What question did this study set out to answer?

The aim is to assess the feasibility of digital cameras for measuring wheat senescence rates compared to traditional methods.

Measuring Wheat Senescence with a Digital Camera

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Randomized trial measures wheat senescence rates using digital cameras, indicating new methods for crop monitoring.

The aim is to assess the feasibility of digital cameras for measuring wheat senescence rates compared to traditional methods.
Implemented imaging techniques including a digital camera, radiometer, and SPAD chlorophyll meter.
Calculated green to red (GIR) values for images representing 1 m² of wheat for each treatment and sample date.
Analyzed relationships between GIR, NDVI, and SPAD measurements to evaluate their effectiveness.
All three greenness measurement methods exhibited similar temporal trends during senescence.
GIR measurements were more sensitive at higher values (above 1.2) compared to SPAD, which was limited by chlorophyll concentration.
NDVI demonstrated increased sensitivity at lower values relative to GIR.

Adamsen et al. (1999) studied this question.

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