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 434058
Title Evaluation of the NDICEA model
Author(s) Rietberg, P.I.; Burgt, G.J.H.M. van der
Source Driebergen : Louis Bolk Institute (Publication 2012-026 LbP) - 39 p.
Publication type Research report
Publication year 2012
Keyword(s) bemesting - modellen - beslissingsmodellen - stikstof - stikstofmeststoffen - stikstofkringloop - voedingsstoffenbeschikbaarheid - fertilizer application - models - decision models - nitrogen - nitrogen fertilizers - nitrogen cycle - nutrient availability
Categories Fertilizers, Fertilizer Application
Abstract Within the N-Toolbox project the NDICEA nitrogen model, one of the key tools in the virtual Toolbox, has been improved and tested in England, Denmark and Spain. The model performance was evaluated on datasets from these three countries by means of visual observation, RMSE and RSR from the soil nitrogen dynamics. In England the scenarios with organic fertilizer performed better than those with artificial fertilizer, leading to the suggestion that the calculated nitrogen release out of fertilizer could be improved. Timing of the soil sampling on soil inorganic nitrogen is important to realize a good model evaluation; two samples only, before sowing and after harvest, is not enough. When soil mineral nitrogen samples were taken during crop growth, model calculation and measured values showed sometimes big differences. It is suggested to improve the plant nitrogen uptake sub-model.
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