From August 17 through August 20, 2026, scouts with the Pro Farmer Crop Tour traveled through South Dakota, Ohio, Indiana, Nebraska, Illinois, Iowa and Minnesota to measure corn and soybean potential across some of the most important production areas in the United States. They found drought, excessive rainfall, fewer ears, pollination problems, shorter grain length and expanding disease pressure, but also fields capable of exceptional yields. The findings matter because the U.S. crop can still be very large, yet the tour raised a more consequential question for farmers and commodity markets: how much of the potential standing in fields today will actually reach the combine?

Across four days, the tour produced a picture of a deeply uneven Corn Belt, with no single weather event or agronomic problem explaining the 2026 crop. South Dakota and Nebraska showed the consequences of limited moisture; Ohio, Indiana and Illinois carried scars from excessive rainfall; Iowa combined some of the strongest corn of the tour with missing ears and disease concerns; and Minnesota exposed how drought and shorter grain length can reduce potential inside fields that still look healthy from the road. The recurring lesson was that attractive plants and large ears do not automatically translate into yield when stand productivity, pollination and kernel development are examined more closely.

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South Dakota delivered the first warning on Day 1. Chip Flory initially encountered corn samples estimated near 189 and 194 bu. per acre, but the picture weakened as scouts continued across the state. They found barren stalks, tip-back and maturity that was more advanced than desired, with some checks showing five or six missing ears per 60 feet of row. Planting dates, early cold and excessive heat during pollination were cited among the factors involved. USDA's August 12 forecast put South Dakota corn at 151 bu. per acre, down sharply from 171 bu. per acre in 2025, reinforcing concerns about how much yield the western portion of the tour could preserve.

Pro Farmer Crop Tour 2026 - South Dakota Corn

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Soybeans provided a somewhat more encouraging signal in South Dakota, although the crop was far from secure. Scouts reported individual samples around 1,550 and 1,150 pods in the 3-by-3-foot square used by the Crop Tour, and recent rainfall had encouraged new pods at upper nodes. Still, Karen Braun found counts roughly 9% below the previous year. The crop's ability to convert those pods into yield remains dependent on moisture during seed fill, an important distinction between pod counts and harvested bushels. USDA projected South Dakota soybeans at 41 bu. per acre, six bushels below the 47 bu. per acre recorded in 2025.

Pro Farmer Crop Tour 2026 - South Dakota Soybeans

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Ohio represented almost the opposite agronomic problem. Scouts encountered mud, standing water and a planting season repeatedly interrupted by rainfall, leaving corn at widely different stages of development. Some fields were still at blister stage, while one had only recently completed pollination. That uneven maturity means the calendar itself is now part of the yield equation because a significant portion of grain fill remains ahead. USDA projected Ohio corn at 183 bu. per acre, two bushels below 2025, while its soybean estimate reached 58 bu. per acre, five bushels - or about 9.4% - above the previous year.

Pro Farmer Crop Tour 2026 - Ohio Corn

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Excess moisture also created risks that may not yet be fully visible above ground. Scouts raised concerns about kernel abortion and nitrogen leaching, while deteriorating lower leaves suggested at least some nutrient deficiency. Bacterial leaf blight and northern corn leaf blight were also observed, although disease pressure was not characterized as overwhelming. Soybeans appeared to tolerate saturated conditions better than corn in some fields, but high moisture creates its own uncertainty. The key question is how much damage from prolonged saturation has already occurred below the canopy and whether later reproductive stages will expose losses that are difficult to recognize during an August field check.

Pro Farmer Crop Tour 2026 - Ohio Soybeans

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Day 2 moved through Indiana after rainfall described in the underlying tour report as an extremely rare event. Scouts expected substantially worse conditions, yet many fields showed surprising resilience. Maturity, however, became another concern. Corn was denting but appeared less advanced than expected for mid-August. USDA had projected an Indiana yield of 206 bu. per acre, versus 204 in 2025, while the Crop Tour's physical measurements pointed to weaker components beneath the canopy. Yield estimate, ear count and grain length were all below year-earlier levels, emphasizing again that a field's visual appearance can conceal limitations that emerge only after counting and measuring.

