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Parameter Estimation for Crop Models

A New Approach and Application to a Corn Model

^a Unité d'Agronomie, INRA, BP 27, 31326 Castanet Tolosan Cedex, France
^b Unité de Biométrie et d'Intelligence Artificielle, INRA, BP 27, 31326 Castanet Tolosan Cedex, France
^c Laboratoire d'Agronomie, INRA INA P-G, 78850 Thiverval-Grignon, France

View larger version (25K): [in a new window]   Fig. 1. Calculated vs. observed yields, for (A) initial parameter values and for (B) the best model as given in Table 4. The 1:1 line is shown. For the model with no adjusted parameter values, Cy = MSEPy by definition.

View larger version (25K): [in a new window]   Fig. 2. Calculated vs. observed yield losses, for (A) initial parameter values and for (B) the best model as given in Table 4. The 1:1 line is shown. For the model with no adjusted parameter values, Cyloss = MSEPyloss by definition.