Details
| Original language | English |
|---|---|
| Pages (from-to) | 963-973 |
| Number of pages | 11 |
| Journal | Annals of botany |
| Volume | 86 |
| Issue number | 5 |
| Publication status | Published - 7 Sept 2000 |
Abstract
A model of nitrogen uptake and distribution is presented which describes these processes in relation to the amount of available soil nitrate and the rate of plant growth. Nitrogen uptake is either sink or source limited. Sink limitation is based on maximum N-concentrations of plant compartments. The N-uptake model is combined with a photosynthesis model based on the productivity-nitrogen relationship at the single-leaf level. The model is parameterized using cauliflower as an example crop. Applied to an independent data set, the combined model was able to predict leaf, stem and inflorescence nitrogen concentrations with correlation coefficients between predicted and simulated values of 0.89, 0.66 and 0.86, respectively. The influence of nitrogen supply and light intensity on leaf nitrate-N could also be predicted with good accuracy (r2= 0.87). Dry matter production based on the productivity-N relationship and the partitioning into leaf, stem and inflorescence was also reproduced satisfactorily (r2 = 0.91, 0.93 and 0.92, respectively). (C) 2000 Annals of Botany Company.
Keywords
- Brassica oleracea L. botrytis, Cauliflower, Model, Nitrate, Nitrogen, Nitrogen distribution, Nitrogen supply, Nitrogen uptake
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Plant Science
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In: Annals of botany, Vol. 86, No. 5, 07.09.2000, p. 963-973.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modelling nitrogen content and distribution in cauliflower (Brassica oleracea L. botrytis)
AU - Alt, C.
AU - Kage, H.
AU - Stützel, H.
PY - 2000/9/7
Y1 - 2000/9/7
N2 - A model of nitrogen uptake and distribution is presented which describes these processes in relation to the amount of available soil nitrate and the rate of plant growth. Nitrogen uptake is either sink or source limited. Sink limitation is based on maximum N-concentrations of plant compartments. The N-uptake model is combined with a photosynthesis model based on the productivity-nitrogen relationship at the single-leaf level. The model is parameterized using cauliflower as an example crop. Applied to an independent data set, the combined model was able to predict leaf, stem and inflorescence nitrogen concentrations with correlation coefficients between predicted and simulated values of 0.89, 0.66 and 0.86, respectively. The influence of nitrogen supply and light intensity on leaf nitrate-N could also be predicted with good accuracy (r2= 0.87). Dry matter production based on the productivity-N relationship and the partitioning into leaf, stem and inflorescence was also reproduced satisfactorily (r2 = 0.91, 0.93 and 0.92, respectively). (C) 2000 Annals of Botany Company.
AB - A model of nitrogen uptake and distribution is presented which describes these processes in relation to the amount of available soil nitrate and the rate of plant growth. Nitrogen uptake is either sink or source limited. Sink limitation is based on maximum N-concentrations of plant compartments. The N-uptake model is combined with a photosynthesis model based on the productivity-nitrogen relationship at the single-leaf level. The model is parameterized using cauliflower as an example crop. Applied to an independent data set, the combined model was able to predict leaf, stem and inflorescence nitrogen concentrations with correlation coefficients between predicted and simulated values of 0.89, 0.66 and 0.86, respectively. The influence of nitrogen supply and light intensity on leaf nitrate-N could also be predicted with good accuracy (r2= 0.87). Dry matter production based on the productivity-N relationship and the partitioning into leaf, stem and inflorescence was also reproduced satisfactorily (r2 = 0.91, 0.93 and 0.92, respectively). (C) 2000 Annals of Botany Company.
KW - Brassica oleracea L. botrytis
KW - Cauliflower
KW - Model
KW - Nitrate
KW - Nitrogen
KW - Nitrogen distribution
KW - Nitrogen supply
KW - Nitrogen uptake
UR - http://www.scopus.com/inward/record.url?scp=0033759264&partnerID=8YFLogxK
U2 - 10.1006/anbo.2000.1252
DO - 10.1006/anbo.2000.1252
M3 - Article
AN - SCOPUS:0033759264
VL - 86
SP - 963
EP - 973
JO - Annals of botany
JF - Annals of botany
SN - 0305-7364
IS - 5
ER -