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The sector of an economy making direct use of natural resources. This includes agriculture, forestry and fishing, mining, and extraction of oil and gas. This is contrasted with the secondary sector, producing manufactures and other processed goods, and the tertiary sector, producing services. The primary sector is usually most important in less developed countries, and typically less important in industrial countries. The manufacturing industries that aggregate, pack, package, purify or process the raw materials close to the primary producers are normally considered part of this sector, especially if the raw material is unsuitable for sale or difficult to transport long distances.1

Primary industry is a larger sector in developing countries; for instance, animal husbandry is more common in Africa than in Japan.2 Mining in 19th century South Wales is a case study of how an economy can come to rely on one form of business.3 Canada is unusual among developed countries in the importance of the primary sector, with the logging and oil industries being two of Canada's most important. Contents 1 Agriculture 2 List of countries by agricultural output 3 See also 4 References 5 Further reading Agriculture Economic sectors Three-sector hypothesis Primary sector: raw materials Secondary sector: manufacturing Tertiary sector: services Theorists Colin Clark · Jean Fourastié Additional sectors Quaternary sector · Quinary sector Sectors by ownership Business sector · Private sector · Public sector · Voluntary sector v · d · e

In developed countries primary industry becomes more technologically advanced, for instance the mechanization of farming as opposed to hand picking and planting. In more developed economies additional capital is invested in primary means of production. As an example, in the United States corn belt, combine harvesters pick the corn, and spray systems distribute large amounts of insecticides, herbicides and fungicides, producing a higher yield than is possible using less capital-intensive techniques. These technological advances and investment allow the primary sector to require less workforce and, this way, developed countries tend to have a smaller percentage of their workforce involved in primary activities, instead having a higher percentage involved in the secondary and tertiary sectors.4

Developed countries are allowed to maintain and develop their primary industries even further due to the excess wealth. For instance, EU subsidies in Europe provide buffers for the fluctuating inflation rates and prices of agricultural produce. This allows developed countries to be able to export their agricultural products at extraordinarily low prices, making them extremely competitive against those of poor or underdeveloped countries that maintain free market policies and low or inexistent tariffs to counter them.567 List of countries by agricultural output Main article: List of countries by GDP sector composition Below is a list of countries by agricultural output in 2010. Output is in millions of US$. Rank Country Output —   World 3,585,829 1  China 599,582 —  European Union 293,080 2  India 284,524 3  United States 161,236 4  Brazil 142,141 5  Indonesia 108,130 6  Japan 76,424 7  Turkey 71,218 8  Russia 58,603 9  France 51,651 10  Australia 48,186 See also Economics portal Three-sector hypothesis Resource curse References ^ About.com: Sectors of the Economy ^ Primary Sector in Economic Development ^ Mining: it's only a word ^ H Dwight H. Perkins: Proceedings of the Academy of Political Science, Vol. 31, No. 1, China's Developmental Experience (Mar., 1973) ^ WTO MINISTERIAL OUTCOME IMBALANCED AGAINST DEVELOPING COUNTRIES ^ Third World Farmers Hit by Unfair Rules ^ U.S. subsidies help big business, but crush farmers from renovating countries Further reading Dwight H. Perkins: Proceedings of the Academy of Political Science, Vol. 31, No. 1, China's Developmental Experience (Mar., 1973) Cameron: General Economic and Social History Historia Económica y Social General, by Maria Inés Barbero, Rubén L. Berenblum, Fernando R. García Molina, Jorge Saborido The Nature of Wealth, by Fred Lundgren and Jerome Friemel