The expert model for the prediction of N- mineralization dynamics (CROSBI ID 536930)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Đurđević, Boris ; Karalić, Krunoslav ; Vukadinović, Vladimir ; Lončarić, Zdenko
engleski
The expert model for the prediction of N- mineralization dynamics
In the development of appropriate N fertilization strategies it is important to predict accurately net N-mineralization dynamics. The expert model for the estimation of intensity of N-mineralization is a modification of the PAPRAN model (Seligman and van Keulen, 1981). The model is adapted to Microsoft Excel program so it could be used more inclusively for the estimation of the mineralization intensity. The model considers the pool of the fresh organic N (crop residues and biomasses) and stabile organic N pool (humus). Mineralization of organic matter in the soil is determined in kg· ; ; ; ; ha-1· ; ; ; ; day-1 through the vegetation of particular crop in different soil horizons. Decomposition is based on the fresh organic matter, humus content and organic fertilizer (the function of C:N:P ratio, that is C:N and C:P, type and quantity of crop residues, pH, temperature and water in the soil). The expert model turned out very useful in calculating fertilization requirement, especially nitrogenous. Mean annual N-mineralization rate was (for three years and 5805 soil samples): 60, 95 kg N ha-1 year-1. Crop residue input, soil organic matter content and soil pH significantly influenced the N-mineralization rate.
model ; prediction ; N mineralization
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
173-178.
2007.
objavljeno
Podaci o matičnoj publikaciji
S. de Neve et al.
Gent: CIEC, Universitet Gent
978-90-5989-182-1
Podaci o skupu
16th International Symposium of the International Scientific Centre of Fertilizers (CIEC): Mineral versus organic fertilization - Conflict or Synergism?
poster
16.09.2007-19.09.2007
Gent, Belgija