{"article":{"annotation":{"article_id":"usda-corrects-september-corn-yield-estimates-after-weighting-error","available_at":"2026-10-25T15:35:59.294989Z","geography_revision":"ef6ee0010dda5fe7b240fd514749b43e214c57da73222d2e40ec83b276dd0977","id":"53564e9c5295d84682b173531ba8dba0b611db2c9117e93ae21200896a3a29f5","input_sha256":"0eabc6ef1548540aa2e13bc8616885e95b27dc747ed13def0b1a45c7bbec93f3","limitations":["Rule-derived subjects are candidates, not verified editorial labels or calibrated model probabilities.","Coverage is distinct from event location. Unknown country/city/coordinates remain absent; no automatic geocoding.","Article geometries keep their stated precision and methodology; reproducing them is not independent coordinate verification."],"method":"controlled-rules-v1","places":[{"admin1":null,"city":null,"coordinate_note":null,"coordinate_reference_system":"OGC:CRS84","coordinate_source":null,"country":"US","evidence":[{"field":"country","language":"en","note":"Explicit preserved editorial country/region; no city or national centroid inferred","source_urls":["https://data.nass.usda.gov/Newsroom/Notices/2026/10-23-2026.php","https://data.nass.usda.gov/Newsroom/Notices/2026/10-24-2026.php","https://www.nass.usda.gov/Surveys/Guide_to_NASS_Surveys/Objective_Yield/index.php","https://www.nass.usda.gov/Publications/Methodology_and_Data_Quality/Advanced_Topics/Yield%20Forecasting%20Program%20of%20NASS_2023.pdf"]}],"geometry":null,"id":"iso3166-1:US","kind":"country-or-area","labels":{"ar":"الولايات المتحدة الأمريكية","en":"United States of America","es":"Estados Unidos de América","fr":"États-Unis d’Amérique"},"match_status":"candidate","precision":"regional","role":"coverage","uncertainty_m":null}],"rules_sha256":"fb5ad3c27c91cb840f7a0a05f7f64a5cb26ad0374409ff9457f277c7092e22b4","schema_version":1,"subjects":[{"concept_id":"medtop:20000210","confidence":null,"confidence_method":null,"evidence":[{"field":"category+topics","language":"en","note":"Preserved editorial category/topic; broad candidate only","source_urls":["https://data.nass.usda.gov/Newsroom/Notices/2026/10-23-2026.php","https://data.nass.usda.gov/Newsroom/Notices/2026/10-24-2026.php","https://www.nass.usda.gov/Surveys/Guide_to_NASS_Surveys/Objective_Yield/index.php","https://www.nass.usda.gov/Publications/Methodology_and_Data_Quality/Advanced_Topics/Yield%20Forecasting%20Program%20of%20NASS_2023.pdf"]}],"method":"controlled-rules-v1","rule_id":"agriculture-broad","status":"candidate"}],"taxonomy_revision":"1f2db31d811fca07e99b16d402c10e2cc2965c9df1c7b41d9be348b40a24e7fb","taxonomy_version":"IPTC Media Topics 2026-Q2"},"api_url":"https://newsverum.com/api/v1/articles/usda-corrects-september-corn-yield-estimates-after-weighting-error?lang=en","category":"agriculture","content":{"key_points":[],"paragraphs":["The U.S. Department of Agriculture’s National Agricultural Statistics Service (NASS) said on 23 October that it had found a processing error in September corn data and corrected the affected figures in its reports and Quick Stats. An additional explanation on 24 October described the cause in more detail: incorrect acreage weights had been used to combine irrigated and non-irrigated objective-yield observations for Kansas and Nebraska.","The correction affected September plant populations and ear counts in both states, September ten-state averages for those measures, and corn yield estimates for Kansas, Nebraska and the United States. NASS’s 24 October notice gave corrected September yield estimates of 119 bushels per acre for Kansas, 3 bushels below the prior figure; 182 for Nebraska, up 5; and 178.8 for the United States, up 0.3.","The agency separately reviewed and validated its October data and estimating procedures and said the October yield and production forecasts published on 9 October were unchanged. That distinguishes the September correction from the newer October forecasts. The notice does not restate the October forecast figures; it says they remained the same after review.","NASS said it would introduce additional pre-publication checks to verify acreage weights and validate objective-yield calculations. It is also evaluating further ways to strengthen quality-control procedures. The agency linked the review to concerns raised after the October crop report and described the review as comprehensive across its September and October corn-estimation procedures.","NASS explains that corn yield estimates draw on two complementary survey approaches. Its Agricultural Yield Survey asks growers for a monthly assessment of yield prospects, while the Objective Yield Survey uses counts and measurements from random plots in sampled fields. The agency’s methods manual says the objective data reflect growing conditions as of the start of each month and are combined with broader survey information to produce forecasts. September plant and ear measures are therefore inputs to a layered estimating process, rather than counts of the final national harvest.","The corrections were entered into NASS Crop Production reports and Quick Stats. Users should therefore rely on the corrected September estimates rather than the original September figures. By contrast, NASS