Tag: price elasticity of supply

The prices of grains and other foodstuffs are rising rapidly. Wheat prices rose some 40 per cent in July and have continued to rise rapidly since. In June wheat futures were trading at around 450 US cents/bushel. By early September, they were trading at around 700 US cents/bushel. Global food prices generally rose by 5% over the two months July/August. And it’s not just food. Various other commodity prices, such as copper and oil, have also increased substantially.

At the beginning of September there were three days of food riots in Mozambique in protest against the 30% rise in the price of bread. Seven people were killed and 288 were injured. On 2 September Russia announced that it was extending a ban on wheat exports for another 12 months following a disastrous harvest. In Pakistan, the floods have destroyed a fifth of the country’s crops. Drought in Australia and floods in the Canadian prairies have reduced these countries’ grain production.

In response to the higher prices and fears of food riots spreading, the United Nations has called a special meeting on 24 September to bring food exporters and importers together to consider “appropriate reactions to the current market situation”. And yet, although global cereal production is down by some 5% on last year, it is still predicted to be the third largest harvest on record.

So what is causing the price rises? Is it simply a question of the balance of supply and demand and, if so, what has caused the relevant shifts in supply and/or demand? And what role does speculation play? The following articles look at the issues and at the outlook for commodity prices over the coming months.

Clearly changes in commodity prices affect the rate of inflation. The news item (Bank of England navigates choppy waters) amongst other issues looks at the outlook for inflation and the various factors influencing it.

Articles
Commodity prices soar as spectre of food inflation is back Guardian, Simon Bowers (6/8/10)
Food inflation is a rumble that won’t go away Telegraph, Garry White (8/8/10)
Global wheat supply forecast cut BBC News (12/8/10)
Commodity crisis sparks fear of food inflation on high street Independent, James Thompson and Sean O’Grady (10/8/10)
Should we be concerned about high wheat prices? BBC News, Will Smale (6/8/10)
Commodity prices: Wheat The Economist (12/8/10)
Interactive: What’s driving the wheat price spike? Financial Times, Akanksha Awal, Valentina Romei and Steven Bernard (20/8/10)
Wheat pushes world food prices up BBC News (1/9/10)
UN to hold crisis talks on food prices as riots hit Mozambique Guardian, David Smith (3/9/10)
Grain prices spark global supply fears CBC News, Kevin Sauvé (3/9/10)
GRAINS-US wheat firms after Russian ban extension Forex Yard (3/9/10)
Global food prices reach 20 year high BBC News, John Moylan (3/9/10)
Speculators ‘not to blame for higher food costs’ BBC Today Programme, David Hightower (4/9/10)
Q&A: Rising world food prices BBC News (3/9/10)
Don’t starve thy neighbour The Economist (9/9/10)

Data
Commodity prices Index Mundi
Commodity prices BBC market data
Energy prices U.S. Energy Information Administration

Questions

  1. Use a supply and demand diagram to illustrate (a) what has been happening to wheat prices (b) what is likely to happen to wheat prices over the coming months?
  2. How relevant is the price elasticity of demand and supply and the income elasticity of demand to your analysis?
  3. What factors have caused the shifts in demand and/or supply of wheat and copper?
  4. What has been the role of speculation in the price rises? Is this role likely to change over the coming months?
  5. What is likely to happen to food prices in the shops over the coming months? Would you expect bread prices to rise by the same percentage as wheat? If so, why; if not, why not?
  6. If commodity prices generally rose by 5 per cent over the coming year, would you expect inflation to be 5 per cent? Again, if so, why; if not, why not?

The annual Agricultural Outlook for the next ten years has just been published jointly by the OECD and the UN Food and Agriculture Organization (FAO). Click here and here for audio presentations of the report by the FAO’s Jacques Diouf and the OECD’s Angel Gurría.

The report argues that world recovery will raise agricultural prices. This will be partly the direct result of higher demand and partly the result of higher prices of agricultural inputs, such as fertilisers and fuel. But prices will not rise back to the peak levels of 2007/8. These higher prices, however, would have a positive effect on world food output, especially in the BRICs (Brazil, Russia, India and China). This, in turn, would limit the price rises.

