According to my observations plants do photosythesize strongly even with very low available N. This usually comes along with foliage that is of light green colour and little to no plant growth.
I wonder why many growth studies are based solely upon 02 production.
Likewise DO data seems highly suspicious to me if N or any other nutrient was in short supply when measurements were taken since each plant not only has its particular CP for light and nutrients but also for the non limiting point.
If research doesn't test under non limiting conditions DO data seems of no value. Dry weight measurements are the way to go!
Best regards,
Detlef
I wonder why many growth studies are based solely upon 02 production.
Likewise DO data seems highly suspicious to me if N or any other nutrient was in short supply when measurements were taken since each plant not only has its particular CP for light and nutrients but also for the non limiting point.
If research doesn't test under non limiting conditions DO data seems of no value. Dry weight measurements are the way to go!
Best regards,
Detlef