Table 5 Smart irrigation application, its techniques and types of IoT sensors needed for each case.

From: A technical survey on practical applications and guidelines for IoT sensors in precision agriculture and viticulture

App

Tech

SWCS

SWTS

ATS

ARHS

WSaDS 

SRS

APS

SFS

LTS

MTS

LTuS

D

WLS

WTS

References

Smart irrigation

Soil water content

\(\checkmark\)

23,26,27,103,10473,108,109,120,121

Water tension in the Soil

\(\checkmark\)

\(\oplus\)

26,30,73

Crop evapotranspiration

\(\checkmark\)

\(\checkmark\)

\(\checkmark\)

\(\checkmark\)

\(\oplus\)

32,33,186

Sap Flow

\(\checkmark\)

45,187,188

CWSI

\(\checkmark\)

\(\checkmark\)

47,189

Stem Water Potential

\(\checkmark\)

60

Leaf Turgor

\(\checkmark\)

63

Dendrometry

\(\checkmark\)

24,67

Water level in reservoirs

\(\checkmark\)

73

  1. Cells symbols: \(\checkmark\), mandatory parameter; and \(\oplus\), optional parameter.
  2. Header acronyms: App, application; Tech, technique; SWCS, Soil water content sensor; SWTS, Soil Water Tension Sensor; ATS, Air Temperature Sensor; ARHS, Air Relative Humidity Sensor; WSaDS, Wind Speed and Direction Sensor; SRS, Solar Radiation Sensor; APS, Atmospheric Pressure Sensor; SFS, Sap Flow Sensor; LTS, Leaf Temperature Sensor; MTS, Microtensiometer Sensor; LTuS, Leaf Turgor Sensor; D, Dendrometer; WLS, Water Level Sensor; WTS, Waterproof Temperature Sensor