"concentration of roots" is a correct and usable phrase in written English
It is often used in scientific or technical writing to refer to the density or abundance of a particular type of root in a certain area. Example: The study found a high concentration of roots in the topsoil of the rainforest, indicating a thriving ecosystem.
The SMP should be controlled at −5 to −10 kPa in the second year for irrigation with saline water of >3 dS/m, to promote a greater concentration of roots in the lower-salt top soil.
However, mean root lifespan became significantly correlated with soluble carbon concentration of roots in the rhizome-severed plots (Fig. 8B; r2 = 0.44, P = 0.0068).
The ameliorative effects of B was not brought about by an increase in the B concentration of roots, stems and leaves, because B concentration was not lower in +Al roots, stems and leaves than in -Al ones (Fig. 2D F).
Concentration of root secretions was performed through centrifugal evaporation using a RVC 2 25 (Martin Christ Corporation, Osterode, Germany) at 30 °C.
Besides, we measured nitrate concentration of root, leaf sheath and leaf blade in the seedlings with different expression lines.
The dispersion quality of SP-HRG in deionized water was investigated in detail by preparing different samples of SP-HRG with increasing concentration of root extract.
Although, 10 mL aqueous root extract (100 mg/mL) was found to be sufficient for the complete reduction of GRO, three different samples of SP-HRG (prepared by increasing the concentration of root extract) were also used to further investigate the effect of concentration of root extract on the dispersion quality of SP-HRG.
Water loss; nitrate reductase activity; nitrate and total N of the sap; nitrate concentration of leaf dry matter; and nitrate and nitrite concentration of root dry matter were, either, evaluated.
However, local concentration of root exudates is higher than the concentration in bulk soil solution.
Therefore, it would be interesting to see whether continuous application of a lower concentration of root exudates has a sustained inhibitory effect.
Compartmental analyses indicated that the nitrate concentration of root vacuoles is ∼10-fold higher compared to the cytosol (Zhen et al., 1991).