So is this good news for food producers and consumers? The following articles look at the issues

Articles
Economic upturn, energy to lift farm prices-FAO/OECD Reuters, Gus Trompiz (15/6/10)
Higher average farm prices expected, food security concerns persist, say OECD and FAO FAO Media Centre (15/6/10)
Food commodity prices to rise Financial Times, Javier Blas (15/6/10)
Price increases fuel fears of food ‘crises’ Financial Times, Javier Blas (15/6/10)
Emerging economies ‘to enjoy food production boom’ BBC News (15/6/10)
Rising crop prices can be ‘good news’ for farmers: UN/OECD MSN News, Malaysia (15/6/10)
Food prices to rise by up to 40% over next decade, UN report warns Guardian (15/6/10)
Wheat, oils and dairy prices to stay up 40% for next decade, FAO BakeryAndSnacks.com, Jess Halliday (15/6/10)
Food prices could soar up by 40 per cent in next decade, UN report warns UN News Centre (15/6/10)

Report and data
OECD-FAO Agricultural Outlook 2010-2019: portal page OECD and FAO
OECD-FAO Agricultural Outlook 2010-2019: Highlights OECD and FAO
OECD-FAO Agricultural Outlook 2010-2019: Database OECD and FAO
Commodity prices Index Mundi

Questions

  1. Explain what is likely to happen to food prices. What are the explanations given in the report?
  2. Represent the analysis on a supply and demand diagram (or diagrams).
  3. What is the relevance of (a) income elasticity of demand, (b) price elasticity of demand, (c) cross-price elasticity of demand, (d) price elasticity of supply, in explaining the likely future movements of food prices and why some food prices are likely to rise faster than others?
  4. What factors are likely to impact on the production of food in developing countries?

As the global recession began to take hold during 2008, so many commodity prices plummeted. Oil prices fell from over $140 per barrel in mid July 2008 to around $35 per barrel by the end of the year (a mere quarter of the price just 6 months previously). From early 2009, however, prices started rising again and have continued to do so during 2010. By mid April 2010, the price of oil had risen to $85 per barrel.

And it’s not just oil prices that have been rising. The prices of metals such as copper, nickel and zinc have been soaring. Since the beginning of February 2010, copper prices have risen by 18%, zinc prices by 20% and nickel prices by 46%. As the article from the Independent states:

The Office for National Statistics said that the input price index for materials and fuels purchased by the manufacturing industry rose 10.1 per cent in the year to March and rose 3.6 per cent between February and March alone. The ONS added that prices of imported materials as a whole, including imported crude oil, rose 4.4 per cent between February and March.

Much of the explanation for this has been the global recovery. But while raw material prices have been rising, grain prices have been relatively steady and recently have fallen. So how can this be explained? The answer, as always with commodity prices, lies with demand and supply, as you will see when you read the following articles.

Articles
Commodity prices fuel inflation spike Independent, Sean O’Grady (10/4/10)
Interest rates may have to rise sooner after figures point to inflation rise Guardian, Katie Allen (9/4/10)
Pound rises as UK producer prices hint at inflation BBC News (9/4/10)
Petrol price hits record high BBC News (8/4/10)
China commodity imports soar despite high costs Reuters (10/4/10)
March Output Price Inflation Highest Since Nov 08 Marketnews.com (9/4/10)
Spring season: What is pushing up the price of copper and other base metals? The Economist (8/4/10)
Factory gate price rise leads to fear of inflation Financial Advice (9/4/10)
Corn Falls as Warm, Dry Weather Will Aid Planting in the U.S. BusinessWeek, Jeff Wilson (8/4/10)
Wheat Futures Fall as U.S. Exports Slump, Global Crop to Gain BusinessWeek, Tony C. Dreibus (9/4/10)
Commodities: Chinese imports defying commodity−price rally for now FZstreet.com, Danske Research Team (12/4/10)

Data
Commodity prices can be found at the following sites:
Commodity price data BBC News: Markets
Commodity prices Index Mundi
World Crude Oil Prices U.S. Energy Information Administration (See, for example, Brent Crude Oil Prices)
UK factory gate prices can be found at:
Latest Producer Prices Office for National Statistics, and
Producer Prices portal Office for National Statistics

Questions

  1. Use supply and demand analysis to explain why raw material prices have risen so rapidly. Illustrate your answer with a diagram.
  2. Use supply and demand analysis to explain why grain prices have fallen. Again, illustrate your answer with a diagram.
  3. What is the significance of income elasticity of demand and price elasticities of demand and supply in explaining the price changes in questions 1 and 2?
  4. How would you estimate the likely effect of a 1% rise in (a) general raw material prices and (b) factory gate prices on the rate of consumer price inflation?
  5. Why has the price of petrol risen above the level of July 2008, given that oil prices now are only about 60% of those in 2008?
  6. Why has a rise in factory gate prices led to a rise in the sterling exchange rate?
  7. If inflation rises as a result of a rise in commodity prices, what type of inflation would this increase in inflation be? Does the answer depend on what caused the rise in commodity prices?

