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NDVI |
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Using a baseline reading on a 45'-wide N-rich check strip of corn that already had 200 units of N applied to it, the light data from the rest of the field is automatically quantified and plugged into a formula that calculates a variable called the NDVI (Normalized Difference Vegetation Index). NDVI is an indicator of photosynthetic activity and is associated with saturation deficit and rainfall. The NDVI is a measurement of vegetation stress and is directly related to relative humidity and rainfall, as well as to vegetation growth. |
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