[[File:ShireDraftHorse.jpg|thumb|maldekstre|[[Selekta bredado]] de [[Shire ĉevalo|Shire]] por ties grando okazis el la 18a jarcento.]]
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TheLa mechanisationmekanizado andkaj rationalisationraciigo ofde agricultureagrikulturo wasestis anotheralia importantgrava factorfaktoro. [[Robert Bakewell (farmer)|Robert Bakewell]] andkaj [[Thomas Coke,]] 1stenkondukis Earlla ofuzadon Leicesterde (seventhla creation)|Thomas[[selekta Cokebredado]], introducedkaj [[selectiveiniciatis procezon breeding]],de endogamia andbredado initiatedpor amaksimumi processla ofkonservadon inbreedingde todezireblaj maximisetrajtoj desirableel traitsla frommezo thede midla 18th18a centuryjarcento, suchkiel asĉe thela ŝafoj [[New Leicester]] sheep. MachinesMaŝinoj wereestis inventedinventitaj topor improveplibonigi thela efficiencyefikecon ofde variousvariaj agriculturalagrikulturaj operationoperacioj, suchkiaj asla [[semomaŝino]] de [[Jethro Tull (agriculturistagrikulturisto)|Jethro Tull]]'s[[seedde drill]]1701 ofkiu 1701mekanizigis thatla mechanisedsemadon seedingje atĝusta theprofundeco correctkaj depthspaco andkaj spacing andla [[Andrew Meikledraŝmaŝino]]'s de [[threshingAndrew machineMeikle]] ofde 1784. PloughsPlugiloj wereestis steadilytuj improvedplibonigitaj, fromel JosephRotherham-aj Foljambe'sferaj [[Plough#Heavyplugiloj Ploughs|Rotherhamde ironJoseph plough]]Foljambe inen 1730<ref>[http://www.rotherhamweb.co.uk/h/plough.htm The Rotherham Plough]</ref> toal plibonigitaj metalaj plugiloj "Scots Plough" de [[James Small (inventorinventisto)|James Small]]'simproved "Scots Plough" metal inde 1763. InEn 1789 [[Ransomes, Sims & Jefferies]] wasestis producingproduktantaj 86 ploughplugilajn modelsmodelojn forpor differentdiferencaj soilsgrundoj.<ref>Barlow, Robert Stockes; "300 Years of Farm Implements and Machinery 1630–1930"; Krause Publications (2003); p.33; ISBN 978-0873496322</ref> Powered farm machinery began with [[Richard Trevithick]]'s [[stationary steam engine]], used to drive a threshing machine, in 1812.<ref name=Hodge>{{cite book | last=Hodge | first=James | title=Richard Trevithick | publisher=Shire Publications | year=1973 | isbn=0-85263-177-4 | page=30}}</ref> Mechanisation spread to other farm uses through the 19th century. The first petrol-driven [[tractor]] was built in America by [[John Froelich]] in 1892.<ref>{{cite book |author1=Macmillan, Don |author2=Broehl, Wayne G. |title=The John Deere Tractor Legacy |publisher=Voyageur Press |url=https://books.google.com/books?id=3cJeffKoriEC&pg=PA45 |page=45}}</ref>
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The scientific investigation of fertilization began at the [[Rothamsted Experimental Station]] in 1843 by [[John Bennet Lawes]]. He investigated the impact of inorganic and organic fertilizers on crop yield and founded one of the first artificial fertilizer manufacturing factories in 1842. Fertilizer, in the shape of [[sodium nitrate]] deposits in [[Chile]], was imported to Britain by [[John Thomas North]] as well as [[guano]] (birds droppings). The first commercial process for fertilizer production was the obtaining of ''[[super phosphate|phosphate]]'' from the dissolution of [[coprolite]]s in [[sulphuric acid]].<ref name="pdmhs.com">Coprolite Fertilizer Industry in Britain [http://www.pdmhs.com/PDFs/ScannedBulletinArticles/Bulletin%2014-5%20-%20The%20Origins%20and%20Development%20of%20the%20British%20.pdf] Accessed 3 April 2012</ref>
