IoT based soil nutrient sensing system for agriculture application
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Date
2021-12Author
N. N. C., Othaman
M. N. Md Isa
R., Hussin
S. M. M. S., Zakaria
M. M., Isa
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Show full item recordAbstract
Rice is the primary food source for millions of Asians and satisfies the most fundamental
requirement for human survival. The paddy scarcity has heightened public awareness of the
global food problem. Rice yield and quality are affected by various factors, including soil
nutrients, irrigation, types of soil, and pests. This work proposed developing an Internet of
Things (IoT) based mobile device for measuring soil nutrients in real-time. The proposed
system consists of electrical conductivity (EC) and temperature sensors with TTGO T-Beam
microcontroller and IoT connectivity. During experimental work, the results showed that the
observed EC data near the calibration solution conductivity of 12.88mS/cm and 150mS/cm,
which are less than 2% from the calibration solution's stated value. Furthermore, it is found
that the measured EC value increases with temperature (linearly proportional). The study
showed that the soil's EC of sensor node 1 at 5 cm depth without fertiliser is 1.04375mS/cm
and with fertiliser is 3.86mS/cm, while at 10 cm depth without fertiliser is 0.65625mS/cm
and with fertiliser is 420mS/cm. These investigations show that soil EC is directly linked to
nutrient availability and soil depth.