Table 1

Effects of NM-101 in the earthworm reproduction test

Test and test start

Test concentration (mg/kg sdm)

Mortality (%)

Biomass per vessel at test start (g) ± SD

Biomass per vessel at test end (g) ± SD

Increase in biomass (%)

Number of juveniles per test vessel ± SD

SD (%)

Effect on reproduction (%)


Test 1 - February 2010

0 (control)

0

3.65 ± 0.21

6.06 ± 0.26

66

303 ± 25

8.3

-

50

0

3.40 ± 0.18

6.22 ± 0.29

83

322 ± 20

6.2

-6.3a

100

0

3.33 ± 0.32

6.31 ± 0.13

91

353 ± 11

3.1

-16.5a*

200

0

3.27 ± 0.14

6.24 ± 0.38

91

373 ± 41

11.0

-23.8a**

Test 2 - January 2011

0 (control)

0

3.65 ± 0.22

5.65 ± 0.26

55

223 ± 15

6.7

-

50

0

3.56 ± 0.28

5.83 ± 0.38

64

213 ± 22

10.3

4.5

100

0

3.57 ± 0.22

5.94 ± 0.30

67

210 ± 16

7.6

5.8

200

0

3.60 ± 0.24

5.77 ± 0.28

60

213 ± 47

22.1

4.5

400

0

3.44 ± 0.15

5.88 ± 0.39

71

234 ± 20

8.6

-4.9a


aNegative values indicate stimulation. sdm, soil dry matter; SD, standard deviation. Asterisks indicate a statistically significant difference to controls (*0.05 ≥ p ≥ 0.01; **0.01 ≥ p ≥ 0.001).

Schlich et al. Environmental Sciences Europe 2012 24:5   doi:10.1186/2190-4715-24-5

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