Table 3 Distribution of total organic carbon, microbial biomass carbon, potassium permanganate oxidizable carbon, Non labile organic carbon and dissolved organic carbon, under different nitrogen levels, cropping systems, and aggregate sizes.

Nitrogen effect (N)

N₁

N₂

N₃

6.41^c

7.63^b

8.77^a

6.28^c

7.04^b

7.97^a

0.350^c

0.404^b

0.486^a

0.260^c

0.321^b

0.394^a

0.85^b

0.88^b

1.01^a

1.03^c

1.13^b

1.23^a

5.56^c

6.75^b

7.67^a

5.25^c

5.91^b

6.73^a

0.78^c

1.00^b

1.31^a

0.17^c

0.28^b

0.50^a

Cropping system effect (C)

Finger-millet

Field bean

Maize

7.26^B

7.68^A

7.86^A

6.97^B

6.62^C

7.70^A

0.349^B

0.450^A

0.441^A

0.312^B

0.323^A

0.333^A

1.04^A

0.91^B

0.88^B

1.08^A

1.16^A

1.15^A

6.23^B

6.77^A

6.98^A

5.88^B

5.46^C

6.55^A

1.08^A

0.97^B

1.06^A

0.17^B

0.38^A

0.41^A

Aggregate size effect (A)

Macroaggregates

Microaggregates

8.05^a

7.15^b

7.48^a

6.70^b

0.499^a

0.327^b

0.372^a

0.279^b

1.18^a

0.70^b

1.21^a

1.05^b

6.86^a

6.44^b

6.27^a

5.65^b

1.14^a

0.92^b

0.38^a

0.25^b

Interactions

N×C

N×A

C×A

N×A×C

NS

NS

NS

NS

NS

NS

NS

NS

S

NS

S

NS

S

NS

NS

NS

NS

S

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

S

S

NS

NS

NS

NS

NS

NS