Time

(Days)

Parameter

Control

Irgarol 1051 concentrations (µg/l)

F (p)

LSD

0.012 µg/l

0.025 µg/l

0.050 µg/l

0

Chl.a

0.520 ± 0.002^a

0.520 ± 0.002^a

0.520 ± 0.002^a

0.520 ± 0.002^a

17582.143**

(<0.001)

0.002

Chl.b

0.135 ± 0.001^a

0.135 ± 0.001^a

0.135 ± 0.001^a

0.135 ± 0.001^a

2107.059**

(<0.001)

0.002

Total

0.655

0.655

0.655

0.655

2

Chl.a

0.680 ± 0.002^a

0.540 ± 0.003^b

0.406 ± 0.004^b

0.210 ± 0.004^d

60551.661**

(<0.001)

0.003

Chl.b

0.220 ± 0.003^a

0.270 ± 0.003^b

0.201 ± 0.003^b

0.190 ± 0.002^d

4008.571**

(<0.001)

0.004

Total

0.900

0.810

0.607

0.300

4

Chl.a

1.590 ± 0004^a

0.860 ± 0.001^b

0.450 ± 0.003^c

0.305 ± 0.004^d

44392.258**

(<0.001)

0.004

Chl.b

0.540 ± 0.001^a

0.300 ± 0.02^b

0.220 ± 0.002^c

0.210 ± 0.001^d

1703.529**

(<0.001)

0.003

Total

2.130

1.160

0.670

0.515

8

Chl.a

1.520 ± 0.004^a

1.110 ± 0.001^b

0.550 ± 0.003^c

0.330 ± 0.006^d

29707.619**

(<0.001)

0.004

Chl.b

0.640 ± 0002^a

0.560 ± 0.004^b

0.480 ± 0.004^c

0.210 ± 0.007^d

7388.571**

(<0.001)

0.002

Total

2.160

1.670

1.03

0.540

12

Chl.a

1.460 ± 0.004^a

1.180 ± 0.004^b

0.5160 ± 0.002^c

0.240 ± 0.002^d

26656.579**

(<0.001)

0.004

Chl.b

0.640 ± 0.003^a

0.416 ± 0.002^b

0.480 ± 0.003^c

0.250 ± 0.004^d

2062.500**

(<0.001)

0.003

Total

2.100

1.590

0.990

0.470

16

Chl.a

1.420 ± 0.001^a

0.850 ± 0.004^b

0.501 ± 0.00.^c

0.210 ± 0.001^d

12054.684**

(<0.001)

0.004

Chl.b

0.530 ± 0.002^a

0.580 ± 0.001^b

0.460 ± 0.004^cc

0.230 ± 0.001^d

305.294**

(<0.001)

0.003

Total

1.950

1.430

0.961

0.440