Skip to main content

Table 3 LOEC, EC50, and EC10 values of the 2,4-D tests regarding growth

From: Impact of heterophylly on the sensitivity of Myriophyllum aquaticum biotests

Adaptation time to the submerged state

NOEC (μg a.i./L)

LOEC (μg a.i./L)

EC50 (95% confidence interval) (μg a.i./L)

EC10 (95% confidence interval) (μg a.i./L)

Fresh weight

    

 no

>2,000

>2,000

>2,000

123.1 (26.7 to 568.4)

 7 days

>2,000

>2,000

>2,000

>2,000

 28 days

500

2,000

>2,000

1,918 (1,917 to 1,918)

Shoot length

    

 no

>2,000

>2,000

>2,000

>2,000

 7 days

>2,000

>2,000

>2,000

>2,000

 28 days

500

2,000

3,835 (3,822 to 3,848)

1122 (259.4 to 4852)

Root length

    

 no

125

500

264.3 (101.3 to 689.3)

26.5 (3.1 to 229.5)

 7 days

31.25

125

157.8 (76.7 to 324.5)

30.3 (6.2 to 148.0)

 28 days

7

31.25

46.9 (34.1 to 64.5)

9.2 (4.5 to 18.7)

  1. LOEC values are calculated by Dunnet’s multiple comparison test. ECx values are determined by non-linear regression analysis of the concentration-response curve.