Dynamics of Water in Zea Mays L.: Sensitivity Analysis of TROIKA
ABSTRACT WATER movement from the soil into roots, through the plant, and out into the atmosphere in response to the microclimate was simulated for field-grown maize (sweet corn) plants. Predicted leaf water potentials were compared with field-measured values. A sensitivity analysis of the simulation model was performed to indicate the required measurement accuracy for certain parameters. Variations in internal plant (stem) resistance and leaf area significantly affected leaf water potential predictions. Root length and root permeability had less dramatic effects. The model is relatively insensitive to changes in root radius and leaf width.