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

Figure 2.

Figure 2

Relationship between clay and Si contents in three soil texture classes using conventional (◆) and microwave oven (□) methods with CaCl2, deionized water, KCl, Na-acetate buffer (pH 4.0) and acetic acid extractants. Note: when comparing soil textures it is important to take in account the differences between the axes scales.