Groundwater nitrate response to sustainable nitrogen management.

Sci Rep · 2017 · PMC5561247 · PMID 28819258

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a clear trendno p-value reported

Our analyses evidence a clear trend of a reversal at the beginning of the 1980s towards a more sustainable agricultural N management.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.