Compare photosynthetic rates of nodulated v. N-fertilized legumes. Using Soybean, Medicago truncatula, Medicago polymorpha, and Trifolium fucatum.
- Chlorophyll Fluorescence Phi2
Using an orange measuring light (pin 15) and red saturating and actinic light (pin 20), this performs the standard PAM fluorescence measurement but includes a background constant actinic light which is equivalent to the ambient PAR value.
- Chlorophyll content (SPAD) I
REQUIREMENTS: Firmware v0.38 or lower (used for older devices which do not have a SPAD calibration, generally device ID 87 and lower).Measures transmission at 940nm and 650nm in order to determine the 'greenness' of a leaf, an indicator of chlorophyll content and nitrogen content. The 940 is used to account for leaf thickness.
- Plant Species (Multiple Choice)
- Leaf age (Multiple Choice)
- Nitrogen source (Multiple Choice)