Table 2 Biological activity of irrigated meadow-chernozem soil under barley, depending on fertilization.

Bacteria on MPA, million CFU/g

41.3 ± 6.1

39.0 ± 8.1

29.8 ± 6.3

33.3 ± 6.1

31.7 ± 1.6

56.4 ± 17.1

34.3 ± 2.6

43.0 ± 5.4

Microorganisms on SAA, million CFU/g

34.5 ± 3.6

33.5 ± 5.4

28.9 ± 3.4

31.5 ± 4.0

30.4 ± 6.7

60.9 ± 26.6

31.3 ± 1.3

42.0 ± 7.3

Nitrifiers, thousand CFU/g

2.04 ± 0.6

4.19 ± 0.3

2.79 ± 0.2

2.94 ± 0.3

1.96 ± 0.3

1.8 ± 0.2

1.49 ± 0.2

1.43 ± 0.5

Fungi, thousand CFU/g

18.2 ± 1.5

23.4 ± 7.3

24.1 ± 1.7

50.0 ± 12.1

18.8 ± 3.2

28.6 ± 2.6

20.4 ± 1.5

34.0 ± 6.3

Decomposition rate of cellulose,%

30.8 ± 0.8

63.6 ± 3.3

37.8 ± 4.2

64.7 ± 5.1

27.0 ± 1.2

40.7 ± 3.1

31.8 ± 2.5

56.0 ± 0.5

Nitrification capacity, N-NO₃, mg/kg

19.0 ± 2.0

31.5 ± 2.4

24.5 ± 4.1

28.8 ± 2.8

21.8 ± 2.7

34.1 ± 3.6

21.8 ± 1.2

31.0 ± 1.2

Total biological activity, %

100

100

100

110

100

141

100

116