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Multimodal probe based on ISFET electrochemical microsensors for in-situ monitoring of soil nutrients in agriculture

Matthieu Joly 1 Laurent Mazenq 2 Maurane Marlet Pierre Temple-Boyer 1 Céline Durieu Jérôme Launay 1
1 LAAS-MICA - Équipe MICrosystèmes d'Analyse
LAAS - Laboratoire d'analyse et d'architecture des systèmes
2 LAAS-TEAM - Service Techniques et Équipements Appliqués à la Microélectronique
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : We report the design of a silicon chip dedicated to the in-situ monitoring of soil nitrogen cycle in wheat crop. Our study shows that ion-sensitive field effect transistor (ISFET) microsensors are suitable for quick on-site or long-term analysis of nutrients measured directly in soil as opposed to soil extracts analysis. Our pH-ISFET recorded soil pH for six months with results in good accordance with standard sampling method and without any loss of sensitivity. The adaptation of pH-ISFET in pNO3 and pNH4-ISFET allowed, for the first time, the in-situ measurements of natural variations of soil nitrogen contents caused by microorganisms' activity
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https://hal.laas.fr/hal-01687830
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Submitted on : Wednesday, February 7, 2018 - 7:16:36 PM
Last modification on : Friday, January 10, 2020 - 9:10:15 PM
Long-term archiving on: : Tuesday, May 8, 2018 - 1:00:41 PM

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  • HAL Id : hal-01687830, version 1

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Matthieu Joly, Laurent Mazenq, Maurane Marlet, Pierre Temple-Boyer, Céline Durieu, et al.. Multimodal probe based on ISFET electrochemical microsensors for in-situ monitoring of soil nutrients in agriculture. 31th European Conference on Solid-State Transducers, EUROSENSORS XXXI, Sep 2017, Paris, France. ⟨hal-01687830⟩

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