Role of phase angle measurement in electical impedance spetroscopy

• Autorzy: Cseresnyes I. , Rajkai K. , Vozary E.
• Języki publikacji: EN

Abstrakty

EN

Importance of phase angle measurement during the application of electrical impedance spectroscopy was studied by executing pot experiments with maize. Electrical impedance, phase angle (strength of capacitive character), and dissipation factor in the plant-soil system were scanned between 100 and 10 000 Hz current frequency. The frequency-dependent change in the phase angle could be described by optimum curves culminating within 920-3 650 Hz. Since the rate of energy dissipation is independent of root extent, the higher phase angle and lower energy dissipation were associated with the higher coefficient of determination achieved for the root electrical impedance – root system size (root dry mass and root surface area) regressions. The characteristic frequency selected on the basis of phase angle spectra provided a higher significance level at statistical comparison of plant groups subjected to stress conditions influencing root development. Due to the physicochemical changes observable in aging root tissue, the apex of phase angle spectra, thus the characteristic frequency, shifted continuously toward the higher frequencies over time. Consequently, the regularly repeated phase angle measurement is advisable in time-course studies for effective application of the electrical impedance method, and the systematic operation at the same frequency without determination of phase angle spectra should be avoided.

• Wydawca: -
• Czasopismo: International Agrophysics
• Rocznik: 2013
• Tom: 27
• Numer: 4
• Opis fizyczny: p.377-383,fig.,ref.

Twórcy

autor

Cseresnyes I.

• Institute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Otto 15, H-1022 Budapest, Hungary

autor

Rajkai K.

• Institute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Otto 15, H-1022 Budapest, Hungary

autor

Vozary E.

• Department of Physics and Control, Corvinus University of Budapest, Somloi 14-16, H-1118 Budapest, Hungary

Bibliografia

• Abu-Qare A.W. and Duncan H.J., 2002. Herbicide safeners: uses, limitations, metabolism, and mechanisms of action. Chemosphere, 48, 965-974.
• Aubrecht L., Stanìk Z., and Koller J., 2006. Electrical measurement of the absorption surfaces of tree roots by the earth impedance methods: 1. Theory. Tree Physiol., 26, 1105-1112.
• Aulen M. and Shipley B., 2012. Non-destructive estimation of root mass using electrical capacitance on ten herbaceous species. Plant Soil, 355, 267-280.
• Beem J. van, Smith M.E., and Zobel R.W., 1998. Estimating root mass in maize using a portable capacitance meter. Agronomy J., 90, 566-570.
• CaoY.,RepoT., SilvennionenR.,LehtoT., andPelkonenP., 2010. Anappraisal of the electrical resistance method for assessing root surface area. J. Exp. Bot., 61, 2491-2497.
• Èermák J.,UlrichR., StanìkZ.,Koller J., andAubrechtL., 2006. Electrical measurement of tree root absorbing surfaces by the earth impedance method: 2. Verification based on allometric relationships and root severing experiments. Tree Physiol., 26, 1113-1121.
• Chloupek O., 1972. The relationship between electric capacitance and some other parameters of plant roots. Biologia Plantarum, 14, 227-230.
• Chloupek O., 1977. Evaluation of the size of a plant's root system using its electrical capacitance. Plant Soil, 48, 525-532.
• ChloupekO., ForsterB.P., andThomasW.T.B., 2006.The effect of semi-dwarf genes on root system size in field-grown barley. Theor. Appl. Genet., 112, 779-786.
• Cseresnyés I., Fekete G., Végh R.K., Székács A., Mörtl M., and Rajkai K., 2012. Monitoring of herbicide effect in maize based on electrical measurements. Int. Agrophys., 26, 243-247.
• Cseresnyés I., Takács T., Végh R.K., Anton A., and Rajkai K., 2013. Electrical impedance and capacitance method: a new approach for detection of functional aspects of arbuscular mycorrhizal colonization in maize. Eur. J. Soil Biol., 54, 25-31.
• Dalton F.N., 1995. In-situ root extent measurements by electrical capacitance methods. Plant Soil, 173, 157-165.
• Euring F., Russ W., Wilke W., and Grupa U., 2011. Development of an impedance measurement system for the detection of decay of apples. Procedia Food Sci., 1, 1188-1194.
• Greenham C.G., Randall P.J., and Müller W.J., 1982. Studies of phosphorus and potassium deficiencies in Trifolium subterraneum based on electrical measurements. Can. J. Bot., 60, 634-644.
• Kendall W.A., Pederson G.A., and Hill R.R., 1982.Root size estimates of red clover and alfalfa based on electrical capacitance and root diameter measurements. Grass Forage Sci., 37, 253-256.
• Li X., Toyoda K., and Ihara I., 2011. Coagulation process of soymilk characterized by electrical impedance spectroscopy. J. Food Eng., 105, 563-568.
• Ozier-Lafontaine H. and Bajazet T., 2005. Analysis of root growth by impedance spectroscopy (EIS). Plant Soil, 277, 299-313.
• Preston G.M., McBride R.A., Bryan J., and Candido M., 2004. Estimating root mass in young hybrid poplar trees using the electrical capacitance method. Agroforestry Sys., 60, 305-309.
• Rajkai K., Végh R.K., and Nacsa T., 2002. Electrical capacitance as the indicator of root size and activity. Agrokémia és Talajtan, 51, 89-98.
• Rajkai K., Végh R.K., and Nacsa T., 2005. Electrical capacitance of roots in relation to plant electrodes, measuring frequency and root media. Acta Agr. Hung., 53, 197-210.
• Repo T. and Zhang M.I.N., 1993. Modelling woody plant tissues using a distributed electrical circuit. J. Exp. Bot., 262, 977-982.
• Repo T., Zhang M.I.N., Ryyppö A., and Rikala R., 2000. The electrical impedance spectroscopy of Scots pine (Pinus sylvestris L.) shoots in relation to cold acclimation. J. Exp. Bot., 353, 2095-2107.
• Soltani M., Alimardani R., and Omid M., 2011. Evaluating banana ripening status from measuring dielectric properties. J. Food Eng., 105, 625-631.
• Żywica R., Banach J.K., and Kie³czewska K., 2012. An attempt of applying the electrical properties for the evaluation of milk fat content of raw milk. J. Food Eng., 111, 420-424.

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