PROTOTYPING AND CALIBRATION OF A LOW COST CHLOROPHILOMETER COMPOSED BY LDR’S FOR DETERMINING NDVI
DOI:
https://doi.org/10.17224/EnergAgric.2021v36n2p193-203Abstract
The present project aimed to develop and calibrate a low-cost chlorophyll meter and purchase the data acquired with the data found with the GreenSeeker® sensor on predetermined surfaces. The apparatus was developed using materials from the local market and recycled. The readings were taken at 11:00 am on asphalt surfaces, healthy vegetation, dry vegetation, mixture of dry and healthy vegetation and gravel, all at a distance of 60 cm. The collected data were compared using Excel and a graph with a trend line was created to evaluate the correlation between the two devices. The correlation factor was satisfactory, reaching an R² greater than 0.90. The cost of building the apparatus was below GreenSeeker® values.
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