Crop Residue (t ha⁻¹)

Humic Acid (kg ha⁻¹)

Mean

1

1.5

2

2.5

5 Mungbean

19.3

20.2

21.4

22.3

20.8 a

10 Wheat Straw

18.6

19.2

19.6

20.3

19.4 c

2.5 mungbean + 5 wheat straw

18.8

19.8

20.3

20.7

19. 9 b

Mean

18.9 d

19.7 c

20.4 b

21.1 a

Control

15.1 b

Rest of treatments

20.0 a