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The N-P-K soil nutrient balance of Portuguese cropland in the 1950s: The transition from organic to chemical fertilization

Published Online: 2017-08-14

Authors

Carmo, Miguel

García-Ruiz, Roberto

Ferreira, Maria Isabel

Domingos, Tiago
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Text and Data Mining valid from 2017-08-14

Version of Record valid from 2017-08-14
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Article History

Received: 22 May 2017

Accepted: 7 July 2017

First Online: 14 August 2017

Competing Interests

: The authors declare that they have no competing interests.

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