said its October forecasts had not changed. The agency thanked farmers and data users who raised concerns and said it remained committed to promptly communicating and correcting errors in published statistics."],"sections":[]},"corrections":[],"country":"US","data":{"blocks":[{"columns":[{"key":"area","label":{"en":"Geography","tr":"Coğrafya"},"language":"en","type":"text"},{"key":"corrected","label":{"en":"Corrected September estimate","tr":"Düzeltilmiş eylül tahmini"},"language":"en","type":"text"},{"key":"change","label":{"en":"Change from initial estimate","tr":"İlk tahmine göre değişim"},"language":"en","type":"text"}],"description":{"en":"Corrected September estimates and changes from the initial release, as provided in NASS’s 24 October explanation.","tr":"NASS’ın 24 Ekim ek açıklamasında verdiği düzeltilmiş eylül tahminleri ve ilk yayıma göre değişim."},"id":"data-usda-corn-correction-2026-09","methodology":{"en":"Values are transcribed from NASS’s official follow-up notice; bushels per acre remain in text cells because no dedicated unit code is registered. The table concerns September estimates; the agency said October forecasts were unchanged.","tr":"Değerler NASS’ın resmî ek açıklamasından aynen alınmıştır; bushel/acre birimi metin hücresinde bırakılmıştır çünkü birim kayıtlarında ayrı bir birim kodu yoktur. Bu tablo eylül tahminlerini gösterir; ekim tahminleri kurumca değişmediği bildirilmiştir."},"rowTranslations":[{"area":{"en":"Kansas","tr":"Kansas"},"change":{"en":"Down 3 bushels per acre","tr":"Acre başına 3 bushel azaldı"},"corrected":{"en":"119 bushels per acre","tr":"Acre başına 119 bushel"}},{"area":{"en":"Nebraska","tr":"Nebraska"},"change":{"en":"Up 5 bushels per acre","tr":"Acre başına 5 bushel arttı"},"corrected":{"en":"182 bushels per acre","tr":"Acre başına 182 bushel"}},{"area":{"en":"United States","tr":"ABD"},"change":{"en":"Up 0.3 bushels per acre","tr":"Acre başına 0,3 bushel arttı"},"corrected":{"en":"178.8 bushels per acre","tr":"Acre başına 178,8 bushel"}}],"rows":[{"area":"Kansas","change":"Down 3 bushels per acre","corrected":"119 bushels per acre"},{"area":"Nebraska","change":"Up 5 bushels per acre","corrected":"182 bushels per acre"},{"area":"United States","change":"Up 0.3 bushels per acre","corrected":"178.8 bushels per acre"}],"sourceUrls":["https://data.nass.usda.gov/Newsroom/Notices/2026/10-23-2026.php","https://data.nass.usda.gov/Newsroom/Notices/2026/10-24-2026.php","https://www.nass.usda.gov/Surveys/Guide_to_NASS_Surveys/Objective_Yield/index.php","https://www.nass.usda.gov/Publications/Methodology_and_Data_Quality/Advanced_Topics/Yield%20Forecasting%20Program%20of%20NASS_2023.pdf"],"title":{"en":"Corrected September corn yield estimates","tr":"Düzeltilen eylül mısır verim tahminleri"},"type":"table","updatedAt":"2026-10-25T15:32:43Z"}],"version":1},"data_downloads":[{"formats":{"csv":"https://newsverum.com/api/v1/articles/usda-corrects-september-corn-yield-estimates-after-weighting-error/data/data-usda-corn-correction-2026-09?lang=en&format=csv","json":"https://newsverum.com/api/v1/articles/usda-corrects-september-corn-yield-estimates-after-weighting-error/data/data-usda-corn-correction-2026-09?lang=en&format=json"},"id":"data-usda-corn-correction-2026-09"}],"data_types":["table"],"editorial_illustration":{"alt":"Conceptual illustration of fields, soil and irrigation data.","asset_id":"newsverum-v1-agriculture","avif_variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-480.avif","width":480},{"height":480,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-720.avif","width":720},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-960.avif","width":960},{"height":800,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-1200.avif","width":1200},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-1536.avif","width":1536}],"credit":"Newsverum","documentary":false,"height":1024,"kind":"symbolic-editorial-illustration","language":"en","scope":"topic","url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-1536.webp","variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-480.webp","width":480},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-960.webp","width":960},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-1536.webp","width":1536}],"width":1536},"event_id":"event-7ef61e8a-cf34-5574-b438-e0dab648421c","event_period":"2026-10-23","event_period_basis":"event-or-reference-period","id":"usda-corrects-september-corn-yield-estimates-after-weighting-error","image":null,"importance":0.6,"language":"en","modified_at":"2026-10-25T15:35:21+00:00","publication_basis":"publication-record","published_at":"2026-10-25T15:35:21+00:00","reading_minutes":3,"region":"world","section_illustration":{"alt":"Conceptual illustration of fields, soil and irrigation