A simple model for phosphorus uptake kinetics of wheat seedlings
作者:
D. T. Gardiner,
N. W. Christensen,
期刊:
Journal of Plant Nutrition
(Taylor Available online 1997)
卷期:
Volume 20,
issue 2-3
页码: 271-277
ISSN:0190-4167
年代: 1997
DOI:10.1080/01904169709365249
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A simple model to compare and predict phosphorus (P) uptake behavior of plants may be useful to agronomists. A predictive equation based on Michaelis‐Menten kinetics was developed for this purpose. Kinetic parameters for use in the model were determined in an experiment using two cultivars of winter wheat grown for 21 days in 14 soil treatments, including seven P levels, each in fumigated and unfumigated soil. In another experiment, the same wheat cultivars were grown for 7, 14, or 21 days at one soil P level in both fumigated and unfiimigated soil. Using parameter values developed in the first experiment with multiple P levels and one time period, the model closely (R2=0.966, P<0.001) predicted P uptake in the second experiment with one P level over multiple time periods. The model could be a useful agronomic tool because of its simplicity and because no data need be collected from artificial growing conditions.
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