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Fig. 3 | Plant Methods

Fig. 3

From: Using near-infrared spectroscopy to predict nitrogen and phosphorus concentrations of herbarium specimens under different storage conditions

Fig. 3

Model-predicted leaf nutrient contents versus lab-measured leaf nutrient contents for nitrogen and phosphorus as well as fresh and dried leaves based on the fertilization experiment data. Each plot represents one calibration model, each point represents one sample. R squared and root mean square error of prediction (RMSEP) are shown as measures of model quality. The black line is a simple linear model to visualize the deviation of the calibration from the idealized perfect fit represented by the grey line

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Plant Methods

ISSN: 1746-4811