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      Calculation of threshold Olsen P values for fertilizer response from soil properties 

      Delgado García, Antonio; Torrent Castellet, José; Diaz de la Torre, Isabel; Recena Garrido, Ramiro; Campillo García, Carmen del (Diario Oficial del Institut National de la Recherche Agronomique (INRA), 2016)
      Phosphorus (P), a non-renewable resource, needs to be used more efficiently in agriculture. This requires using soil P ...