Good said the weakness in July futures reflects increasing expectations that old crop inventories, while tight, will be sufficient until new crop supplies are available. Old-crop export sales have been brisk, but the pace of shipments remains well below the pace needed to reach the USDA projection of 1.7 billion bushels for the year.

The pace of ethanol production suggests that corn use in that category will not exceed the USDA projection of 5 billion bushels.

“Use in the feed and residual category remains difficult to predict, but on the surface, declining animal numbers and prospects for increased wheat feeding point to weaker feed demand this summer.

“In general, the old-crop price premium provides an incentive for users to delay consumption as much as possible until new crop supplies are available,” Good said.

Good reported that the expiring May futures contract has been much stronger than the rest of the futures complex and is currently trading about 48 cents premium to July futures.

That premium has increased about 38 cents in the past two weeks. Similarly, old-crop basis levels have been extremely strong since harvest and have continued to strengthen in recent weeks.

The average spot cash price of corn in south central Illinois, for example, was 31 cents over July futures on May 4. In the previous 6 years, the average cash price on that date was 25 cents under July futures.

Declining futures prices, particularly for deferred contracts, reflect the expectations of adequate old crop stocks and prospects for a substantial increase in stocks next year, he added.

In that context, the higher price for May futures and strengthening basis levels remain a bit of a mystery.  In general, a strong basis reflects tight stocks or a slow pace of movement of corn to market relative to the pace of consumption.

“As pointed out in previous articles, a strong basis pattern over an extended period, such as experienced this year, is unusual,” Good said.

“Tight stocks that would result in a strong basis do not generally develop until late in the marketing year. As a result, most have attributed the strong basis to an ongoing slow pace of sales by producers.

“If that is the case, basis levels should be expected to collapse whenever producers give up and move old crop stocks in preparation for harvest of a large crop.   

“Alternatively, the long period of strong basis may reflect a higher rate of feed and residual use than has been revealed to date and the cash market’s expectation of much tighter year-ending stocks.

“If that is the case, a strong basis may persist through the end of the marketing year. The question boils down to which market, cash or futures, has better anticipated consumption and ending stocks.” Good said.

Price behavior after the May contract expires next week may provide some clues about the correct scenario.

The June 1 stocks estimate will be more revealing and will provide for a more accurate forecast of year-ending stocks.