Table 1.
Yield and yield indices of maize and soybean under maize-soybean intercropping and N fertilization in the year 2021
| Treatment | Grain yield (kg ha−1) |
Biomass dry matter (kg ha−1) |
1000-grain weight (g) |
|
|---|---|---|---|---|
| Maize crop | ||||
| N0MM | 7273.03 ± 342.6 c | 10368.45 ± 536.2 b | 305.53 ± 30.3 c | |
| N0MI | 9103.42 ± 639.1 b | 11477.90 ± 691.1 b | 356.98 ± 33.7 b | |
| N1MM | 7959.14 ± 104.9 c | 11220.40 ± 362.1 b | 344.59 ± 32.1 bc | |
| N1MI | 10105.26 ± 497.1 a | 13893.12 ± 803.8 a | 420.37 ± 22.8 a | |
| Significance | NL | 0.029* | 0.031* | 0.011** |
| PP | 0.000*** | 0.003*** | 0.003** | |
| NL*PP | 0.608ns | 0.100ns | 0.397ns | |
| Soybean crop | ||||
| N0SM | 8945.39 ± 379.5 ab | 11844.20 ± 438.7 b | 182.67 ± 8.1 b | |
| N0SI | 8012.84 ± 530.9 c | 9672.75 ± 489.5 c | 167.78 ± 5.5 c | |
| N1SM | 9722.86 ± 519.2 a | 11983.91 ± 225.5 a | 192.47 ± 3.8 a | |
| N1SI | 8885.42 ± 77.06 b | 10762.76 ± 876.7 ab | 180.96 ± 7.9 b | |
| Significance | NL | 0.041* | 0.032* | 0.006** |
| PP | 0.000*** | 0.003** | 0.000*** | |
| NL*PP | 0.742ns | 0.646ns | 0.432ns | |
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