# Energy-Efficient Wireless Sensor Networks for Precision Agriculture: A Review
## 4 Agriculture Requirements for IoT
\begin{table}
\begin{tabular}{l l l l l l} \hline \hline
**Reference** & \multicolumn{1}{c}{**Sensors/Actuators**} & \multicolumn{1}{c}{**IoT End Device**} & \multicolumn{1}{c}{**IoT Platform/Device**} & \multicolumn{1}{c}{**IoT Application Layer**} \\
**Example** & & & & & \\ \hline
[8]/2016 & Sol temperature, Soil moisture, air temperature, air humidity and & LoRa & LoRaWAN & User interface, remote monitoring, and email \\  & high intensity/sized messages & & & & \\ \hline
[42]/2015 & Sol moisture, temperature, pressure, and water electrical & ZigBee & GSM/GPSR & Web application (HTML5, PHF, and Javascript) \\  & conductivity and temperature & & & & \\ \hline
[95]/2017 & Air temperature, soil moisture, air humidity, and light intensity & WH (ESP826) & WH & Web services \\ \hline
[143]/2016 & Camera to monitor the rice leaf disease & Sensor networks & Wisekar and cloud Computing & Web application and user-defined \\ \hline
[144]/2017 & Temperature, humidity, soil moisture, and wind direction and speed & HR wireless & Intel Edison and cloud computing & User interface and custom server \\  & & protocol & & \\ \hline
[145]/2015 & Temperature and soil moisture/electrovalve & e2430-RF2500 & WiFi 802.11 or GPRS through http and Cloud computing & Web applications \\  & & Zigbee-based CC2500 & SmartArmNet and & Server application, user interface, and \\ \hline
[147]/2016 & Temperature and soil moisture/irrigation system & Neighbor, Auto, etc. & Cloud computing & do-it-yourself visualization \\ \hline
[150]/2015 & Temperature, humidity, light, pressure, camera, CO\({}_{2}\), and wind & ZigBee & Ethernet shield and GPRS & User applications and server applications \\  & direction and speed/air flow, sprinkler, and sunlight screen & ZigBee & Zigbee (D3 ee) & Ethernet/Wifi/CSM & User applications \\ \hline
[151]/2015 & Ambient temperature, soil moisture, pH value, and humidity/valves & ZigBee (D3 ee) & Ethernet/Wifi/CSM & User applications \\  & and pumps & & & \\ \hline
[152]/2015 & Air temperature, wind speed/direction, air humidity, air pressure, & IEEE 802.11 or Bluetooth & GPRS & User applications (desktop client, web client, and mobile client) and web processing service \\  & net radiation, sunshine duration, and precipitation/irrigation system & Hyperogenous & Epgyrous computer & HTML files, Webpage, and Smartphone \\ \hline
[153]/2015 & Pesticode concentration sensor & computer & Epgyrous computer & \\ \hline Air temperature, relative humidity, solar radiation, precipitation, & IEEE & FIWARE platform and cloud computing & Web services, data analysis, and database \\  & water, and nutrients/irrigation system & 802.15.4/ ZigBee & Computing & \\ \hline
[155]/2016 & Temperature, Luminosity, PH, moisture, EC/lamps, electro-valves, and pumps & IEEE & Cloud computing & Web services, data analysis, database, and \\  & and pumps & & 802.15.4/ ZigBee & Cloud computing & \\ \hline
[156]/2016 & Temperature, light intensity CO\({}_{2}\) concentration, and humidity & ZigBee (CC2530) & GPRS (SM300 module) & User application \\ \hline
[157]/2016 & Soil moisture/water pumps, fan, and mist & ZigBee (D3 ee) & WiFi and GSM/CPRS & Graphical user interface \\ \hline
[158]/2016 & Air temperature, wind speed and direction, leaf wetness, soil & IEEE 802.11b/g/n (WiFi) and & Data visualization, data storage, data analysis, and application program interface \\  & and watering system & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Sensors, actuators, and platforms used in agricultural applications based on IoT.