Table 4.
Effect of different CSA-based scenarios on alkaline phosphatase (μg p-NP per g soil per hr) during wheat crop growth stages (2 yrs’ mean).
| Scenariosa | Sowing | Crown Root Initiation | Tillering | Panicle initiation | Harvest |
|---|---|---|---|---|---|
| Surface soil (0−15 cm depth) | |||||
| 1 | 104.62Cb | 67.41D | 78.78D | 81.55D | 73.23C |
| 2 | 98.54C | 89.95A | 139.97A | 119.08B | 122.95A |
| 3 | 148.28A | 82.46B | 107.32B | 131.80A | 115.11AB |
| 4 | 122.21B | 75.89C | 94.94C | 102.95C | 108.79B |
| Sub-surface soil (15−30 cm depth) | |||||
| 1 | 97.26B | 47.91B | 74.81B | 62.12C | 71.92B |
| 2 | 153.42A | 63.19A | 110.95A | 100.58A | 98.03A |
| 3 | 115.26B | 58.56A | 116.06A | 89.49B | 94.38A |
| 4 | 100.04B | 57.62A | 78.70B | 85.89B | 89.20A |
| Main effects | P- value | |
| Scenario (S) | <0.05 | |
| Depth (D) | <0.05 | |
| Growth stage (GS) | <0.05 | |
| Year (Y) | <0.05 | |
| Interaction effects | ||
| GS × S | NS | |
| S × Y | <0.05 | |
| GS × Y | <0.05 |
Where; CSA- climate smart agriculture, Sc1: conventional rice-wheat system, Sc2: partial CSA based rice-wheat-mungbean system, Sc3: full CSA based rice-wheat-mungbean system, Sc4: full CSA based maize-wheat-mungbean system.
a
Refer Table 1 for scenario description.
b
Means followed by a similar uppercase letters within each column are not statistically different (P ≤ 0.05, Duncan’s multiple range test).