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. 2018 Jan 17;8:916. doi: 10.1038/s41598-018-19240-1

Figure 1.

Figure 1

Silicon contents in three soil texture classes using conventional (□) and microwave oven (■) methods with the CaCl2, deionized water, KCl, Na-acetate buffer (pH 4.0) (Sod. acet.) and acetic acid extractants. Means followed by the same uppercase letter within the same method or lowercase within the same extractant for each soil texture are not significantly different (P < 0.05, LSD test).