We are investigating the effects of seaweed extracts in different development stages of tomato plants. We will measure several photosynthetic parameters such as chlorophyll fluroescence Phi2 or chlorophyll content SPAD.
- The One Protocol (Phi2, PSI, NPQ) II
The One Protocol to rule them all! Phi2, PSI, NPQt, combined!
Changes from previous The One protocol: - no longer outputs signal from the far red period, which simplifies the signal output for the user - changed distance between measuring pulses from 10,000 to 2,000 which improves measurement resolution - has an initial stabilization peri...
- 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.