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. 2022 Nov 14;8(11):e11587. doi: 10.1016/j.heliyon.2022.e11587

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.