Table 4.
Proximate composition of popcorn kernels as affected by different rates of soil amendments.
| Soil amendment | Rate | Proximate constituent (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| MC | PUFA | MUFA | PROT | Fibre | Ash | Starch | Sugar | NDF | ADF | ||
| 2018/2019 cropping season | |||||||||||
| Control | 0 | 13.5 | 4.8 | 5.3 | 7.1 | 10.0 | 3.0 | 44.4 | 3.9 | 26.1 | 15.5 |
| Compost (t ha−1) | 4 | 17.7 | 4.2 | 4.7 | 8.3 | 8.6 | 3.1 | 50.3 | 2.5 | 27.8 | 17.4 |
| 8 | 19.3 | 4.7 | 5.5 | 7.7 | 8.0 | 3.6 | 49.8 | 1.8 | 26.8 | 18.5 | |
| NPK 20-7-3 (kg ha−1) | 90 | 15.0 | 5.6 | 6.2 | 7.6 | 10.0 | 3.6 | 47.6 | 3.2 | 26.3 | 16.2 |
| 180 | 15.4 | 4.4 | 5.1 | 8.1 | 10.1 | 3.7 | 45.5 | 2.6 | 28.6 | 17.3 | |
| LSD (p ≤ 0.05) | 3.3 | 0.8 | 0.8 | 1.0 | 1.4 | 0.5 | 4.6 | 2.0 | 11.6 | 4.3 | |
| 2018/2019 cropping season | |||||||||||
| Control | 0 | 13.9 | 4.8 | 4.8 | 7.2 | 8.5 | 3.0 | 43.5 | 2.1 | 23.4 | 16.7 |
| Compost (t ha−1) | 4 | 17.3 | 4.2 | 5.4 | 7.5 | 9.0 | 3.1 | 50.3 | 2.2 | 31.0 | 18.0 |
| 8 | 19.2 | 5.0 | 5.5 | 7.4 | 8.2 | 3.3 | 50.3 | 2.1 | 24.4 | 16.9 | |
| NPK 20-7-3 (kg ha−1) | 90 | 14.9 | 5.3 | 6.0 | 8.4 | 10.0 | 3.6 | 48.5 | 4.0 | 27.5 | 15.6 |
| 180 | 14.9 | 4.4 | 5.1 | 8.0 | 10.3 | 3.8 | 47.5 | 2.6 | 33.1 | 18.7 | |
| LSD (p ≤ 0.05) | 2.7 | 0.7 | 0.7 | 0.9 | 1.1 | 0.5 | 4.6 | 2.3 | 9.0 | 3.7 | |
MC = moisture content; PROT = protein; NDF = neutral detergent fibre; ADF = acid detergent fibre; PUFA = polyunsaturated fatty acids; MUFA = monounsaturated fatty acids.