Darrel Good: Tracking Crop Exports
The  USDA expects that exports of U.S. corn, soybeans, and wheat will be  adversely impacted by the increased supply of these crops in the rest of  the world. Corn production outside the US in the 2011-12 marketing year  is projected to be 6.6 percent larger than production of a year ago.  Argentina, Brazil, China, and the Ukraine are all expected to have  larger crops than those of last year. Of the larger producers, only  Mexico is expected to have a smaller crop. Foreign wheat production is  expected to be up 6.8 percent, led by a 39 percent increase in  production in the countries that make up the former Soviet Union as that  area recovers from the drought of 2010. Foreign soybean production is  expected to increase by 1.4 percent. 
While the outcome of the southern hemisphere crops is far from certain,  crops of the magnitude currently forecast will likely result in smaller  US exports. The question centers on the magnitude of the declines. The  USDA projects year-over-year declines of 12.8 percent for corn, 24.4  percent for wheat, and 11.7 percent for soybeans. The US share of world  exports of these crops in 2010-11 and projected for 2011-12 are as  follows:

The USDA provides weekly estimates of exports and export sales so that  the progress of exports can be monitored. As of November 3rd, current  marketing year exports relative to those of last year were as follows  (percentage change):

Early in the corn marketing year (beginning September 1), shipments are  off to a slow start relative to those of last year. Unshipped sales,  however, are much larger than at this time last year so that total  export commitments exceed those of a year ago by just over two percent.  The year-over-year increase is led by larger sales to China and Mexico.  Sales to Japan, the largest buyer of U.S. corn are down nearly 20  percent. Those sales, however, are expected to catch up to those of last  year. The Census Bureau estimate of September corn exports released  this morning was nearly 6 million bushels larger than USDA inspection  estimate for the month. That difference typically gets larger as the  year progresses. At this early stage of the marketing year, it appears  that corn exports will reach and perhaps exceed the USDA forecast.
Wheat exports for the marketing year that started on June 1 got off to a  very rapid start relative to the USDA projection for the year.  Shipments during the first 22 weeks of the year were only 4 percent  smaller than those of a year ago. Unshipped sales, however, are only  about half as large as those of a year ago. Cumulative Census Bureau  export estimates through September were about 6 million bushels less  than USDA export inspection estimates. It appears that the pace of  shipments will slow dramatically as the year progresses, with the USDA  forecast looking pretty reasonable for the year.
Compared to the very rapid pace of a year ago, soybean exports and  export sales have started very slowly for the year that began on  September 1. Cumulative exports, sales, and total commitments are about  35 percent less than those of a year ago. The Census Bureau estimate of  exports in September was very close to the USDA export inspection  estimate. Of the major buyers of U.S. soybeans, only Mexico has  committed to a larger quantity than that of last year. Last year, the  pace of exports and export sales slowed dramatically after the first  quarter of the marketing year. A steadier pace this year would suggest  that the difference in total commitments between those of this year and  last year will narrow going forward. Still there is a lot of uncertainty  about the strength of export demand for soybeans in the face of  expectations for another very large South American crop.
Conclusion 
With the wheat marketing year well under way, export progress supports  the USDA forecast of a substantial decline in exports for the year and  suggests that prospects of ample year-ending stocks will persist with  prices remaining weak in the near term. 
Early in the corn marketing year, corn export progress offers some  evidence that exports might exceed the USDA projection. The key may be  the size of Chinese business. Good export progress, along with a smaller  crop estimate and ideas that USDA projections for feed and residual use  during the current marketing year may be too conservative should be  supportive to corn prices. 
The early pace of soybean exports relative to that of last year is not  encouraging. Early progress relative to the USDA projection is more  comparable to that of years prior to 2010 and 2009 so that the current  projection may still be attainable. The larger sales for the week ended  November 3rd are encouraging, but unless they are sustained soybean  prices may remain under some pressure. 
Issued by Darrel Good
Department of Agricultural and Consumer Economics
University of Illinois