Table 3.
Yield and yield components of popcorn in response to different rates of organic and inorganic soil amendments.
| Soil amendment | Rate | 2017/2018 cropping season | 2018/2019 cropping season | ||||||
|---|---|---|---|---|---|---|---|---|---|
| GY (t ha−1) | Kernel size (mm) | TBM (g plant−1) | HI | GY (t ha−1) | Kernel size (mm) | TBM (g plant−1) | HI | ||
| Control | 0 | 3.82 | 2.74 | 103.18 | 0.65 | 3.02 | 2.63 | 129.79 | 0.41 |
| Compost (t ha−1) | 4 | 6.03 | 2.83 | 105.23 | 0.93 | 3.11 | 2.83 | 139.54 | 0.48 |
| 8 | 7.18 | 2.75 | 125.58 | 0.94 | 3.10 | 2.92 | 168.33 | 0.74 | |
| NPK 20-7-3 (kg ha−1) | 90 | 6.79 | 2.83 | 108.71 | 1.10 | 5.45 | 2.91 | 99.19 | 1.59 |
| 180 | 6.26 | 2.75 | 111.66 | 0.89 | 5.74 | 2.93 | 164.22 | 1.00 | |
| LSD (p ≤ 0.05) | 2.41 | 0.39 | 40.72 | 0.44 | 1.83 | 0.38 | 75.94 | 0.89 | |
GY = grain yield; TBM = total biomass; HI = harvest index.