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The development from kinetic coefficients of a predictive model for the growth of eichhornia crassipes in the field iii. testing a model for predicting growth rates from plant nutrient concentrations


The development from kinetic coefficients of a predictive model for the growth of eichhornia crassipes in the field iii. testing a model for predicting growth rates from plant nutrient concentrations



Bothalia 15(3-4): 725-732



ISSN/ISBN: 0006-8241

Kinetic coefficients derived for Eichhornia crassipes (Mart.) Solms under culture conditions of N and P limitation and in the field were used in the Droop model to identify the limiting nutrient and to predict specific growth rates under conditions of varying plant nutrient concentration, air temperature, diffuse radiant flux and relative humidity. Predicted data were validated by comparison with specific growth rates measured for plants growing in loosely crowded populations at one field site and compared with specific growth rates predicted from limiting nutrient concentrations in the water at the same site using the Monod model. The results show that specific growth rates were adequately predicted from the Droop model, but generally not as accurately predicted from this model as from the Monod model.

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Accession: 006626502

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