I want to design an IoT based fertilizer recommendation system in which using temperature, moisture, humidity and NPK sensors, you can obtain the data on soil nutrients and you will get the exact fertilizer name and amount to add for maximizing the yield and simultaneously reducing soil pollution. The NPK sensors currently available in the market are expensive and not feasible for small farmers. I'm completely new to IoT. I considered one possibility where one could develop algorithms or models that estimate nutrient levels based on the available low-cost sensors (temperature, moisture, humidity). Is this a true possibility? If yes, then will it be accurate enough?
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