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A simple model to predict N mineralisation of greenhouse soils

Joost Salomez UGent, Karoline D'Haene, Georges Hofman UGent and I Vandevelde (2002) Acta Horticulturae. 571. p.143-148
abstract
The formulation of a correct N fertilisation advice, besides a measurement of N-min at the start of the growing period, mainly depends on the possibility to predict the N mineralisation out of soil organic matter. This study aimed to model the N mineralisation of greenhouse soils, using both easily available and easily measurable parameters. Two laboratory incubation experiments were set up. The first incubation experiment allowed to deduct a zero-order model, N-t = kt, in which N-t = N mineralised [kg N ha(-1)], k = N mineralisation rate constant [kg N ha(-1) day(-1)] and t = time [days], whereas the temperature dependence of the N mineralisation rate constant was deduced out of the second incubation experiment. The N mineralisation rate constant further depends on the N mineralisation potential of the soil and on the 'soil's age', i.e. being the time the soil has been glass-covered, eventually leading to the following simple N mineralisation model: N-t = (-9.965 + 0.104 N-KCl + 0.336 T + 0.095 O)t, with N-KCl = N-min in a hot KCl-extract (100degreesC) [kg N ha(-1)], T = temperature [degreesC] and O = soil's age [years]. Though the via the model calculated (k(mod)) and experimentally obtained (k(exp)) N mineralisation rate constants were closely related and a linear relationship was found k(mod) = 0.872 k(exp) (R-2 = 0.719, alpha<0.01), further research is necessary to evaluate this model in-situ. In the long run it will be incorporated into a nitrogen fertilisation advice system for greenhouse crops.
Please use this url to cite or link to this publication:
author
organization
year
type
conference (proceedingsPaper)
publication status
published
subject
keyword
SULFUR MINERALIZATION, NET NITROGEN, NITROGEN MINERALIZATION, rate constant, N mineralisation kinetics, soil organic matter, incubation experiments, TEMPERATURE, MOISTURE, CARBON
in
Acta Horticulturae
Acta Hortic.
editor
R Booij and J Neeteson
volume
571
issue title
Workshop Towards an ecologically sound fertilisation in field vegetable production
pages
143 - 148
publisher
International Society for Horticultural Science (ISHS)
place of publication
Leuven, Belgium
conference name
Workshop on Towards an Ecologically Sound Fertilisation in Field Vegetable Production
conference location
Wageningen, The Netherlands
conference start
2000-09-11
conference end
2000-09-14
Web of Science type
Proceedings Paper
Web of Science id
000175931900016
ISSN
0567-7572
ISBN
9789066058156
language
English
UGent publication?
yes
classification
P1
id
152419
handle
http://hdl.handle.net/1854/LU-152419
alternative location
http://www.actahort.org/books/571/571_16.htm
date created
2004-01-14 13:38:00
date last changed
2017-05-02 12:17:46
@inproceedings{152419,
  abstract     = {The formulation of a correct N fertilisation advice, besides a measurement of N-min at the start of the growing period, mainly depends on the possibility to predict the N mineralisation out of soil organic matter. This study aimed to model the N mineralisation of greenhouse soils, using both easily available and easily measurable parameters. 
Two laboratory incubation experiments were set up. The first incubation experiment allowed to deduct a zero-order model, N-t = kt, in which N-t = N mineralised [kg N ha(-1)], k = N mineralisation rate constant [kg N ha(-1) day(-1)] and t = time [days], whereas the temperature dependence of the N mineralisation rate constant was deduced out of the second incubation experiment. The N mineralisation rate constant further depends on the N mineralisation potential of the soil and on the 'soil's age', i.e. being the time the soil has been glass-covered, eventually leading to the following simple N mineralisation model: N-t = (-9.965 + 0.104 N-KCl + 0.336 T + 0.095 O)t, with N-KCl = N-min in a hot KCl-extract (100degreesC) [kg N ha(-1)], T = temperature [degreesC] and O = soil's age [years]. 
Though the via the model calculated (k(mod)) and experimentally obtained (k(exp)) N mineralisation rate constants were closely related and a linear relationship was found k(mod) = 0.872 k(exp) (R-2 = 0.719, alpha{\textlangle}0.01), further research is necessary to evaluate this model in-situ. In the long run it will be incorporated into a nitrogen fertilisation advice system for greenhouse crops.},
  author       = {Salomez, Joost and D'Haene, Karoline and Hofman, Georges and Vandevelde, I},
  booktitle    = {Acta Horticulturae},
  editor       = {Booij, R and Neeteson, J},
  isbn         = {9789066058156},
  issn         = {0567-7572},
  keyword      = {SULFUR MINERALIZATION,NET NITROGEN,NITROGEN MINERALIZATION,rate constant,N mineralisation kinetics,soil organic matter,incubation experiments,TEMPERATURE,MOISTURE,CARBON},
  language     = {eng},
  location     = {Wageningen, The Netherlands},
  pages        = {143--148},
  publisher    = {International Society for Horticultural Science (ISHS)},
  title        = {A simple model to predict N mineralisation of greenhouse soils},
  url          = {http://www.actahort.org/books/571/571\_16.htm},
  volume       = {571},
  year         = {2002},
}

Chicago
Salomez, Joost, Karoline D’Haene, Georges Hofman, and I Vandevelde. 2002. “A Simple Model to Predict N Mineralisation of Greenhouse Soils.” In Acta Horticulturae, ed. R Booij and J Neeteson, 571:143–148. Leuven, Belgium: International Society for Horticultural Science (ISHS).
APA
Salomez, J., D’Haene, K., Hofman, G., & Vandevelde, I. (2002). A simple model to predict N mineralisation of greenhouse soils. In R. Booij & J. Neeteson (Eds.), Acta Horticulturae (Vol. 571, pp. 143–148). Presented at the Workshop on Towards an Ecologically Sound Fertilisation in Field Vegetable Production, Leuven, Belgium: International Society for Horticultural Science (ISHS).
Vancouver
1.
Salomez J, D’Haene K, Hofman G, Vandevelde I. A simple model to predict N mineralisation of greenhouse soils. In: Booij R, Neeteson J, editors. Acta Horticulturae. Leuven, Belgium: International Society for Horticultural Science (ISHS); 2002. p. 143–8.
MLA
Salomez, Joost, Karoline D’Haene, Georges Hofman, et al. “A Simple Model to Predict N Mineralisation of Greenhouse Soils.” Acta Horticulturae. Ed. R Booij & J Neeteson. Vol. 571. Leuven, Belgium: International Society for Horticultural Science (ISHS), 2002. 143–148. Print.