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Fig. 3 | Plant Methods

Fig. 3

From: Benchmarking electrical methods for rapid estimation of root biomass

Fig. 3

Impact of the stem contact electrode on the measured electrical capacitance of the plant–soil system. Plot of the mean relative difference between the parallel capacitance measured with a clamp and that measured with a needle, as a function of frequency, in 2T (filled square), 3T (filled triangle) and 4T (plus symbol) configurations. Differences are <6 % for frequencies <200 Hz in 3T configuration

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