Treatments

Fe

Zn

Cu

Mn

___________mg∙kg⁻¹___________

Control (No fertilizers)

38.2e*

25.07d*

6.0e*

65.8e*

N & K fertilizers

42.5d

28.30c

8.4d

72.5d

N, P & K fertilizers

57.3a

40.57a

10.4c

93.7a

Compost

47.0c

34.13b

12.0bc

79.2c

N, P & K + S @ 20 kg∙ha⁻¹

57.3a

40.87a

10.6c

94.6a

Compost + S @ 10 kg∙ha⁻¹

51.1bc

35.73b

13.1b

86.6b

Compost + S @ 20 kg∙ha⁻¹

58.1a

42.03a

16.3a

95.5a

Compost + S @ 30 kg∙ha⁻¹

52.7b

39.03a

15.3a

90.2ab

LSD P ≤ 0.05

4.05

3.043

1.80

6.16