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  • Too much of a good thing
    Too much of a good thing
    Sutton, Mark A; Oenema, Oene; Erisman, Jan Willem; Leip, Adrian; van Grinsven, Hans; Winiwarter, Wilfried

    Nature, 04/2011, Letnik: 472, Številka: 7342
    Journal Article

    All biological systems need reactive nitrogen, but historically it has been in short supply. ... the end of the nineteenth century, the main agricultural source was fixation of N2 by symbiotic bacteria in legumes planted for that purpose, combined with careful recycling of the limited amount of nitrogen in manure.

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