Treatment

Urease

MBC

Mineral N

Moisture content

(µg NH 4 + -N/h)

(µg C)

(µg N)

(%)

Guiera senegalensis

Dry season

Non-rhizosphere

1.0a*

7.3a

6.7a

0.5a

Bulk

2.4**b

25.6c

12.1c

1.0b

Rhizosphere

4.7c

38.1de

14.6cd

2.6c

Wet season

Non-rhizosphere

3.1bc

12.3b

8.5b

5.1d

Bulk

8.0d

34.0d

15.2d

6.5e

Rhizosphere

8.7e

46.1f

15.5d

11.5f

Piliostigma reticulatum

Dry season

Non-rhizosphere

1.0a

6.5a

8.1a

0.5a

Bulksoil

2.2b

27.0c

15.1b

1.5b

Rhizosphere

6.2cd

45.1e

15.8b

2.4c

Wet season

Non-rhizosphere

5.3c

16.5b

9.1a

7.8d

Bulksoil

9.7e

37.8d

16.7bc

9.1e

Rhizosphere

9.8e

49.1f

17.3c

11.5f