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

Table 4

Analysis of variance for normalized difference vegetation index (NDVI) values, intercepted photosynthetically active radiation (IPAR), grain yield (Mg ha⁻¹), and N content (%) at LCB, 2012.

Sources of variation		NDVI V4	NDVI V6	NDVI V8	IPAR	Grain yield (Mg ha^−1)	N content (%)
		Mean square
Seeds per hill		0.0102^**	0.0232^***	0.0275^***	0.0110^ns	0.9218^ns	0.0005^ns
Plant spacing		0.0013^ns	0.0011^ns	0.0414^***	0.0126^**	3.3182^ns	0.0135^ns
Seeds per hill spacing		0.0016^ns	0.0039^ns	0.0115^**	0.0051^ns	1.8859^ns	0.0062^ns
Seeds per hill	Spacing	Treatment means
1	0.16	0.2785	0.2905	0.4480	0.2600	2.8250	1.4600
1	0.32	0.2743	0.3213	0.4617	0.2833	2.5567	1.5433
1	0.48	0.2115	0.2655	0.4075	0.2500	2.3200	1.4950
2	0.16	0.2917	0.3613	0.6167	0.2520	3.8800	1.4967
2	0.32	0.2650	0.3235	0.4015	0.2095	1.9750	1.5150
2	0.48	0.2690	0.3250	0.4273	0.1977	3.7600	1.4767
3	0.16	0.3330	0.4235	0.6635	0.3760	4.6450	1.3750
3	0.32	0.3125	0.3540	0.5895	0.3195	2.9050	1.5350
3	0.48	0.3440	0.4477	0.4400	0.1967	2.0333	1.5400
SED		0.04	0.05	0.04	0.05	1.15	0.08
C.V (%)		16	18	11	22	47	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.