Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 438726
Title Mineral Concentrates Pilot : synthesis of the results of 2011
Author(s) Velthof, G.L.
Source Wageningen : Alterra, Wageningen-UR (Alterra-rapport 2363) - 50
Department(s) Alterra - Sustainable soil management
Publication type Research report
Publication year 2013
Keyword(s) kunstmeststoffen - mestverwerking - stikstof - concentraten - stikstofmeststoffen - drijfmest - fertilizers - manure treatment - nitrogen - concentrates - nitrogen fertilizers - slurries
Categories Fertilizers, Fertilizer Application
Abstract The agronomic and environmental impacts of the production of mineral concentrate and its use as mineral nitrogen (N) fertilizer are examined in a pilot. In this pilot, the mineral concentrate is applied as fertilizer above the application standard for manure, but within the total N application standard (i.e. sum of effective N from manure and mineral fertilizer N) of the Nitrates Directive. The research in 2011 included monitoring of the manure treatment installations, incubation studies to assess immobilization and denitrification of soil-applied mineral concentrate, pot experiments to determine N efficiency of mineral concentrate under controlled conditions, and field experiments to determine N efficiency of mineral concentrate when used for grassland and arable crops. This report summarizes the main results of these studies. The research data will serve for consultation with the European Commission on a possible permanent permission to use mineral concentrate as mineral N fertilizer.
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