If you have bought feed in the
last month or have paid close attention to your grocery bill, you have noticed
a significant increase in cost. In
response to the drought of 2012 and the lowest projected corn yield in 17 years, the price of corn has risen to all time record highs. Given that the economic role
of high prices is to ration
demand, the question facing stakeholders in the grain industry (speculators and
commercial interests) is whether the current price of corn is high enough to have accomplished that task?
That is, has the recent
escalation of corn prices been
adequate to curb the quantity demanded down to match expected levels of supply?
Or can we expect prices to go even higher because use has not been reduced enough?
This paper examines the supply/demand balance of the U.S. corn crop in light of the 2012 drought
and a look at each of USDA’s major corn
use categories.
Drought
Since the beginning of May, as
drought conditions have worsened across the Corn Belt, USDA’s estimate of 2012 corn production has
fallen from 14.790 billion bushels to 10.779 billion, the smallest crop since
2006. The national average corn yield has fallen from a projected 166.0 bushels per acre in May to 123.4
bushels per acre. The last time corn
yields were this low was the 113.5 bushel per acre average in 1995. In
response, the monthly average of the nearby futures price for corn has risen from $6.01 per bushel in May to $8.02 thus far in
August, a 33 percent increase.
Exports
The projected corn use cuts USDA made in each of the
categories it uses to monitor corn
consumption vary. The category with the
greatest elasticity of demand is exports. The own price elasticity of demand
measures the quantity response for a given price change. More elastic demand
means that quantity changes more for a given price change. Typically, the
quantity exported is more responsive to price than other uses of corn. While the United States is the
largest exporter of corn in the
world at about 45 percent, its market share of the world corn market is on the decline, down
from over 80 percent in the mid-1990s. USDA has lowered its estimate of U.S. corn exports from 1.9 billion bushels in May down to 1.3 billion
bushels, a 33 percent decrease. In response to the high U.S. price of corn,
foreign corn users will
certainly see lower corn use
estimates of their own, seek corn supplies
from other exporters, and substitute other grains for corn where possible. Another important factor in export
projections is the exchange rate of the dollar in world currency markets. A
stronger dollar makes our export products more expensive in world markets while
a weaker dollar makes U.S. exports more affordable. With the financial and
economic instability in Europe, the dollar has, of late, been relatively strong. In addition to the effect of
the drought on yields, quality may have also been affected. That may leave even
smaller supplies of export quality corn.
Feed Use and Residual
USDA has cut estimated feed use for 2012/2013 from 5.450 billion
bushels in May to 4.075 billion bushels, a 25 percent reduction. Since the
biofuel era began in 2007, the United States has seen a contraction of its livestock sector. As measured by
grain consuming animal units, this number peaked in 2007 at 95.118 million head. The estimate for 2012 is 92.931 million, down
2.3 percent from 2007. Perhaps more importantly and with longer range
implications, the amount of energy feed consumed per grain consuming animal
unit is on the decline. As the livestock industry has increased efficiency and made feed substitutions where it can,
energy feed per grain consuming animal unit is down. This number includes distillers grains added
back to feed use.
Short term livestock adjustments
triggered by high feed costs and
reduced profitability have taken several forms over the last few weeks. Dairy
cow slaughter has increased
sharply over the last month, with weekly slaughter 13 percent over the same
period last year. Weekly dairy cow
slaughter is the largest for late July-early August since 1996. Sow slaughter has increased 6 percent from year ago
levels over the last month. Adjustment
in livestock markets also takes the form of lower prices for feeder weight
animals. Feeder pig prices have declined 60 percent in over the last 2 months,
while feeder and stocker calves are down more than 20 percent in the Southern
Plains.
Food, Seed, and Industrial Use (Ethanol)
Corn for fuel use is now projected at 4.5 billion bushels in
2012/2013, down from 5.0 billion bushels in May (-10 percent). High corn prices have forced the closure of several corn ethanol plants around the country
and ethanol blenders can use credits from ethanol use in previous years to
offset some of the current blending requirements. Ethanol use in 2012 is running below that of
2010 and 2011 and ethanol stocks above those same time periods. The 2012
monthly ethanol stocks to use ratio is above last year by about 6 percent. Food use is the smallest and most price
inelastic of all corn
consumption categories. For the last five years food use has ranged from a high of 1.407 billion bushels to a low
of 1.276 billion bushels, a range of 131 million bushels. For 2012/2013, USDA
cut food use from 1.425 billion bushels in May to 1.350 billion bushels, a 75
million bushel, or 5 percent, decrease.
Constraints to Adjustment
The ability of businesses and
people to adjust and the speed of adjustment to higher prices are larger in the
longer run. In economic terms, the short run (a few months) is more price
inelastic than the longer run that allows people more time to adjust. Given
more time, greater adjustments to high
prices can be made. Some constraints that slow the short run adjustment in corn use include the industry
structure of corn users, the
financial capacity of the industry players, the ability to adjust refinery
gasoline blends, the ability to reduce animal breeding schedules and finished
weights, contracts for production delivery that are already in place running
well into next year, and the reaction of consumers to higher prices for
finished products made with corn.
Summary
While this paper has focused on quantity demand
adjustments by users, the other market role of high prices is to increase production. It is likely that the
December 2013 futures corn price
of $6.55 per bushel (as of this writing) will cause more acres to be planted in
2013 than the 96.4 million estimated planted acres in 2012. It will encourage more corn acres to be planted in South America, as well. And it might
buy more acres into other feed grains. Combined with changes in corn use and efficiencies forced on
users by high prices that are
slow to change back, increased future production is very likely to have a
larger negative effect on corn
prices in the future. Based on USDA’s
current use projections, it appears high
corn prices have adequately reduced corn use to match current supply estimates. If production declines
further, there appears to be some slack in the consumption categories to allow
for further tightening. Of course, a significant revision downward in
production (below 10 billion bushels) or quality concerns that limit use (i.e.
aflatoxin, low test weights) could provide the impetus for another leg up in
prices.