Detection of Macronutrients (NPK) using LED Based Spectroscopy Method

  Nishad Kumbhare,  S. R. Kumbhar

The soil is a dominant medium to grow the plants in which the soil nutrients especially macronutrients play a major role to improve the fertility and hence growth of seeds and crops. The traditional geochemical analytical methods to explore macronutrients used in agricultural laboratories give accurate results, but it is more time consuming, so the need for different chemicals and highly skilled workers are required at prior. Instead, the modern methods are beneficial to explore major macronutrients i.e. Nitrogen, Phosphorus and Potassium (Kalium – Latin name) with the help of electronic sensors that give accurate results without the need of chemicals and highly skilled staff. Hence, the farmer himself can explore the macronutrients NPK concentration and deficiencies and then use proper fertilizers to improve the soil fertility with the reference of an ideal ratio for NPK i.e. 4:2:1. This paper reviews the different modern electronic analytical methods to determine NPK concentrations without going into the agriculture laboratory. LED based spectroscopy focused in this research paper is an emerging technology without destruction of target soil matters or particles. It’s timely, reliable and less expensive compared to the other methods explained.

Keywords- Macronutrients, NPK, LED Spectroscopy, Soil

Unique Identification Number - IJEDR2301006
Page Number(s) - 34-39
Pubished in - Volume 11 | Issue 1 | January 2023
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Nishad Kumbhare,  S. R. Kumbhar,   "Detection of Macronutrients (NPK) using LED Based Spectroscopy Method", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.11, Issue 1, pp.34-39, January 2023, Available at :http://www.ijedr.org/papers/IJEDR2301006.pdf