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Proceedings 2017, 1(4), 420; doi:10.3390/proceedings1040420

Multimodal Probe Based on ISFET Electrochemical Microsensors for In-Situ Monitoring of Soil Nutrients in Agriculture

1
Laboratory for Analysis and Architecture of Systems (LAAS-CNRS), 7 avenue du Colonel Roche, 31400 Toulouse, France
2
Agronutrition, 3 avenue de l’Orchidée, 31390 Carbonne, France
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 17 August 2017
Download PDF [573 KB, uploaded 16 August 2017]

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
Keywords: ISFET sensor; in-situ soil analysis; multisensor probe; ion-selective membrane; nutrients levels determination; agriculture ISFET sensor; in-situ soil analysis; multisensor probe; ion-selective membrane; nutrients levels determination; agriculture
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Joly, M.; Mazenq, L.; Marlet, M.; Temple-Boyer, P.; Durieu, C.; Launay, J. Multimodal Probe Based on ISFET Electrochemical Microsensors for In-Situ Monitoring of Soil Nutrients in Agriculture. Proceedings 2017, 1, 420.

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