Can root electrical capacitance be used to predict root mass in soil? | Zendy

R. C. Dietrich | Zendy; A. Glyn Bengough | Zendy; H. G. Jones | Zendy; Philip J. White | Zendy

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Can root electrical capacitance be used to predict root mass in soil?

Author(s) -

R. C. Dietrich,

A. Glyn Bengough,

H. G. Jones,

Philip J. White

Publication year - 2013

Publication title -

annals of botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.567

H-Index - 176

eISSN - 1095-8290

pISSN - 0305-7364

DOI - 10.1093/aob/mct044

Subject(s) - capacitance , capacitance probe , materials science , compost , differential capacitance , capacitor , substrate (aquarium) , soil water , water content , soil science , agronomy , environmental science , electrode , biology , chemistry , electrical engineering , voltage , ecology , engineering , geotechnical engineering

Electrical capacitance, measured between an electrode inserted at the base of a plant and an electrode in the rooting substrate, is often linearly correlated with root mass. Electrical capacitance has often been used as an assay for root mass, and is conventionally interpreted using an electrical model in which roots behave as cylindrical capacitors wired in parallel. Recent experiments in hydroponics show that this interpretation is incorrect and a new model has been proposed. Here, the new model is tested in solid substrates.

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