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In 2009, the [[Agriculture in China|agricultural output of China]] was the largest in the world, followed by the European Union, India and the United States, according to the [[International Monetary Fund]] (''[[Agriculture#List of countries by agricultural output|see below]]''). Economists measure the [[total factor productivity]] of agriculture and by this measure agriculture in the United States is roughly 1.7 times more productive than it was in 1948.<ref>{{cite web|publisher=USDA Economic Research Service|url=http://www.ers.usda.gov/data/agproductivity/ |title=Agricultural Productivity in the United States|date=5 July 2012|accessdate=22 April 2013}}</ref>
== Radna snaga ==
Godine 2011. [[International Labour Organization]] states that approximately one billion people, or over 1/3 of the available work force, are employed in the global agricultural sector. Agriculture constitutes approximately 70% of the global employment of children, and in many countries employs the largest percentage of women of any industry.<ref name=ILO/> The [[service sector]] only overtook the agricultural sector as the largest global employer in 2007. Between 1997 and 2007, the percentage of people employed in agriculture fell by over four percentage points, a trend that is expected to continue.<ref>{{cite web|url=http://www.financialexpress.com/news/story/191279|title=Services sector overtakes farming as world's biggest employer: ILO|author=AP|date=26 January 2007|accessdate=24 April 2013|publisher=''The Financial Express''}}</ref> The number of people employed in agriculture varies widely on a per-country basis, ranging from less than 2% in countries like the US and Canada to over 80% in many African nations.<ref name=LaborForce>{{cite web|url=https://www.cia.gov/library/publications/the-world-factbook/fields/2048.html|title=Labor Force – By Occupation|publisher=Central Intelligence Agency|work=The World Factbook|accessdate=4 May 2013}}</ref> In developed countries, these figures are significantly lower than in previous centuries. During the 16th century in Europe, for example, between 55 and 75 percent of the population was engaged in agriculture, depending on the country. By the 19th century in Europe, this had dropped to between 35 and 65 percent.<ref>{{cite journal|url=http://economics.ouls.ox.ac.uk/13621/1/uuid9ef3c3c6-512f-44b6-b74e-53266cc42ae2-ATTACHMENT01.pdf|format=PDF|title=Economic structure and agricultural productivity in Europe, 1300–1800|journal=European Review of Economic History|volume=3|pages=1–25|author=Allen, Robert C.}}</ref> In the same countries today, the figure is less than 10%.<ref name=LaborForce/>
=== Bezbednost ===
[[File:Ford Tractor with ROPS bar fitted.JPG|right|thumb|[[Rollover protection system|Rollover protection bar]] on a [[Fordson tractor]]]]
Agriculture remains a hazardous industry, and farmers worldwide remain at high risk of work-related injuries, lung disease, [[noise-induced hearing loss]], skin diseases, as well as certain cancers related to chemical use and prolonged sun exposure. On [[industrial agriculture|industrialized farms]], injuries frequently involve the use of [[agricultural machinery]], and a common cause of fatal agricultural injuries in developed countries is tractor rollovers.<ref name="aginjury">{{cite web|url=http://www.cdc.gov/niosh/topics/aginjury/ |title=NIOSH Workplace Safety & Health Topic: Agricultural Injuries|publisher=Centers for Disease Control and Prevention|accessdate=16 April 2013}}</ref> Pesticides and other chemicals used in farming can also be hazardous to worker health, and workers exposed to pesticides may experience illness or have children with birth defects.<ref name=NIOSH_pest>{{cite web|url=http://www.cdc.gov/niosh/docs/2012-108/ |title=NIOSH Pesticide Poisoning Monitoring Program Protects Farmworkers|publisher=Centers for Disease Control and Prevention|accessdate=15 April 2013}}</ref> As an industry in which families commonly share in work and live on the farm itself, entire families can be at risk for injuries, illness, and death.<ref name="NIOSH Agri">{{cite web|url=http://www.cdc.gov/niosh/topics/agriculture/ |title=NIOSH Workplace Safety & Health Topic: Agriculture|publisher=Centers for Disease Control and Prevention|accessdate=16 April 2013}}</ref> Common causes of fatal injuries among young farm workers include drowning, machinery and motor vehicle-related accidents.<ref name="NIOSH Agri" />
The International Labour Organization considers agriculture "one of the most hazardous of all economic sectors."<ref name=ILO>{{cite web|url=http://www.ilo.org/safework/info/standards-and-instruments/codes/WCMS_161135/lang--en/index.htm|title=Safety and health in agriculture|publisher=International Labour Organization|accessdate=24 April 2013|date=21 March 2011}}</ref> It estimates that the annual work-related death toll among agricultural employees is at least 170,000, twice the average rate of other jobs. In addition, incidences of death, injury and illness related to agricultural activities often go unreported.<ref name=ILO2>{{cite web|url=http://www.ilo.org/safework/areasofwork/hazardous-work/WCMS_110188/lang--en/index.htm|title=Agriculture: A hazardous work|publisher=International Labour Organization|accessdate=24 April 2013|date=15 June 2009}}</ref> The organization has developed the [[Safety and Health in Agriculture Convention, 2001]], which covers the range of risks in the agriculture occupation, the prevention of these risks and the role that individuals and organizations engaged in agriculture should play.<ref name=ILO/>
== Poljoprivredni proizvodni sistemi ==