm tied to export strength.

Soybeans also firmed, with May futures rising 6.5 cents to $11.7050 and July up 6.25 cents to $11.8325 . The broader soy complex followed higher, supported by crush data and chatter about slightly reduced Brazilian production potential. USDA reported a January soybean crush of 227.8 million bushels, while soyoil stocks climbed to 2.43 billion pounds, up 11.7% from December .

Wheat markets were mixed. May Chicago SRW futures dropped 3.25 cents to $5.74, pressured by forecast rains, while May Kansas City HRW gained 3.5 cents to $5.7825 . Diverging precipitation patterns continue to influence winter wheat yield expectations across soft and hard red growing regions.

Beyond grains, escalating conflict involving Iran added volatility to financial markets. Brent crude oil climbed 2% to $79 per barrel, while gasoline futures surged nearly 4% . Analysts warn the timing "could not be worse" for fertilizer markets, given the Gulf region's concentration of nitrogen production and energy infrastructure. For U.S. producers, higher crude prices translate into elevated diesel, input costs and supply chain expenses just as planting decisions are finalized.

Weather remains a central variable. NOAA forecasts show a band of showers delivering 1 to 2 inches across portions of the Central Plains and Ohio River Valley this week, with seasonally wet conditions possible in the 8-to-14-day outlook. Soil moisture recovery will be closely monitored for its impact on yield potential, acreage decisions and crop insurance strategies.

Three-Month Futures Performance Snapshot

(Based on chart data in the March 3 commentary report)

May '26 Corn Futures (CBOT)

Trend Insight: After a January selloff, corn established support near $4.30 and has gradually rebuilt momentum into early March.

May '26 Soybean Futures (CBOT)

Trend Insight: Soybeans show the strongest upward momentum of the grain complex since late January.

May '26 Chicago SRW Wheat (CBOT)

Trend Insight: Wheat remains highly weather-sensitive, with volatility tied to precipitation expectations across key producing states.

In total, Tuesday's session underscored a market environment where solid export demand and improving technical patterns are colliding with geopolitical uncertainty, rising crude oil and fertilizer risk. For U.S. producers, disciplined marketing, capital management and close monitoring of weather and energy markets will remain essential as the 2026 growing season approaches.