Table 2.
Yield and yield indices of maize and soybean under maize-soybean intercropping and N fertilization in the year 2022
| Treatment | Grain yield (kg ha−1) |
Biomass dry matter (kg ha−1) |
1000-grain weight (g) |
|
|---|---|---|---|---|
| Maize crop | ||||
| N0MM | 7428.05 ± 252.9 c | 10568.45 ± 831.4 c | 318.37 ± 34.7 c | |
| N0MI | 9493.40 ± 751.2 b | 12103.10 ± 494.6 b | 381.72 ± 37.2 b | |
| N1MM | 8984.15 ± 230.2 b | 11770.43 ± 597.2 bc | 358.28 ± 34.8 bc | |
| N1MI | 11705.28 ± 753.7 a | 14092.83 ± 1167.9 a | 448.81 ± 26.5 a | |
| NL | 0.004** | 0.038* | 0.005** | |
| Significance | PP | 0.001** | 0.002** | 0.002** |
| NL*PP | 0.434ns | 0.352ns | 0.411ns | |
| Soybean crop | ||||
| N0SM | 9370.40 ± 615.7 b | 11255.21 ± 766.7 b | 184.95 ± 5.6 b | |
| N0SI | 7962.81 ± 387.51 c | 9973.15 ± 600.9 c | 174.11 ± 4.6 c | |
| N1SM | 9947.87 ± 466.7 a | 12633.91 ± 422.5 a | 197.78 ± 7.5 a | |
| N1SI | 8950.42 ± 429.6 ab | 11612.76 ± 955.5 b | 189.98 ± 7.1 b | |
| NL | 0.020* | 0.014* | 0.002** | |
| Significance | PP | 0.005** | 0.001** | 0.000*** |
| NL*PP | 0.497ns | 0.573ns | 0.221ns | |
The mean values with SD (n = 4) are shown in the Table
The mean with similar lowercase letters down the column are significantly different from each other at the LSD test P ≤ 0.05 level of probability. N0: 0 kg N ha−1, N1: 225 kg N ha-1 for maize and 100 kg N ha-1 for soybean
NL Nitrogen levels, PP Planting pattern
*p ≤ 0.05
**p ≤ 0.01
***p ≤ 0.0001
ns p > 0.05