Table 1 Basic properties of soil substrate at the beginning of incubation and qualities of plant powders.

From: Inhibition of litter decomposition of two emergent macrophytes by addition of aromatic plant powder

Material

Organic C concentration (%)

N concentration (%)

P concentration (%)

Essential oils concentration (% dry mass)

Plant powder species

P. hydropiper

42.21 ± 2.11

2.07 ± 0.103

0.362 ± 0.051

0.42 ± 0.11**

C. brevicuspis

44.14 ± 1.88

1.91 ± 0.142

0.225 ± 0.066

0.01 ± 0.00

Soil type

No addition

1.73 ± 0.14

0.110 ± 0.004 a

0.060 ± 0.002 a

Low P. hydropiper

1.71 ± 0.06

0.120 ± 0.003 b

0.065 ± 0.001 b

High P. hydropiper

1.71 ± 0.10

0.129 ± 0.002 c

0.063 ± 0.002 b

Low C. brevicuspis

1.73 ± 0.07

0.121 ± 0.005 b

0.061 ± 0.002 ab

High C. brevicuspis

1.73 ± 0.07

0.131 ± 0.005 c

0.063 ± 0.001 b

  1. Values are means ± S.E. (n = 3). Different lowercase letters (a, b, c) indicate significant difference in soil substrate among treatments (LSD test, P < 0.05). **Indicates significant difference between P. hydropiper and C. brevicuspis powders (t-test, P < 0.01).