Irrigation-friendly sensor to manage drought in crops through carbon-based signature volatile sensing

Abstract

Water scarcity is a global challenge in agriculture, which is growing unprecedentedly. Hence, a metal oxide decorated graphene oxide (GO) particles coated interdigitated chemo-resistive volatile sensor has been developed here to sense beta-caryophyllene, an important signature terpene molecule released by the plant during water stress. The interface between the ZnO and GO composite has been found to show outstanding complementary behavior, through selective permittivity and optimum working temperature, which cause oxidization at multiple sites that take the sensitivity to -27 ppb concentration. The sensor has been validated in the crop that experiences water stress equivalent to 3 wet units in the soil moisture tensiometer, which is the critical value to irrigate the crop.

Keywords

Nano agriculture; Volatile; Sensor; Nano -carbon; Drought

Published in

Sensors & Actuators: B. Chemical
2024, volume: 403, article number: 134975
Publisher: ELSEVIER SCIENCE SA

SLU Authors

• Kanagarajan, Selvaraju

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Nano-technology
Agricultural Science

Publication identifier

• DOI: https://doi.org/10.1016/j.snb.2023.134975

Permanent link to this page (URI)

https://res.slu.se/id/publ/128279