Table 3.
Interaction effect of nitrogen and phosphorus on photosynthetically active radiation, leaf area index, number of grains, total dry matter and grain yield for maize variety at Iburu, SGS, across two years (2015 and 2016).
| IPAR (%) |
LAI (m2 m−2) |
Grains (units m−2) |
TDM (kg ha−1) |
Grain yield (kg ha−1) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P (kg ha−1) | |||||||||||||||
| N (kg ha−1) | 0 | 13 | 26 | 0 | 13 | 26 | 0 | 13 | 26 | 0 | 13 | 26 | 0 | 13 | 26 |
| 0 | 41.9 | 46.1 | 42.3 | 0.9 | 1.1 | 1.0 | 574 | 856 | 966 | 2779 | 3591 | 3867 | 491 | 1218 | 1615 |
| 60 | 38.2 | 55.6 | 66.6 | 0.8 | 1.3 | 1.9 | 567 | 1459 | 1572 | 3482 | 7015 | 8006 | 955 | 2685 | 3259 |
| 120 | 44.6 | 63.4 | 73.3 | 1.0 | 2.0 | 2.4 | 895 | 1751 | 1849 | 5584 | 8152 | 9066 | 1449 | 3537 | 4378 |
| LSD5% N × P | 17.6 | 0.6 | 436.2 | 1265.2 | 467.6 | ||||||||||
LAI = leaf area index, IPAR = intercepted photosynthetically active radiation, TDM = total dry matter, LSD = Least significant differences.