• Vinodhini P
• Rajalakshmi S
• Ragavendar S,
• Sakthivel R

In this paper, we will learn about IoT Based Soil Nutrient Monitoring & Analysis systems using Arduino & ESP8266. Soil is the base of agriculture. Soil provides nutrients that increase the growth of a crop. Some chemical and physical properties of soil, such as its moisture, temperature, soil nitrogen, phosphorous & potassium content heavily affect the yield of a crop. These properties can be sensed by the open-source hardware, and they can be used in the field. Agriculture depends on many parameters as inter and intra variabilities of plants to give better yields such as soil parameters, climatic parameters so on. Here the system is designed to collect the data set for major parameters such as soil moisture, soil temperature, and soil nutrient content like Nitrogen, Phosphorous & Potassium. The farmer can monitor all these parameters wirelessly on a mobile phone or the PC System. To measure the Soil Moisture, we will use a Capacitive Soil Moisture Sensor. The temperature of the soil can be measured using the DS18B20 Waterproof Temperature Sensor. Similarly, in order to measure the Soil NPK Values, we will use a Soil NPK Sensor. All these sensors can be easily interfaced with Arduino. Data sets collected were used for the analysis of selection of crops. The obtained results were compared with the standardized optimum values for the particular crops and based on the differences inputs for the crops are varied. Multi sensor implementation for acquiring primary parameters essential for plant growth is the main aim of the paper. Easily available sensors were a motivation for the development of this project.

Arduino UNO, Soil Moisture, NPK Sensor, Temperature Sensor, LCD, ESP8266(Wi-Fi Module).

"Design And Implementation of Nutrient Level Monitoring System In Agricultural Soil Using IoT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 5, page no.b227-b234, May-2022, Available :http://www.jetir.org/papers/JETIR2205132.pdf

"Design And Implementation of Nutrient Level Monitoring System In Agricultural Soil Using IoT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 5, page no. ppb227-b234, May-2022, Available at : http://www.jetir.org/papers/JETIR2205132.pdf