Soybean SDS study


We are trying to predict the incidence and severity of soybean sudden death syndrome in a field naturally infested with the pathogen Fusarium virguliforme.


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) III

REQUIREMENTS: Firmware v0.41 or higher. 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. Improvements over Chlorophyll content (SPAD): - performs 3 different spads at 3 intensities for thin and thick ...


  1. Pass (Multiple Choice)
  2. Soybean Growth Stage (Multiple Choice)
  3. Plant (distance away) (Multiple Choice)
  4. Trifoliate Leaf Position (Multiple Choice with images)
  5. Row (Range) (Multiple Choice)
  6. Trifoliate Number (Multiple Choice)



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