Up until a year ago, milk and cheese prices were soaring woldwide (see Cheddar – the king of cheeses at £2000 per tonne). A surging world economy and rapidly growing demand from China and India were driving up commodity prices, including milk and milk-based producs. In the UK, average farmgate prices for milk had risen from 19 pence per litre (ppl) in 2006 to 27.4ppl by October 2008 (see here for data). Since then, however, as the global economy has plunged into recession, milk prices have fallen. By September 2009, the farmgate price had fallen by over 18 per cent to around 22.4ppl. With rising costs for fuel and cattle feed, many dairy farmers are now making a loss and are either quitting, or considering quitting, the industry.

It’s a similar story in Europe, North America and other dairy producing regions of the world. In Europe “the mood is turning sour. Last week 300 tractors dragged milk containers over fields in southern Belgium, dumping a day’s worth of production (see video). Similar protests were made in Germany, France, the Netherlands and Luxembourg. The crisis has driven many EU farmers into a ‘milk strike’, with thousands refusing to deliver to the industrial dairy conglomerates that produce everything from skimmed milk to processed cheese.”

So is this just market forces in action and will prices rise again as the world economy recovers? Or is it a reflection, in part, of the monopsony power of the supermarkets and the milk processing industry? The following articles look at the issues, both in the UK and the rest of Europe and in the USA.

Milk ‘strikes’ and shortages hit Europe as UK dairy industry reels from crisis Observer (20/9/09)
German agriculture ministers meet as European milk crisis escalates Deutsche Welle (17/9/09)
EU Milk Strike Joined by More Than 60,000 Farmers, Group Says Bloomberg (18/9/09)
EU to boost aid for dairy farms BBC News (17/9/09)
Milk: Commission proposes further measures to help dairy sector in short, medium and long term European Commission Press Release (17/9/09)
Milk output fell in August as dairies cut herds Chicago Daily Herald (19/9/09)
New England tries to save dairies The News Journal (Delaware) (20/9/09)

Questions

  1. For what reasons are many dairy farmers now making a loss?
  2. For what reasons has the power balance in the wholesale milk market shifted towards milk purchasers (such as supermarkets) and away from farmers?
  3. How would a phased liberalisation of EU milk production help the UK’s dairy farmers?
  4. Discuss the likely effectiveness of the European Commission’ proposed measures to help dairy sector in short, medium and long term.
  5. What is likely to happen to milk prices over the next two years and what will be the likely effect on supply? Explain your answer and consider the relevance of price elasticity of supply.
  6. “Agriculture officials and farmers in Vermont, New Hampshire and Massachusetts have launched a program called Keep Local Farms. … Organizers say they hope to appeal to consumers’ growing taste for local foods” (see final linked article above). What determines the likely effectiveness of such ‘buy local’ movements? What incentives are there for people to buy local? If countries in general encourage people to buy local, is this a zero sum game? Explain.

The US Institute of Medicine of the National Academies has recently published a 92-page on report on childhood obesity and the use of taxes on junk foods to tackle the problem. In the report, titled Local Government Actions to Prevent Childhood Obesity, “a panel of experts suggested such taxes could play an important role in helping children make healthier eating choices”.

Meanwhile, in Australia, the Federal Government’s preventive health taskforce argued, amongst other things, that “junk food advertising should be phased out, the cost of cigarettes should be more than $20 a packet, and soft drinks and cask wine should be hit with higher taxes”.

So how effective are higher taxes in achieving a reduction in ill health associated with eating, drinking and smoking? If adopted, what is the socially optimum design and rates of such taxes? What other complementary policies could be adopted? The following articles consider the issues.

More support for a junk-food tax Los Angeles Times (2/9/09)
Tax junk food, drinks to fight child obesity-report Reuters (31/8/09)
Could Raising Taxes on Junk Food Curb Obesity? eMaxHealth (2/9/09)
Junk food and tobacco under fire The Age (Australia) (2/9/09)
What price health? The Australian (2/9/09)

Questions

  1. For what reasons does the free market fail to achieve an optimum level of consumption of junk foods, alcohol and cigarettes?
  2. How would you determine the socially optimum level of consumption of such products?
  3. How are the price, income and cross-price elasticities of demand, and the price elasticity of supply, relevant to assessing the effectiveness of taxes for reducing the consumption of unhealthy products?
  4. What determines the incidence of taxes on unhealthy products?
  5. What other policies would you advocate to tackle the problems associated with consuming unhealthy products? How would they affect the price elasticity of demand for such products.
  6. To what extent do the objectives of social efficiency and equity conflict when designing appropriate policies to discourage unhealthy consumption?