The September WASDE: A Yield Cut, A Surprise, and a Close Lower

Grains spent most of this week consolidating, with soybeans the exception after they pushed to fresh highs overnight. All eyes were on this morning’s September USDA report, and the market came in braced for yield cuts. The USDA delivered a cut, but not quite as much as the trade was expecting, and with no bullish surprise the market chopped around but eventually closed lower on the day.

Corn: the cut landed mostly where the crop tour said it would. The USDA trimmed the national corn yield to 178.5 bushels, down from 180.7 in August. The damage was concentrated in the drought-stressed Plains, North Dakota, Nebraska, South Dakota, Kansas and Colorado all took meaningful hits, exactly where the Pro Farmer tour flagged trouble last month. The catch: at 178.5, the cut was a touch smaller than the trade expected. Corn actually sold off first the moment the report hit, dropping on the smaller-than-expected cut, then reversed sharply higher to the day’s highs as buyers stepped in, before drifting back through the afternoon to settle only modestly lower on the day. New-crop ending stocks still fell from August, and the USDA even trimmed feed use to keep stocks from tightening further, so the crop is smaller than it was a month ago even if it printed above the estimate.

The surprise is Iowa, but watch the whole eastern Corn Belt too. While the drought Plains got cut, the USDA went the other way in Iowa, raising it three bushels to a fresh record and leaning on it to hold the national number up. That will be an important variable to track. Both the Pro Farmer tour and our own yield model see Iowa softer than a record, so if the USDA has to walk that number back in October, it matters.

The rest of the eastern Belt got a split verdict, and it is worth understanding, because the tour had flagged Ohio, Indiana and Illinois as production drags, all reading softer than last year even though the USDA had been carrying them at or near record yields. This month the USDA gave a nod to the tour in Indiana, trimming the yield roughly in line with what the scouts found. In Illinois, the tour’s weakest state, it acknowledged some slippage but cut only a fraction of what the tour implied. And in Ohio, it did not confirm the tour’s damage at all, essentially holding the state at a record. Our own model sits in between across the East, below the USDA but well short of the tour. These states will be important variables to track moving forward.

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Soybeans: tighter ending stocks but a larger crop. This was the weakest corner of the complex, and the price action told the story. Against what the trade expected, the USDA delivered both a larger crop, with the yield nudged up to 52.8 bushels, and larger ending stocks, and the market traded it accordingly. Beans initially sold off when the report hit, then rallied back, but the bounce stopped short of the overnight highs and prices faded the rest of the day to close sharply lower, the weakest of the three. On the daily chart, in my opinion, it looks like a failed breakout: beans had been consolidating near highs since the beginning of September and briefly pushed above the range overnight before today’s reversal, the kind of setup that can invite follow-through selling early next week if the momentum longs that chased the move find themselves offside into the weekend.

One thing bulls can point to is demand. Ending stocks only tightened versus a month ago because the USDA raised its export forecast, and the export book is running strong: total U.S. soybean commitments have more than doubled from a year ago. China is buying again ahead of the Trump-Xi meeting later this month, though as the chart below shows, its 2026/27 commitments are still running a little below the five-year, pre-trade-war average pace, so there is room to fill.

But export demand is a shaky leg to lean on in an environment this volatile and geopolitically charged. China appears to be following through on its pledge for now, but the risk of the U.S. slipping back into a trade war has not gone away entirely, and a book built heavily on Chinese buying can unwind as quickly as it came together.

Wheat: quiet at home, heavy abroad. The U.S. balance sheet barely moved, but the world number came in heavier, a mild drag, even as Russia’s Black Sea export problems deepen.

Don’t lose the bigger picture. Step back from the daily chart and today’s dip is a modest pullback in a market that has climbed steadily off its early-summer lows to trade near multi-month highs. There was selling today, but several forces provide a supportive backdrop:

• Managed money came into the report holding large net-long positions across corn and soybeans
• Middle East tensions keep escalating, with crude oil back near $100 a barrel
• El Niño is firmly entrenched and forecast to strengthen into winter
• Russia’s seaborne grain exports fell 62% year over year in August, to just 2.0 million tonnes, as strikes choke off Black Sea shipping
• Now we want to hear from you. How is your yield shaping up versus last year, and does the USDA’s estimates match what you are seeing? Drop your state and observations in the comments.

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