data.","asset_id":"newsverum-v1-agriculture","avif_variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-480.avif","width":480},{"height":480,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-720.avif","width":720},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-960.avif","width":960},{"height":800,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-1200.avif","width":1200},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-1536.avif","width":1536}],"credit":"Newsverum","documentary":false,"height":1024,"kind":"symbolic-editorial-illustration","language":"en","scope":"section","url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-1536.webp","variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-480.webp","width":480},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-960.webp","width":960},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/agriculture-1536.webp","width":1536}],"width":1536},"slug":"usda-corrects-september-corn-yield-estimates-after-weighting-error","sources":[{"checkedAt":"2026-10-25","name":"USDA National Agricultural Statistics Service, Agricultural Statistics Board","publishedAt":"2026-10-23","url":"https://data.nass.usda.gov/Newsroom/Notices/2026/10-23-2026.php"},{"checkedAt":"2026-10-25","name":"USDA National Agricultural Statistics Service, Additional Information Regarding September Crop Production Notice","publishedAt":"2026-10-24","url":"https://data.nass.usda.gov/Newsroom/Notices/2026/10-24-2026.php"},{"checkedAt":"2026-10-25","name":"USDA NASS, Objective Yield Survey methodology","publishedAt":"2026-10-07","url":"https://www.nass.usda.gov/Surveys/Guide_to_NASS_Surveys/Objective_Yield/index.php"},{"checkedAt":"2026-10-25","name":"USDA NASS, The Yield Forecasting Program of NASS (2023), Chapter 5","url":"https://www.nass.usda.gov/Publications/Methodology_and_Data_Quality/Advanced_Topics/Yield%20Forecasting%20Program%20of%20NASS_2023.pdf"}],"summary":"USDA revised September corn yield estimates for Kansas, Nebraska and the United States, left October forecasts unchanged and said it would add pre-publication checks.","text":"USDA revised September corn yield estimates for Kansas, Nebraska and the United States, left October forecasts unchanged and said it would add pre-publication checks.\n\nThe U.S. Department of Agriculture’s National Agricultural Statistics Service (NASS) said on 23 October that it had found a processing error in September corn data and corrected the affected figures in its reports and Quick Stats. An additional explanation on 24 October described the cause in more detail: incorrect acreage weights had been used to combine irrigated and non-irrigated objective-yield observations for Kansas and Nebraska.\n\nThe correction affected September plant populations and ear counts in both states, September ten-state averages for those measures, and corn yield estimates for Kansas, Nebraska and the United States. NASS’s 24 October notice gave corrected September yield estimates of 119 bushels per acre for Kansas, 3 bushels below the prior figure; 182 for Nebraska, up 5; and 178.8 for the United States, up 0.3.\n\nThe agency separately reviewed and validated its October data and estimating procedures and said the October yield and production forecasts published on 9 October were unchanged. That distinguishes the September correction from the newer October forecasts. The notice does not restate the October forecast figures; it says they remained the same after review.\n\nNASS said it would introduce additional pre-publication checks to verify acreage weights and validate objective-yield calculations. It is also evaluating further ways to strengthen quality-control procedures. The agency linked the review to concerns raised after the October crop report and described the review as comprehensive across its September and October corn-estimation procedures.\n\nNASS explains that corn yield estimates draw on two complementary survey approaches. Its Agricultural Yield Survey asks growers for a monthly assessment of yield prospects, while the Objective Yield Survey uses counts and measurements from random plots in sampled fields. The agency’s methods manual says the objective data reflect growing conditions as of the start of each month and are combined with broader survey information to produce forecasts. September plant and ear measures are therefore inputs to a layered estimating process, rather than counts of the final national harvest.\n\nThe corrections were entered into NASS Crop Production reports and Quick Stats. Users should therefore rely on the corrected September estimates rather than the original September figures. By contrast, NASS said its October forecasts had not changed. The agency thanked farmers and data users who raised concerns and said it remained committed to promptly communicating and correcting errors in published statistics.","title":"USDA corrects September corn yield estimates after weighting error","topics":[],"translations":[{"api_url":"https://newsverum.com/api/v1/articles/usda-corrects-september-corn-yield-estimates-after-weighting-error?lang=tr","language":"tr","url":"https://newsverum.com/tr/news/usda-corrects-september-corn-yield-estimates-after-weighting-error"},{"api_url":"https://newsverum.com/api/v1/articles/usda-corrects-september-corn-yield-estimates-after-weighting-error?lang=en","language":"en","url":"https://newsverum.com/en/news/usda-corrects-september-corn-yield-estimates-after-weighting-error"}],"url":"https://newsverum.com/en/news/usda-corrects-september-corn-yield-estimates-after-weighting-error"},"version":"1"}