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Corn price rout is near its end - so new market model shows

Some good news for US farmers on corn prices, at last.

Values may fall further but not by that much, even if the US does produce a huge harvest this year, according to analysis by Macquarie.

Some lowball figures have been going around this week for Chicago futures, as low as $3.50 a bushel.

That figure is "definitely out there", Jerry Gidel, chief feed grains analyst at Chicago broker Rice Dairy, said.

"Everyone seems in a race to the bottom," in price terms.

'No longer works'

However, a pricing model by Macquarie suggests that the floor may be significantly closer.

The bank has drawn up the model after finding that the traditional reliance on the stocks-to-use ratio which offers a guide to the extent that buyers will need to pay up for supplies "no longer seems to work".

"There is a link, but there is not as good a correlation as there used to be," Macquarie analyst Chris Gadd told

Plugging historic pricing levels, related to stocks-to-use figures, suggests that soybeans should be heading for $6 a bushel, and corn to about $2 a bushel.

Production costs

The breakdown in the relationship is down to a step up in agricultural costs.

As farmers will know, while higher crop prices in recent years have swollen their revenues, they have faced pressure from higher costs of many inputs (with the notable exception of fertilizers).

"Cost of production has changed, so modelling needs to factor in increased land valuations in the US, and Brazil's transportation charges," Mr Gadd said.

And plugging an estimate for cost of production into the mix shows corn prices finding support well above anything beginning with a $2.

Macquarie curve

The result, based on a farmer renting land in Illinois, and on data since 1990, shows a kind of sideways s-shaped curve, where a stocks-to-use ratio below 10% sees prices trade 20-100% above the cost of production.

When the stocks to use ratio is at 10-15%, prices trade, at best, with a 20% premium to production costs.

The current situation, with stocks-to-use over 15%, implies prices can stay at the cost of production, but with a potential fall of 20% below.

With Macquarie estimating the cost of production at $4.12 a bushel, "we forecast the cash price in Illinois should trade about $3.75 a bushel", Mr Gadd said.

"In reality there is maybe not that much more downside from here."

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