Pro Farmer Crop Tour 2026 - Indiana Corn

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Indiana reinforced one of the tour's most important agronomic lessons: a single impressive ear is not enough to estimate field yield. Ear counts failed to match the previous year's level, particularly farther east. Soybeans showed similar variability. Some fields had absorbed the heavy rainfall remarkably well, while depressions and areas near waterways still contained standing water with the potential for severe losses. Differences in plant size and pod numbers within the same field made early yield estimates especially difficult. For growers, crop consultants and insurers, that kind of intra-field variability can complicate harvest expectations, marketing plans and risk-management decisions.

Pro Farmer Crop Tour 2026 - Indiana Soybeans

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Nebraska revealed another divide: irrigated versus dryland corn became a major determinant of yield potential. USDA projected the state at 183 bu. per acre, 11 bushels below the 194 recorded in 2025. Scouts found more tip-back than in previous years and linked part of the damage to pollination stress and unusually warm nights. Yield effects in field checks cited by the tour ranged from roughly 8% to 12%. Disease was less prominent, and southern rust was not reported in the observations used for the tour account. Water availability, rather than disease, emerged as the dominant dividing line between fields with strong potential and those showing significant stress.

Pro Farmer Crop Tour 2026 - Nebraska Corn

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Nebraska's numbers show where part of the yield reduction developed. Kernels around the ear were essentially unchanged, but ear count and grain length both declined, a combination capable of removing substantial bushels even when individual ears appear acceptable. Dryland fields were far more variable than irrigated acres. Soybeans showed a similar dependence on available moisture. Brent Judisch cited rainfall deficits of roughly 40% to 50% during July and August, while USDA projected Nebraska soybean yield at 57 bu. per acre, well below the 65.5 bu. per acre registered in 2025. For producers, irrigation access became one of the clearest separators of crop potential on the western leg.

Pro Farmer Crop Tour 2026 - Nebraska Soybeans

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Day 3 shifted attention to Illinois, where Lane Akre described the crop as "underwhelming." The state had endured its sixth-wettest June on record and an exceptionally wet start to August, according to the material used for the tour analysis. Planting delays, rain and wind produced everything from good stands to completely flooded low areas. From the highway, much of the corn could look impressive. Inside the fields, however, scouts found large ears but not enough ears to support the yield expectations suggested by the canopy. Late nitrogen deficiency and pollination problems added further uncertainty ahead of grain fill.

Illinois soybeans showed somewhat better potential but carried a growing disease burden. Pod counts were described as disappointing, and Sudden Death Syndrome, or SDS, appeared in fields, although not universally. Excess moisture had become visible in corn as well, including kernels germinating on the ear and an increased concern about ear mold. Conditions improved as scouts moved west. Importantly, the Day 3 material available for this article did not provide statewide Illinois tables equivalent to those released for several other states. No comparable Illinois figures are therefore inserted here, preserving the distinction between reported tour data and numbers that cannot be supported by the source.

Western Iowa then produced one of the most dramatic contrasts of the entire tour. After two relatively unimpressive early samples, Ted Seifried encountered a field estimated at 294 bu. per acre, the highest corn yield he said he had personally seen on a Crop Tour. Chip Flory described the crop as generally healthy, yet even there scouts found emergence issues, tip-back, shorter grain length, barren plants and populations near 32,000 plants per acre that did not translate fully into productive ears. Disease pressure in corn appeared comparatively limited. The result illustrated why exceptional individual fields can coexist with broader concerns about statewide or national yield potential.

The concern shifted from corn to soybeans in western Iowa. Scouts reported SDS, white mold and brown stem rot, with disease linked to conditions that had developed since June. One observation captured the broader theme of the week: plants that looked healthy from the road revealed damage when scouts pulled them and examined stems and roots more closely. The crop still had time to fill pods if weather cooperated, but the distinction between potential and harvested production became increasingly important. An August pod count measures what the plant may produce; it does not guarantee how many bushels will ultimately cross the scale at harvest.

