Maize water use efficiency under supplementary irrigation


The project is conducted in Chikwawa district in Malawi. This is a drought prone area. Different released maize varieties have been planted. One set is growing under normal rains while another set is being supplemented with irrigation.


The One v3.0 (Phi2, NPQt, using Multi-Phase Flash)

The One Protocol to rule them all! Phi2, NPQt combined.

Changes from previous The One protocol: - Removed the Phi1 measurement, which was producing a lot of invalid data (removed by Dan and Frank) - Implemented the multi-phase flash protocol created by Tom Avenson

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. Rep (Multiple Choice)
  2. Water regime (Multiple Choice)
  3. Leaf position (Multiple Choice)
  4. WAP (Short Answer)
  5. Variety (Multiple Choice)



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