Interaction between Vetiver Grass Roots and Completely Decomposed Volcanic Tuff under Rainfall Infiltration Conditions

Table 5

Grain-size distribution of different samples.

Sample number	Gain; size (mm)
	10~5	5~2	2~0.5	0.5~0.25	0.25~0.075	0.075~0.005	<0.005
Nonrooted sample_1	2.7	32.7	12.8	1.9	20.7	19.7	9.5
Nonrooted sample_2	3.7	38.2	12.5	2	16.1	17.2	10.3
Nonrooted sample_3	7.4	25.7	5.3	0.9	10.9	25.9	23.9
Rooted sample_1	2.2	36.1	8.9	1.2	10.5	21	20.1
Rooted sample_2	2	25.6	10.6	1.5	15.8	26.1	18.4
RootedSample_3	1.1	22.2	8.1	1.1	13.3	30.7	23.5
RootedSample_4	3.6	26.3	10	1.7	13.4	25.4	19.6
RootedSample_5	2.7	37.8	7.6	1.1	10.6	20.5	19.7