Table 5.
Effect of crop establishment methods and rice residue management on soil microbial count and diazotrophic count under rice–wheat cropping system (2018–2019 and 2019–20).
| Treatment | Soil microbial count (107 cfu/g soil) | Diazotrophic count (104 cfu/g soil) | ||||||
|---|---|---|---|---|---|---|---|---|
| 75 DAS | Harvest | 75 DAS | Harvest | |||||
| 2018–2019 | 2019–20 | 2018–2019 | 2019–20 | 2018–2019 | 2019–20 | 2018–2019 | 2019–20 | |
| T1 | 71.7 ± 0.87e | 82.8 ± 1.44e | 58.7 ± 2.25d | 70.1 ± 1.73d | 49.2 ± 2.31ef | 61.4 ± 3.18d | 41.9 ± 1.53ef | 47.7 ± 2.25d |
| T2 | 68.6 ± 2.02f | 80.7 ± 2.60e | 55.6 ± 2.78d | 60.6 ± 1.73e | 47.8 ± 2.18f | 58.0 ± 1.44e | 36.6 ± 1.15f | 42.0 ± 1.44e |
| T3 | 88.4 ± 2.60b | 96.6 ± 3.01abc | 74.5 ± 2.73b | 80.6 ± 3.06b | 58.0 ± 1.15b | 75.3 ± 1.44b | 50.8 ± 3.51bc | 65.1 ± 2.25b |
| T4 | 82.8 ± 1.44 c | 94.7 ± 1.45bcd | 69.8 ± 1.44c | 77.4 ± 1.73bc | 54.7 ± 1.33c | 66.9 ± 1.44c | 49.9 ± 1.15cd | 56.4 ± 5.41c |
| T5 | 81.2 ± 1.44c | 90.8 ± 1.44d | 68.2 ± 1.44c | 74.4 ± 1.73cd | 53.8 ± 2.89cd | 66.4 ± 1.44c | 45.4 ± 2.31cde | 52.6 ± 2.42cd |
| T6 | 94.1 ± 2.60a | 98.6 ± 4.37ab | 88.0 ± 1.73a | 89.3 ± 3.14a | 61.1 ± 2.31ab | 78.2 ± 1.44ab | 56.0 ± 2.30ab | 71.0 ± 1.53a |
| T7 | 94.9 ± 1.44a | 99.8 ± 1.44a | 89.2 ± 2.12a | 89.6 ± 1.90a | 62.1 ± 1.97a | 79.3 ± 1.44a | 58.2 ± 5.28a | 72.7 ± 0.15a |
| T8 | 80.9 ± 1.44c | 92.8 ± 1.44cd | 67.8 ± 2.77c | 73.3 ± 1.73cd | 51.8 ± 1.15cde | 65.3 ± 3.18c | 44.8 ± 2.00de | 52.8 ± 1.44cd |
| T9 | 80.3 ± 1.49cd | 91.4 ± 1.44d | 67.3 ± 1.49c | 72.5 ± 1.73d | 50.4 ± 1.15def | 64.8 ± 1.44c | 44.5 ± 1.15de | 51.8 ± 1.44cd |
| T10 | 77.7 ± 1.44d | 92.1 ± 1.44cd | 65.8 ± 4.74c | 72.2 ± 1.73d | 50.4 ± 2.31def | 64.1 ± 3.28cd | 42.7 ± 2.00e | 51.4 ± 1.44cd |
The values within columns with different letters differed significantly with each other. For all variables n = 3 ± standard error of mean.
T1, CTW drill sown after full residue burning; T2, CTW drill sown after removal of residues (without burning); T3, ZTW with anchored stubbles; T4, ZTW after anchored stubbles partial burning; T5, ZTW after full residue burning; T6, ZTW with Happy seeder in full residue load; T7, ZTW with Happy seeder after using chopper & spreader (full residue load); T8, CTW broadcast sown with rotavator after using chopper & spreader (full residue load); T9, CTW drill sown after using chopper, spreader & rotavator (full residue load); T10, CTW with spatial drill after using chopper & spreader (full residue load).