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Agriculture's Big Picture


AgWeb Editor Greg Vincent takes a big-picture look at agriculture and current events.

AgWeb Harvest Maps: Corn Yield to Drop; Soybean Surprise

Oct 11, 2011

 Since early September, farmers across the country have submitted corn yield data to AgWeb on the Corn Harvest Map. These are actual yield numbers, as supplied by farmers. From actual fields. 

To date, more than 600 data points have been supplied by farmers for the Corn Harvest Map.

In late September, we launched the Soybean Harvest Map. There, we have just over 200 data points. 

Both maps are providing somewhat surprising results. 

  Corn Soybeans
USDA Sept. Crop Production Estimated Harvested Acres (million acres)  84.388  73.823

Sept. USDA Estimates

148.1 41.8
Avg. Farmer-Reported Yields on AgWeb
143.3 46.7
USDA Sept. U.S. Crop Estimates 12.497 3.085

Total U.S. Crop based on USDA Sept. Harvested Acres Est. using AgWeb Harvest Map Data 
(bill. bu.)

12.091 3.451

Total crop numbers are calculated by using avg. yields of farmer-reported data to AgWeb, multiplied by harvested acres in USDA's Sept. 2011 Crop Production Report. In cases where states have not reported to AgWeb, USDA's avg. Sept. yield is used to estimate state yield. 

While the yields may surprise some, the real question that needs to be answered is how many acres are actually out there. After all the rain, flooding, drought, disease, windstorms, etc., we may not know that real number until January. 

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