We have designed a soil nutrient sensor that detects and quantifies the amount of Nitrogen, Potassium and Phosphorous in the soil sample. After soil testing has been done in the laboratory with the help of chemical reagents, ...

Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are ...