New-crop corn firms in Rosario while soybeans retreat
Rosario’s 2026/27 corn bids strengthened while nearby soybean prices fell and wheat remained broadly stable on September 8. Chicago moved in the opposite direction for corn and soybeans as traders assessed US yields, Chinese demand and Black Sea disruption.
Forward corn bids strengthen
New-crop corn prices improved in Rosario on Tuesday, September 8, while soybean bids declined and wheat remained broadly stable. Ruralnet, citing the Rosario Board of Trade, reported that corn again generated the strongest buying interest. The return of Chicago trading after the US holiday gave local buyers fresh external references, although Chicago corn futures ended lower.
Nearby Argentine corn values were comparatively steady. Available grain traded at $195 per tonne, while the contractual-delivery bid edged up to $196 per tonne. Delivery from September 15 to October 15 held at $198 per tonne, and October and November were quoted at $200 per tonne. Bids for December through February reached $205 per tonne.
The firmer movement was concentrated in the 2026/27 campaign. March corn rose marginally to $207 per tonne, while April and May reached $206 per tonne. For late corn, June was quoted at $205 per tonne, up $2 per tonne between sessions, and July at $203 per tonne, an increase of $1 per tonne. The gains indicate stronger buyer support for forward supply even as international corn prices weakened.
Soybean bids diverge from Chicago
Rosario soybean bids fell below Monday’s levels as local processors opened with prices that remained distant from sellers’ expectations. Contractual delivery under EPA terms and price fixings were quoted at 550,000 pesos per tonne, down 10,000 pesos per tonne intraday. The same price applied to November. The November EPA/EUDR bid declined by $4 per tonne to $375 per tonne, while SIO-Granos recorded contractual business around 555,000 pesos per tonne.
The local decline contrasted with higher soybean futures in Chicago. According to Ruralnet, Chinese purchases and concern about hot, dry conditions in some US producing regions supported the US market. That divergence left Rosario’s processing bids, rather than Chicago’s direction alone, as the immediate constraint on domestic soybean trading.
Black Sea risks support wheat
Rosario wheat trading remained limited and most bids were unchanged. Available wheat returned at $230 per tonne, while September 15-October 15 delivery and full October held at $235 per tonne. November, December and the December 15-January 15 window stood at $225 per tonne. January remained at $230 per tonne, February rose by $2 per tonne to $232 per tonne, and March was quoted at $235 per tonne.
Chicago wheat gained 2% as the lack of progress in Russia-Ukraine negotiations and attacks on ports and vessels constrained Black Sea grain shipments. Ruralnet also reported stronger interest in Argentine and Australian wheat from Asian importers seeking alternatives. Sunflower bids were unchanged at $500 per tonne for available and contractual delivery, while December-March 2027 was quoted at $450 per tonne, or $470 per tonne for high-oleic seed. Available sorghum held at $180 per tonne, and no barley bids were opened.