Day 4 completed the tour through Iowa and Minnesota and strengthened that warning. Eastern Iowa produced some of the strongest corn encountered all week. Pro Farmer economist Lane Akre described three consecutive stops northwest of Cedar Falls as a "honey hole," with large ears, deep kernels and relatively little disease pressure. Yet even those strong fields were missing a yield component. Akre expected roughly 110 to 115 ears in a 30-foot row but found closer to 100 to 105. Deep kernels could help compensate if grain fill remains favorable, but the reduced ear population again showed why appearance alone can overstate the productive capacity of a field.

Pro Farmer Crop Tour 2026 - Iowa Corn

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Iowa's statewide measurements capture the contradiction. The Crop Tour yield estimate was 2.24% below 2025 and grain length fell 3.27%, while kernels around increased 1.58%. USDA's August 12 forecast, meanwhile, placed Iowa corn at a record 216 bu. per acre, about 35 bushels above the national forecast of 180.7. The two numbers should not be treated as direct substitutes because Pro Farmer and USDA use different methodologies, but the contrast makes the next official production update especially important. Ken Ferrie also reported southern rust and tar spot in some Iowa fields, with an estimated 30 to 35 days of development still remaining for disease to build.

Soybeans in Iowa maintained considerable promise. Ferrie described pod counts in the fields he visited as strong enough to support an above-average crop, while Flory cautioned against overlooking soybean potential. Statewide tour data added nuance: pods in the 3-by-3-foot sample were 1.55% below 2025 but remained above the three-year average, while moisture was 9.68% higher year over year. That combination leaves substantial productive capacity but also reinforces the importance of late-season conditions. Pod numbers alone cannot determine yield if disease expands, moisture conditions change or seed fill fails to reach the weight implied by the crop's current appearance.

Pro Farmer Crop Tour 2026 - Iowa Soybeans

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Minnesota added another layer of variability. In western and southern portions of the state, scouts found different ways for yield to fall short even when plants looked healthy. One field contained only 79 ears, while other samples had acceptable populations but disappointing grain length. Flory estimated corn yields from 158 to 203 bu. per acre across Brown, Watonwan and Blue Earth counties during Thursday morning, with only one of those early samples exceeding 200. Conditions improved later in the day, and his average across nine stops reached 201 bu. per acre, close to USDA's 2026 Minnesota forecast of 197 bu. per acre.

Pro Farmer Crop Tour 2026 - Minnesota Corn

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Minnesota illustrates why grain length became one of the most important metrics of the 2026 tour. Ear count increased 0.19% and kernels around rose 1.62%, yet the yield estimate declined 1.90% from 2025 as grain length fell 3.34%. Emily Carolan, Pro Farmer Crop Tour lead data analyst, identified a broader pattern: among 33 districts where corn ear-length measurements had been reported, only six averaged seven inches or more. Carolan noted that consistent lengths around 7, 7.2 or 7.3 inches are generally associated with the bigger yields growers seek. Shorter grain length therefore linked seemingly isolated problems across multiple regions.

Southwest Minnesota showed the consequences of inadequate rainfall even more clearly. Cory Tilstra, who farms near Luverne, reported only 10 inches of rain during the season, roughly half of normal, including about six weeks without rain during pollination. His corn had accumulated around 2,200 GDUs and was roughly 10% ahead of normal, but the ears revealed the cost of that rapid, dry development. Tilstra found zippering and approximately two inches of tip-back on some hybrids. Recent rainfall may support remaining kernel fill, yet he believes irreversible yield damage already occurred, even though lower moisture also helped keep disease pressure lighter than the previous year.

Minnesota soybeans presented a different mix of signals. Pods in the 3-by-3-foot sample increased 0.80% from 2025 and stood well above the three-year average, while the tour's moisture measure fell 21.43%. USDA's August 12 Crop Production estimate placed Minnesota soybean yield at 48 bu. per acre, with about 7.33 million harvested acres and production near 351.8 million bushels. Recent rains could support pod fill, but producers cannot yet know how many reproductive sites were lost during the earlier dry period. As elsewhere on the tour, the current numbers represent biological potential rather than a guarantee of final harvested yield.

Pro Farmer Crop Tour 2026 - Minnesota Soybeans

Source: Pro Farmer Crop Tour 2026 / Farm Journal.

