Effect of Seed Distribution and Population on Maize (Zea mays L.) Grain Yield

Table 5

Analysis of variance for normalized difference vegetation index (NDVI) values, intercepted photosynthetically active radiation (IPAR), grain yield (Mg ha⁻¹), and N content (%) at Efaw, 2013.

Source of variation		NDVI V4	NDVI V6	NDVI V8	IPAR	Grain yield (Mg ha^−1)	N content (%)
		Mean square
Seeds per hill		0.0239^***	0.0189^***	0.0309^***	0.0537^**	9.66^***	0.0142^ns
Plant spacing		0.0004^ns	0.0002^ns	0.0584^***	0.1442^***	18.12^***	0.0048^ns
Seeds per hill spacing		0.0011^**	0.0022^***	0.0012^***	0.0021^***	5.61^***	0.0109^ns
Seeds per hill	Spacing	Treatment means
1	0.16	0.4135	0.5098	0.7057	0.5211	8.97	1.11
1	0.32	0.4179	0.5649	0.5764	0.3328	4.01	1.20
1	0.48	0.4238	0.5276	0.5163	0.3088	4.25	1.22
2	0.16	0.5062	0.6025	0.7932	0.629	7.81	1.03
2	0.32	0.4914	0.5952	0.6647	0.404	6.51	1.15
2	0.48	0.4685	0.5692	0.6474	0.3614	5.55	1.12
3	0.16	0.5493	0.6456	0.802	0.7039	7.43	1.17
3	0.32	0.5196	0.6234	0.7288	0.5603	7.17	1.09
3	0.48	0.5636	0.6643	0.6667	0.4582	7.02	1.09
SED		0.01	0.01	0.01	0.1	0.52	0.06
C.V (%)		3.6	2.5	1.6	26.2	9.1	6.6

Significant at 0.01 and 0.05 levels of probability, respectively; ns: not significant; SED: standard error of the difference between two equally replicated means; C.V: coefficient of variation.