Table 5 Impact of 21 years of treatment application on the levels of different biological carbon components in the soil.

3.3^e

106.7^f

5.1^e

89.9^f

2.9^e

85.9^e

4.5^f

82.8^ef

8.3^cd

319.2^cd

11.9^de

128.3^de

6.9^de

196.8^cd

10.3^de

106.9^de

10.3^bc

418.6^bc

19.9^cd

144.1^bc

7.8^bc

296.9^bc

13.1^cd

121.2^cd

12.4^a

517.7^b

27.1^a

193.6^a

11.9^a

409.3^a

19.9^a

151.1^a

14.6^a

526.2^a

35.8^a

212.8^a

13.9

424.9^a

25.6^a

161.9^a

7.6^cd

279.5^de

9.8^de

122.5^de

6.6^de

187.5^cd

9.5^ef

104.6^de

9.9^cd

389.9^cd

16.7^cd

136.4^cd

7.4^cd

256.8^cd

12.8^cd

119.6^cd

11.6^ab

481.7^a

22.7^ab

166.4^ab

9.9^ab

354.8^ab

14.9^ab

138.6^ab

12.5^a

493.9^ab

25.4^ab

187.9^ab

10.4^ab

367.3^ab

18.5^ab

146.3^ab

6.7^cd

261.4^de

9.1^de

113.5^de

5.9^de

173.9^cd

8.7^ef

101.7^de

9.5^cd

345.2^cd

14.9^cd

126.9^cd

6.6^cd

219.8^cd

11.8^cd

112.9^cd

10.8^bc

470.7^bc

21.1^bc

155.7^bc

8.2^bc

319.9^bc

13.9^bc

126.4^bc

12.6^a

515.8^a

26.3^a

197.6^a

11.2^a

401.8^a

19.6^a

148.6^ab

5.6^e

196.8^e

7.7^e

103.7^e

3.8^e

106.6^de

6.1^f

92.3^ef