Detection of plant water content with needle-type in-situ water content sensor

Hitoshi Katayanagi, Norihisa Miki

Research output: Contribution to journalArticle

Abstract

A needle-type water content sensor with a polyethersulfone (PES) polymer membrane was developed for the low-invasive, direct in-situ measurement of plant water content (PWC) in prior work. In this paper we demonstrate a measurement of plant water stress that represents the demand for water of the plant and greatly affects its sweetness. We inserted the sensor into a stalk of strawberry (Fragaria×ananassa) and soil. The variation in both the plant and the soil water content were successfully detected, which revealed the delay between variation in the plant water stress and soil water content after irrigation. Such delay could only be detected by the proposed sensor that could directly measure the variation of PWC in situ and continuously. The experiments also showed the variation in the signals as a function of detection sites and suggested that the detection sites of plant water stress need to be considered when the sensor is applied to irrigation culture.

Original languageEnglish
Pages (from-to)452-453
Number of pages2
JournalIEEJ Transactions on Sensors and Micromachines
Volume130
Issue number9
DOIs
Publication statusPublished - 2010

Fingerprint

Needles
Water content
Sensors
Soils
Irrigation
Water
Membranes
Polymers
Experiments

Keywords

  • Irrigation agriculture
  • Plant water content
  • Polyethersulfone
  • Water stress sensor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Detection of plant water content with needle-type in-situ water content sensor. / Katayanagi, Hitoshi; Miki, Norihisa.

In: IEEJ Transactions on Sensors and Micromachines, Vol. 130, No. 9, 2010, p. 452-453.

Research output: Contribution to journalArticle

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