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Addition of Aerosil 300 led to a linear increase of plant-available Si concentrations, ranging from 5. situs judi slot online yang gampang menang 23 to 26. bangkit slot 54 mg kg −1 in the 14 experimental substrates and covered about 85% of the natural variation of plant-available Si found in forest soils in the region (2 25–39 88 mg kg −1; Schaller et al 2018)