Review of novel and emerging proximal soil moisture sensors for use in agriculture

M Hardie - Sensors, 2020 - mdpi.com
The measurement of soil moisture in agriculture is currently dominated by a small number of
sensors, the use of which is greatly limited by their small sampling volume, high cost, need …

Low-error soil moisture sensor employing spatial frequency domain transmissometry

T Saito, T Oishi, M Inoue, S Iida, N Mihota, A Yamada… - Sensors, 2022 - mdpi.com
A new type of soil moisture sensor using spatial frequency domain transmissometry (SFDT)
was evaluated. This sensor transmits and receives ultrawideband (1 to 6 GHz) radio waves …

Investigation of Dielectric Measurement Model for Coconut Fiber Water Content and the Associated Factors

X Yan, J Chen, Z Yang, Z Mu, J Xu - Sustainability, 2023 - mdpi.com
Coconut fiber has excellent permeability and water retention properties, making it a popular
choice as an organic substrate for cultivation in the field of facility agriculture. To investigate …

Application of a monopole antenna probe with an optimized flange diameter for TDR soil moisture measurement

J Majcher, M Kafarski, A Wilczek, A Woszczyk… - Sensors, 2020 - mdpi.com
Soil volumetric water content (θ) is a parameter describing one of the most important factors
conditioning proper plant growth. Monitoring soil moisture is of particular importance in the …

Soil moisture evaluation with spiral fringing field capacitive sensors

BA Oommen, J Philip - International Journal of Environmental Science and …, 2024 - Springer
This work reports the design, fabrication, implementation and testing of Archimedean spiral,
fringing field, planar interdigital capacitive sensor employing printed circuit board technology …

Dielectric properties of glass beads with talc as a reference material for calibration and verification of dielectric methods and devices for measuring soil moisture

J Szerement, H Saito, K Furuhata, S Yagihara… - Materials, 2020 - mdpi.com
This paper presents dielectric measurements of talc, glass beads, and their mixtures under
different moisture and salinity levels. The measurements were conducted using a prototype …

Effect of soil compaction on the measurements of complex dielectric permittivity spectrum with an open-ended antenna probe and the coaxial cell system

M Budzeń, M Kafarski, A Szypłowska, A Wilczek… - Measurement, 2024 - Elsevier
The paper proposes the use of dielectric spectroscopy to measure changes in dielectric
permittivity for soil subjected to compression. Density-dependent dielectric permittivity …

High-Sensitivity and Wide-Range Antenna Sensor Based on EBG and SiO2 for Soil Water Content Monitoring

H Zhai, X Xuan, Z Chen, M Li… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
There are many problems with agricultural technology around the world, such as extensive
irrigation which causes the waste of water. To significantly improve the efficiency of irrigation …

Влияние диэлектрических релаксаций почвенной воды на температурную зависимость диэлектрической проницаемости почвы

АЮ Каравайский, ЮИ Лукин - ЖУРНАЛ РАДИОЭЛЕКТРОНИКИ, 2023 - jre.cplire.ru
С помощью обобщенной рефракционной диэлектрической модели смеси изучено
влияние спектров относительной диэлектрической проницаемости связанной и …

Influence of Dielectric Relaxations of Soil Water on the Temperature Dependence of Soil Permittivity

AY Karavayskiy, YI Lukin - Optics and Spectroscopy, 2023 - Springer
Using a generalized refractive mixture dielectric model, the influence of the relative
permittivity spectra of bound and unbound water in mineral soil on the nature of the …