
Wheat struggled to hold its geopolitical premium despite further Black Sea disruption, with MATIF closing lower and US wheat giving back most early gains. Ukraine cut its 2026/27 grain export forecast to 38–40 mmt from 43 mmt and warned of an 11 mmt storage shortfall if port disruptions persist. Russian wheat prices also declined despite higher logistics costs, with IKAR putting 12.5% wheat at $220/t FOB Novorossiysk. Russia was reportedly preparing a $122 million subsidy package to redirect agricultural exports by rail to Black Sea, Baltic and Far East ports. US corn export inspections remained strong at 1.74 mmt, while corn conditions were unchanged at 61% good to excellent.
Wheat moved lower again as reports of possible Russia-Ukraine discussions over safer shipping encouraged further liquidation. EU soft wheat exports reached 1.01 mmt by August 9, compared with 2.36 mmt last year, although current line-ups already indicated exports above 2.6 mmt. IKAR trimmed its Russian wheat crop forecast to 90.0 mmt and maintained export potential at 44.5 mmt. Attention then shifted to the August WASDE, where trade expectations pointed to a modest reduction in US corn yield and tighter corn stocks.
Grain markets turned sharply higher after the WASDE and another escalation around Black Sea export infrastructure. Ukrainian strikes suspended operations at major grain terminals in Novorossiysk, while Russia attacked Izmail, Ukraine’s largest Danube grain port. USDA cut its first survey-based US corn yield estimate to 180.7 bu/acre from 183.0, while stronger exports and lower beginning stocks reduced 2026/27 ending stocks by 137 mbu to 1.653 bln bu. Wheat fundamentals were less changed, with US ending stocks at 717 mbu and global stocks rising slightly to 273.3 mmt. Ukraine also secured a 50% discount on Moldovan rail transit as it sought alternatives to disrupted Black Sea routes.




Wheat remained highly volatile as disruption spread across Russian and Ukrainian export infrastructure. All three major Novorossiysk grain terminals were halted, representing around 75% of Russia’s Black Sea grain terminal capacity, while reports of damage at Ust-Luga extended the risk beyond the Black Sea. Ukrainian grain exports were down around 76% year on year in August as shipowners avoided ports, while low Danube water levels reduced the ability to redirect cargoes. Ukraine reportedly offered to halt attacks on civilian Black Sea targets if Russia reciprocated, although Moscow had not formally responded. US wheat export sales remained limited at 255.9k tonnes, while combined old- and new-crop corn sales reached 1.335 mmt.
Wheat finished the week sharply higher as further Black Sea escalation added risk premium and corn also firmed. Russia rejected the proposed Black Sea moratorium, while Novorossiysk remained heavily constrained and the strike on Ust-Luga demonstrated the risks surrounding alternative Russian export routes. FranceAgriMer cut French maize ratings another 2 pp to 29% good to excellent, compared with 65% last year, while AGPM lowered its grain maize estimate to 7–8 mmt. Argentina exported a record 5.14 mmt of corn in July as buyers gained another supply option while Black Sea reliability deteriorated. Managed money entered the WASDE week net long 166.8k corn contracts, while the Chicago wheat net short increased to 31.4k contracts.