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Table 4 Biological activity results of humic samples and AtonikPro (Root growth increment, plant mass increment and root division (Perimeter); averages with respective standard deviations

From: The physico-chemical properties and biostimulative activities of humic substances regenerated from lignite

 

Sample

Number

Concentration

Root growth increment (2 × 5 roots)

Mass increment (2 × 30 plants)

K[BW] – root division (Perimeter) (2 × 5 roots)

Starch content (30 plants dry mass)

Protein content (30 plants dry mass)

    

[cm]

[g]

[mm]

[wt%]

[wt%]

 

Control

1

16 ± 3

27 ± 0.01

1524 ± 5

32

11

 

AtonikPro

2

0.04 vol%

7 ± 1

29 ± 6

1180 ± 6

35

12

 

KHA

3

40 mg L–1

19 ± 2

30 ± 6

2573 ± 6

34

11

KRHA samples

10 N

4

40 mg L–1

20 ± 3

29 ± 0.4

2158 ± 8

34

12

20 N

5

40 mg L–1

20 ± 3

28 ± 5

1881 ± 4

32

12

30 N

6

40 mg L–1

20 ± 4

25 ± 2

2792 ± 6

32

12

40 N

7

40 mg L–1

18 ± 2

26 ± 0.3

2405 ± 6

29

11

50 N

8

40 mg L–1

21 ± 2

26 ± 2

2944 ± 6

32

11

65 N

9

40 mg L–1

19 ± 4

29 ± 9

2663 ± 7

34

12

5P

10

40 mg L–1

20 ± 3

31 ± 3

2064 ± 6

33

13

10P

11

40 mg L–1

19 ± 4

27 ± 0.5

2253 ± 9

33

13

20P

12

40 mg L–1

21 ± 3

30 ± 3

2477 ± 8

32

12

30P

13

40 mg L–1

21 ± 2

31 ± 5

2792 ± 7

31

11

 

KRHA10N + AtonikPro

14

40 mg L–1+ 0.04 vol%

7 ± 1

38 ± 7

1181 ± 3

32

12

 

KRHA30P + AtonikPro

15

40 mg L–1+ 0.04 vol%

7 ± 2

32 ± 2

1144 ± 3

32

11