Optical Sensing of Soil Nutrients for ‘Smart Farming’

Over the years, chemical fertilisers have been applied to soil in order to increase their fertility. However over or under application of fertilisers can damage the crop yield and also cause serious ecological concerns. Soil testing thus acquires an important place in farming, specifically in site specific crop management. Non-destructive in-situ measurements of soil nutrients with cost effective optical sensing methods can help in determining and monitoring the nutrient levels in the soil....

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