How to develop a wilting index in R?

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Guido Bongi

Sap extraction pressure versus water volume loss relationship is the driver of wilting; this is usually reported as PV curve. The respèonse variable is transmission or reflection changes due to less effective leaf area. Some of your variables change PV and I suggest to have a PV model for them before any R coding.

Sridevi Ravi

Thanks for the suggestion Guido. I was talking of something more like this? (file attached). This is a visual assessment of wilting and monitoring of mortality, in addition to the PV curves.

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