Performance evaluation of low-cost IoT based chlorophyll meter

Lack of nutrients in plants causes significant losses resulting in crop failure. Nitrogen is one of the macro nutrients in the soil that can be known through the chlorophyll content in plant leaves. In this paper, a low-cost IoT-based chlorophyll meter has been developed to provide information about the chlorophyll content of plants. The performance of a low-cost IoT-based chlorophyll meter has been compared with the performance of a spectrophotometer (SP-3000nano) and a commercial chlorophyll meter (SPAD-502). A low-cost IoT-based chlorophyll meter has been functioning properly which is able to measure the chlorophyll content of plants in the field, get positions based on GPS satellites, store data in a memory module, and send data to the database server. The test results showed a significant relationship between SPAD-502 values and low-cost IoT-based chlorophyll meter values. An IoT-based chlorophyll meter can be used as a cheap alternative to the SPAD-502 chlorophyll meter.