ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈoːɹɾi θɹˈiː, dʒˈɑːn bˈɛnɪt lˈɔːz ænd dʒˈoʊsəf hˈɛnɹi ɡˈɪlbɚt bɪɡˈæn ɐ sˈɛt ʌv lˈɔŋtˈɜːm fˈiːld ɛkspˈɛɹɪmənts æt ɹˈɑːθæmstᵻd ɹᵻsˈɜːtʃ ɪn ˈɪŋɡlənd, sˌʌm ʌvwˈɪtʃ ɑːɹ stˈɪl ɹˈʌnɪŋ æz ʌv tˈuː θˈaʊzənd ˈeɪtiːn.
In 1843, John Bennet Lawes and Joseph Henry Gilbert began a set of long-term field experiments at Rothamsted Research in England, some of which are still running as of 2018.