By Jerry Gidel, RJO Futures Research Trading Analyst7/12/2010 4:06 pm CDT
This year's June 30th third quarter corn stocks continue to reverberate within the trade as questions continue to swirl: (1) were some stocks missed, (2) how can this year's feed usage level be so high when this year's cattle and hog numbers are lower and (3) was last year's crop size smaller than previously estimated? Here is our explanation of how this situation possibly developed and what it might mean for 2010/11 crop year.
The USDA's surprise 4.3 billion bu. June 1 corn stock level, 303 million bu. below the average trade expectations, prompted the head-scratching around US agriculture. Reports circulated that some stocks might have been missed at ethanol plants that began receiving their first direct request from the USDA for their June 1 corn stock level. However, given the substantial time before its release, state officials likely were able to secure their needed numbers on follow-up requests or they checked with warehouse officials to get this data.

So where did this year's large corn supplies go? Given the ability to monitor overseas shipments through our ports and utilizing Department of Commerce and Energy information concerning our industrial and ethanol demand, these commercial demand levels are relatively known on an ongoing basis. However, feed demand, with a portion of each year's crop walked off the farm instead of sold through commercial channels, has been determined as the difference between commercial usage and remaining stocks at the end of quarter and the crop year since the USDA began issuing data. Because of this situation, quarterly stock levels both on and off the farm are important to determine this usage.

Utilizing this approach, in the quarter of March to May, the 35% increase in the difference (feed) over 2009 (to 1.3 billion bu.) doesn't seem appropriate when this year's hog and cattle numbers are lower. Looking back at this year's stocks reports, what stands out is a 1.0 billion bu. larger decline in on-farm stocks from last December to this year's June 1 level. What might have occurred involves how American producers normally handle and store their crops each year. Very few producers weigh or test their crops for quality before they store supplies in on-farm storage. In many instances, they rely on the normal output these bins produce when they deliver this output to commercial channels later in the crop year to determine their crop size. Last year's slow maturing crop (lower test weights) and excessive October rains (high moisture) added to last fall's crop issues. This led to numerous reports of undeliverable or reduced bushels being sold from their full bins. In many cases, 5-10% differences occurred, as crops are sold by weight and not by volume, which could be strong reason behind this year's sharp fall in on farm stocks during this year.

Why didn't this situation surface earlier on the March 1 report? This likely occurred because of last winter's drop in prices after the USDA's final production pushed output and yield level, to a record, prompting producers to delay moving stored corn from bins and buyers to utilize their previous purchases, anticipating lower prices from the larger supplies. With only 6-7 weeks remaining after this report until the end of quarter, many producers hadn't became totally aware of this year's unusual shortfall in saleable supplies to adjust their on-farm inventory levels until the next reporting period on June 1. The USDA upped its 2009/10 feed/residual projection by 175 million bu. on its next supply/demand update on July 9 because of this higher disappearance. But, with 50% of this year's 4.3 billion bu. June 1 stocks still in producers' on-farm storage, some additional shrinkage in these supplies could occur in the summer before this year's ending stocks are totaled on September 1. However, this amount will likely be substantially less than last quarter's huge adjustment in corn inventories.

Because of the past year's quality issues reducing salable inventories and also reducing the feed efficiency of the 2009/10 crop, determining the real size of last year's harvest won't ever be known for sure. However, if you cut the crop output by 200 million bu., which seems like a conservative adjustment, last fall's national corn yield declines to 162.1 bu. from the current 164.7 bu. level. With the government and most industry analysts using yields from 1990 to 2009 to determine corn's per-acre trendline in the current era of GMO seeds, 2010's trendline yield is just 159.5 bu. vs. the universally-known 160.8 bu. the USDA used in its Ag Forum projections last winter. Because of this spring's rapid start to the plantings, the USDA upped its yield projection to 163.5 bu. earlier this spring, based upon its 2009 yield 164.7 bu. However, this level seems a bit optimistic when utilizing 162.1 bu. US yield for 2009, making me more comfortable with a 161-162 bu. yield prospect at best for this time of the crop year.

This year's strong plant population and rapid growth from more heat in the growing season will give the USDA more information to make their first yield projection on August 12, but the USDA has also never projected an August corn yield above last year's 159.5 bu. level. When using these adjustments, the USDA's upcoming August corn yield projection, which normally is based upon a plant population count from their observation plots and an average ear weight, may not be able to top the current 163.5 bu. yield currently being used for the 2010/11 crop. This season's ongoing excessive moisture in some regions of the Corn Belt could also lead to reduced nitrogen applications or even soil loss of this important nutrient, which could limit a field's best yields. Given the sizable demand projected for the upcoming year and the potential for more overseas demand if FSU, EU or Chinese crop problems worsen, the current US corn crop doesn't need a lower-than-expected yield forecast to add to its nervousness.

Until a more definitive idea of 2010's corn yield surfaces, new crop prices will likely trade within its recent $3.70 and $4.05 price range, basis December. After the recent downward adjustment in old crop corn supplies and smaller 2010 plantings, an acreage battle between the need for expanding corn and feedgrain areas and the recently revived wheat prices seems to be shaping up. This could limit corn's downside risk this fall into next spring even with trendline corn yields this coming harvest.
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