Four Days Across the Corn Belt: A Big Crop That Can Still Lose Bushels

The completed tour shows that the problem changes by geography, but the consequences converge on final yield. South Dakota and Nebraska dealt with moisture limitations; Ohio, Indiana and Illinois carried the effects of too much water; western Iowa demonstrated that truly exceptional fields still exist; Iowa combined strong ears with reduced ear count and shorter grain length; and Minnesota showed how drought stress can remain hidden inside crops that appear healthy. Soybeans faced their own mix of moisture stress and disease. The tour therefore did not reveal one Corn Belt story, but a collection of local agronomic histories competing to determine the national production outcome.

Source: Analysis based on Pro Farmer Crop Tour 2026 / Farm Journal reports from all four days.

One of the strongest signals for corn was the repetition of lower ear counts across multiple parts of the Corn Belt, joined by shorter grain length as a recurring limitation. Flory said the pattern made it difficult for him to envision a national average above 180 bu. per acre. USDA's August 12 national forecast stood at 180.7 bu. per acre. That difference is small numerically but potentially large when multiplied across millions of harvested acres. The next USDA Crop Production report, scheduled in the source material for September 11, will therefore become a major checkpoint for whether official objective-yield work begins to capture some of the same issues identified by tour scouts.

None of that automatically makes 2026 a poor crop year. Flory argued that the crop still has the potential to produce the second- or third-highest national average yield on record. That distinction matters. Comparing every field with an unusually strong 2025 crop can make an historically large harvest appear disappointing even when production remains substantial. The key market question is therefore not simply whether U.S. farmers will produce a big corn crop. They probably can. The more consequential question is whether final production will be large enough to match the most optimistic supply expectations already embedded in USDA projections and commodity markets.

Even a modest change in national yield can affect the entire agricultural balance sheet. Fewer bushels would alter total production, ending stocks, commodity prices, storage decisions, crop insurance outcomes, basis opportunities and supply-chain planning for elevators, co-ops, ethanol plants, livestock feeders and exporters. If the supply side ultimately tightens, market attention will increasingly shift toward demand. Export sales, domestic feed use and biofuel consumption would then determine how quickly inventories are drawn down. That is why a change measured in only one or two bushels per acre can matter far beyond the farm gate when it is applied across the U.S. corn acreage base.

The Pro Farmer Crop Tour should also not be read as a substitute for USDA's official production estimates. The tour consists of physical field observations collected under its own sampling protocol, while USDA forecasts are produced through separate survey and objective-yield methodologies. Comparing the two can be informative, but treating them as interchangeable would overstate what either dataset can prove. The tour's greatest value is different: scouts enter fields and expose agronomic details that statewide averages can hide, showing how two fields separated by only a few miles can carry very different histories of rainfall, planting conditions, pollination, disease and kernel development.

After four days, the most important conclusion is therefore not contained in a single yield number. The Corn Belt retains substantial productive capacity, but some potential has already been lost and another portion remains vulnerable. Corn still has grain to fill, soybeans must hold and finish pods, and SDS, white mold, southern rust, tar spot and other diseases still have time to influence results. The 2026 Pro Farmer Crop Tour found enough strength to support expectations for a large U.S. crop, but enough hidden weakness to challenge the most optimistic scenarios. The final question is no longer whether the crop has potential - it is how many of those bushels will survive to the combine.

Editorial Note

From the AgroLatam newsroom, we would like to recognize and congratulate the entire Pro Farmer Crop Tour team - scouts, analysts, agronomists, journalists and field staff - for the outstanding work carried out over four intensive days across the U.S. Corn Belt.

Their field observations, measurements and on-the-ground reporting provide valuable insight for farmers, agronomists, market participants and the broader U.S. agricultural sector. The scope, consistency and transparency of the 2026 tour once again demonstrate the importance of field-based analysis in understanding the real condition and yield potential of U.S. crops.

AgroLatam congratulates everyone involved in making this demanding and valuable effort possible, and recognizes their contribution to providing the agricultural community with timely, field-level information at a critical stage of the crop season.